Ediciones

Revista y Edición

AHEAD OF PRINT

Volumen 30 (2022): Edición 2 (December 2022)

Volumen 30 (2022): Edición 1 (June 2022)

Volumen 29 (2021): Edición 2 (December 2021)

Volumen 29 (2021): Edición 1 (June 2021)

Volumen 28 (2020): Edición 2 (December 2020)

Volumen 28 (2020): Edición 1 (June 2020)

Volumen 27 (2019): Edición 2 (December 2019)

Volumen 27 (2019): Edición 1 (June 2019)

Volumen 26 (2018): Edición 2 (December 2018)

Volumen 26 (2018): Edición 1 (June 2018)

Volumen 25 (2017): Edición 2 (December 2017)

Volumen 25 (2017): Edición 1 (June 2017)

Volumen 24 (2016): Edición 2 (December 2016)

Volumen 24 (2016): Edición 1 (June 2016)

Volumen 23 (2015): Edición 2 (December 2015)

Volumen 23 (2015): Edición 1 (June 2015)

Volumen 22 (2014): Edición 2 (December 2014)

Volumen 22 (2014): Edición 1 (June 2014)

Volumen 21 (2013): Edición 2 (December 2013)

Volumen 21 (2013): Edición 1 (June 2013)

Detalles de la revista
Formato
Revista
eISSN
2353-3978
Publicado por primera vez
30 Jul 2013
Periodo de publicación
2 veces al año
Idiomas
Inglés

Buscar

Volumen 21 (2013): Edición 1 (June 2013)

Detalles de la revista
Formato
Revista
eISSN
2353-3978
Publicado por primera vez
30 Jul 2013
Periodo de publicación
2 veces al año
Idiomas
Inglés

Buscar

15 Artículos
Acceso abierto

The Occurrence of the Viruses in Tulip Crops in Poland

Publicado en línea: 30 Jul 2013
Páginas: 5 - 9

Resumen

Abstract

The viruses infecting tulips have a big influence on the yield and the quality of bulbs and forced flowers. Commercial bulb production is based on clonal propagation, which leads to the accumulation of viruses. Among 22 viruses occurring in tulips, the most common and the most dangerous are Tulip breaking virus, TBV; Tobacco necrosis virus, TNV; Lily symptomless virus, LSV; Cucumber mosaic virus, CMV and Tobacco rattle virus, TRV. The aim of the research was to check which viruses occur most often on Polish tulip plantations. The research was done on two tulip (Tulipa L.) cultivars ‘Strong Gold’ and ‘Leen van der Mark’ grown at 3 farms situated in different parts of Poland (Warsaw Region, Pomerania and Podlasie) during 2006-2007, and then at 2 farms located in Warsaw Region during 2008-2011. Five of the most important viruses infecting tulips (TBV, TNV, LSV, CMV, and TRV) were detected by double antibody sandwich enzyme-linked immunosorbent assay (DAS-ELISA) in leaves and in bulbs during the period 2006-2010. In the last year of the research two different strains of TRV were detected (TRV-J and TRV-F) and Tulip virus X (TVX) as well. Search for viruses showed that most often TBV virus was detected both in the leaves and the bulbs regardless of the year and plantations. Yellow flowering cultivar ‘Strong Gold’ was infected by viruses more often than in bi-coloured (with red) ‘Leen van der Mark’, because of the difficulties with effective roguing of infected plants due to inconspicuous symptoms of virus infections on yellow coloured flowers. Other viruses were detected sporadically, however increasing occurrence of LSV and TRV was noticed from year to year. In 2011, TVX virus was detected in a few plants of ‘Strong Gold’ and it was the first case of detection of this virus in tulip in Poland.

Keywords

  • Cucumber mosaic virus
  • DAS-ELISA
  • Lily symptomless virus
  • negative selection
  • Tobacco necrosis virus
  • Tobacco rattle virus
  • Tulipa L.
  • Tulip breaking virus
  • Tulip virus X
  • virus disease
Acceso abierto

Detection of Narcissus Latent Virus Isolates Using One-Step Rt-Pcr Assay

Publicado en línea: 30 Jul 2013
Páginas: 11 - 14

Resumen

Abstract

A one-step RT-PCR procedure was developed for specific detection of Narcissus latent virus (NLV) isolates. Following alignment of RNA sequences of three NLV isolates, the conserved sequence fragments were identified in viral polyprotein gene and 3’UTR region. Based on those fragments, a forward NLs1 and two reverse: NLa1 and NLSCPR2 primers were designed. Primer pairs NLs1-NLa1 and NLs1- NLSCPR2 proved to be effective in amplification of a 669 bp and 1295 bp products, respectively. Sequence analysis of amplified products confirmed their specificity.

Palabras clave

  • NLV
  • virus identification
  • RT-PCR
  • DAS-ELISA
  • narcissus cultivars
Acceso abierto

Effect of Nanosilver on Physiological Performance of Pelargonium Plants Exposed to Dark Storage

Publicado en línea: 30 Jul 2013
Páginas: 15 - 20

Resumen

Abstract

This investigation was conducted to evaluate the effects of post-harvest application of silver nanoparticles (N-Ag) and dark storage on plastid pigments, petal abscission, lipid peroxidation and activities of ascorbate peroxidase (APX) and guaiacol peroxidase (POD) in pelargonium cultivars ‘Blue Wonder’ and ‘Anthony’. N-Ag was applied as foliar spray in concentrations 0, 20, 40, 60 and 80 mg·cm-3 and then the plants were stored for 5 days in a growth chamber in darkness at temperature 20±2 °C and relative humidity 65%. The results revealed that after dark storage the petal abscission of cv. ‘Blue Wonder’ increased up to 40% but significantly decreased in plants treated with 60 mg·cm-3 of N-Ag. Cultivar ‘Anthony’ showed lesser petal abscission than ‘Blue Wonder’, namely 25% in control and 4% after treatment with 60 mg·cm-3 N-Ag. In both cultivars, treatment with N-Ag resulted in higher contents of leaf chlorophylls and carotenoids in comparison to untreated control. In response to treatments with 20-60 mg·cm-3 N-Ag, the activity of APX and POD was higher at the end of 5 days storage period than in the control plants, which coincided with improved post-harvest performance of both pelargonium cultivars. The enhancement of enzyme activities indicated possible beneficial effect of the applied treatment on alleviation of dark storage-induced oxidative stress. Also, in both cultivars, MDA content decreased significantly with the increase of N-Ag concentration up to 60 mg·cm-3 and then a rapid increase at 80 mg·cm-3 followed. It is concluded that treatment with silver nanoparticles is effective for preventing dark storage-induced petal abscission of pelargonium.

Keywords

  • Pelargonium zonale
  • nanosilver
  • leaf senescence
  • lipid peroxidation
Acceso abierto

Gibberellic Acid Effect on Growth and Flowering of Ajania Pacifica /Nakai/ Bremer et Humphries

Publicado en línea: 30 Jul 2013
Páginas: 21 - 27

Resumen

Abstract

The research addressed the effect of gibberellic acid (GA3) on growth and flowering of Ajania pacifica /Nakai/ Bremer et Humphries ‘Bea’. The vegetative growth lasted for 8 weeks in glasshouse, under natural long day and from August 15 - under natural short day. The plants were divided into four groups: 1 - the plants sprayed with distilled water (control combination); 2, 3 and 4 - the plants sprayed with GA3 ones, twice and thrice, respectively, starting from the 5th week of growth, and then in the 6th and 7th week, successively. Each of the group was divided into two subgroups: the first one treated with GA3 at concentration of 250 mg·dm-3 and the second with 500 mg·dm-3. It was observed that double spraying with GA3 accelerated the buds development of Ajania pacifica, thus shortened the cultivation time by about two days. Treatment with GA3 at concentration 500 mg·dm-3 stimulated the elongation of shoots more than treatment with GA3 at 250 mg·dm-3. The plants sprayed twice were longer than the control and then those sprayed one time. However, elongation of shoots was not remarkable; corymbs were shorter, narrower, and contained lesser number of inflorescences. The present study indicates the specificity of the response of Ajania pacifica to GA3 treatment, which appears to be different from other ornamental species.

Palabras clave

  • Ajania pacifica
  • elongation growth
  • GA3
  • flowering
Acceso abierto

Growth and Development of Potted Rhododendron Cultivars ‘Catawbiense Boursault’ and ‘Old Port’ in Response to Regulated Deficit Irrigation

Publicado en línea: 30 Jul 2013
Páginas: 29 - 37

Resumen

Abstract

The aim of this study was to analyse the effect of regulated deficit irrigation (RDI) on growth and development of potted rhododendron ‘Catawbiense Boursault’ and ‘Old Port’ plants and to evaluate the usefulness of this technique for saving water in nursery production and promoting flowering. Plants were grown in 1.9 litre plastic containers in unheated greenhouse and were subjected to six irrigation treatments lasting for 14 weeks from June to mid-September. A drip irrigation system with one 2 dm3·h-1 emitter per container was used. Six treatments of irrigation were applied: T1) 1 ETp (evapotranspiration) (control, well watered plants); T2) 0.75 ETp (moderate deficit irrigation); T3) 0.5 ETp (strong deficit irrigation) during the entire period of the experiment and the others three were: T4) 1 ETp for 5 weeks followed by 0.5 ETp for 4 weeks and 1 ETp for 5 weeks (strong deficit irrigation in phase II); T5) 1 ETp for 5 weeks followed by 0.25 ETp for 4 weeks and 1 ETp for 5 weeks (very strong deficit irrigation in phase II) and T6) 0.5 ETp for 5 weeks followed by 1 ETp for 4 weeks and 0.5 ETp for 5 weeks (strong deficit irrigation in phases I and III and well watered plants in phase II). The results showed that exposing plants to moderate water deficit (0.75 ETp) for 14 weeks had the best effect on quality of Rhododendron ‘Old Port’ plants. In this cultivar the application of very strong water deficit (0.25 ETp) for 4 weeks during floral buds initiation improved significantly floral bud set. Reduction of water supply by 50% during 14 weeks of Rhododendron ‘Catawbiense Boursault’ cultivation resulted in both the enhanced plant quality and increased number of floral buds set. Rhododendrons has adapted to reduced water supplies through stomatal control. At the end of the experiment, chlorophyll fluorescence parameter Fv/Fm (quantum efficiency of photosystem II) did not indicate damage to photosynthetic apparatus and relative chlorophyll content in leaves of plants subjected to all irrigation regimes did not differ significantly between each other.

Keywords

  • water deficit
  • rhododendron
  • greenhouse potted cultivation
  • ornamental plant quality index
  • regulated deficit irrigation
Acceso abierto

A Review of the in Vitro Propagation of Bauhinia Spp

Publicado en línea: 30 Jul 2013
Páginas: 39 - 45

Resumen

Abstract

Bauhinia species (including B. acuminata, B. variegata, B. purpurea, B. monandra, B. galpinii, B. blakeana and B. acuminata) are popular ornamental plants, usually woody ornamentals or herbaceous lianas, with attractive flowers typical of the Leguminosae of arid, temperate, sub-tropical and tropical zones. Bauhinia species also serve as fodder and many have multiple medicinal and biological properties. There is an interest in commerce and amongst collectors to clonally propagate species from this genus. This review highlights protocols that currently exist for the in vitro culture of Bauhinia species as a means to clonally propagate material.

Keywords

  • Bauhinia
  • liana
  • woody ornamental
Acceso abierto

Branching System of the Mexican Hawthorn “Tejocote” (Crataegus Spp.)

Publicado en línea: 30 Jul 2013
Páginas: 47 - 59

Resumen

Abstract

The architecture of the tejocote (pronounciation: tehocote) - a Mexican fruit trees is described. There is a great morphological diversity among the tejocote clones growing in Germplasm Bank of the Autonomic University of Chapingo, Mexico. The common character of all hawthorns in this bank is that the inflorescence axis dies after shedding the reproductive parts (flowers or fruits) but remains on the tree, and the growth continues from the bud situated below the dead part. The growth and ramification habit were described as long shoots showing marked apical dominance and as the complex of shoots showing week apical dominance. The non-pruned trees of tejocote clones used as fruit trees form strong natural crown. The architecture of it is similar to the “Troll’s model” of Hallé and Oldeman (1970). Metamorphosis and reiteration are relatively frequent. The inflorescence structure was described, as well as the types of thorns in clones, which have thorns. Tejocote hawthorn may probably be an interesting fruit tree for countries with warm climate and a long dry period. It is also well adapted to shallow calcareous soils.

Palabras clave

  • edible hawthorns. canopy architecture
  • ramification habit
  • inflorescence structure
  • morphological diversity
Acceso abierto

Evaluation of the Susceptibility of Several Plum (Prunus Domestica L.) Cultivars to Plum Pox Virus (Ppv) Infection in the Field. Sharka-Like Symptoms Observed on 'Jojo' Fruit are Not Related to PPV

Publicado en línea: 30 Jul 2013
Páginas: 61 - 64

Resumen

Abstract

Susceptibility of plum cultivars: 'Katinka', 'Jubileum', 'Diana', 'Valjevka', 'Żółta Afaska', 'Elena', 'Jojo', 'President', 'Vision', and 'Węgierka Zwykła' (Pozegaca type, included as reference, highly susceptible cultivar) to aphid-vectored Plum pox virus (strain D), was evaluated. The trees were grown for 7-8 years in the field characterized with high infection pressure. 'Katinka' and 'President' showed susceptibility even higher than 'Węgierka Zwykła'. 'Vision' and 'Valjevka' showed relatively low susceptibility with less than 30% of trees becoming infected. All 'Jojo' trees remained free from ELISA-detectable amounts of PPV, although a high percentage of the fruit of this cultivar showed sharka-like symptoms on stones and fruit flesh. The reason for that phenomenon is not known.

Palabras clave

  • plum
  • sharka
  • fruit tree protection
  • hypersensitivity
Acceso abierto

The Control of Codling Moth (Cydia Pomonella L.) Population Using Mating Disruption Method

Publicado en línea: 30 Jul 2013
Páginas: 65 - 70

Resumen

Abstract

The series of experiments on codling moth (Cydia pomonella L.) control using mating disruption method were conducted in three experimental orchards during 2006-2010 growing seasons. The efficacy of two commercial pheromone preparations: Ecodian CP and Isomate CTT, in comparison to pesticides Calypso 480 SC and Appeal 04 PA, was evaluated on the base of percentage of damaged fruits, number of caterpillars collected during their migration for overwintering in bands of corrugated cardboard placed on tree trunk and number of moths caught in pheromone traps. Two thousands dispensers of Ecodian CP were used twice a season (at 6-week interval) on the area of 1 ha of the orchard. Five hundred of Isomate CTT dispensers were applied once a season on 1 ha of the orchard. In all the experiments, application of mating disruption method significantly reduced the level of apple damage; the control efficacy (calculated according to Abbott’s formula) ranged from 54.2% to 95.8%. The efficacy of chemical control ranged from 58.5% to 93.0%. The lower efficacy of mating disruption method was noticed in orchards with high codling moth population. The treatments also affected the number of caterpillars caught in bands of corrugated cardboard placed on tree trunk. In experiments where the codling moth was not controlled, the number of caterpillars per a band varied from 0.2 to 11.9 whereas in these where the pest was controlled chemically or by mating disruption method, their number varied from 1.4 to 2.8 specimens.

Palabras clave

  • codling moth
  • control
  • mating disruption
  • apple
Acceso abierto

The Characteristics of Fruits Morphology, Chemical Composition and Colour Changes in Must During Maceration of Three Grapevine Cultivars

Publicado en línea: 30 Jul 2013
Páginas: 71 - 78

Resumen

Abstract

The study compares morphology of clusters and fruits, the chemical composition and changes of pulp in the process of maceration of grape cultivars ‘Mavrud’, ‘Pinot Noir’ and ‘Merlot’. The cultivar ‘Mavrud’ had biggest clusters and fruits. Its fruits were less firm but had the highest acidity while the fruits of the ‘Pinot Noir’ had the highest content of soluble solids and dry matter and the greatest firmness but the lowest acidity and content of nitrites and nitrates. The fruits of the ‘Merlot’ cultivar had the highest content of L-ascorbic acid, nitrites and nitrates. The pulp colour was largely affected by the maceration temperature. During a warm maceration, the process of pulp darkening accelerated and the red colour saturation increased, whereas cold maceration resulted in the blue colour saturation.

Palabras clave

  • chemical composition
  • colour L*a*b*
  • reflectance
  • Vitis vinifera
Acceso abierto

Estimation of Interstock and Intermediate Stock Usefulness for Summer Pear Cvs. Budded on Two Rootstocks

Publicado en línea: 30 Jul 2013
Páginas: 79 - 82

Resumen

Abstract

In order to increase the profitability of pear production, a greater density of weak growing trees per area unit should be planted. In Poland, the most frequently used pear dwarfing rootstocks are quince clones. The main disadvantage of them is a physiological incompatibility with some cultivars. The aim of this study was to evaluate the effect of the rootstock, interstock, and intermediate stock on growth and productivity of two summer pear cultivars, which are not compatible with the quince rootstock. Twoyear- old pear trees of ‘Radana’ and ‘Clapp’s Favourite’ cvs of different compositions were planted in the spring 2006. The following combinations were evaluated: ‘Radana’ and ‘Clapp’s Favourite’ on Caucasian pear seedlings, ‘Radana’ and ‘Clapp’s Favourite’ on quince SI with an intermediate stem piece of ’Doyenne du Comice’ and ‘Radana’ on Caucasian pear with ‘Pyrodwarf’ interstock. Up to the 6th year after planting, trees of ‘Radana’ grafted on Caucasian pear seedlings and on quince with intermediate stock yielded better than ‘Radana’ trees composed of Caucasian pear seedling and ‘Pyrodwarf’ interstock. ‘Clapp’s Favourite’ in all combinations had significantly heavier fruits. The highest crop efficiency index had ‘Radana’ on quince with ’Doyenne du Comice’ intermediate stock.

Palabras clave

  • pear
  • quince
  • interstock
  • intermediate stock
  • ‘Pyrodwarf’
Acceso abierto

Assessment of Genetic Diversity in Cultivated Tomato (Solanum Lycopersicum L.) Genotypes Using Rapd Primers

Publicado en línea: 30 Jul 2013
Páginas: 83 - 89

Resumen

Abstract

Random Amplified Polymorphic DNA (RAPD) analysis was carried out on 19 Azerbaijan tomato genotypes, both cultivars and local populations. A total of 26 amplified products were revealed by 6 primers. The genetic similarity among evaluated genotypes ranged from 0.188 to 1.000. The lowest similarity was observed between cultivars ‘Azerbaijan’ and ‘Shakar’ (0.188), while the highest between ‘Elnur’ and ‘Garatag’ (1.000). The Unweighted Pair Group Method with Arithmetic Mean (UPGMA) cluster analysis based on Jaccard’s similarity coefficient divided genotypes into four main groups. The first group was the largest and consisted of 12 genotypes, while the fourth group was the smallest consisted of 1 genotype only. The most polymorphic primer was OPB-18 that presented a genetic diversity index of 0.823, while the least informative was primer OPG-17 with an index of 0.349. The average genetic diversity calculated from RAPD data was 0.665.

Keywords

  • Azerbaijan
  • breeding
  • polymorphism
  • RAPD
  • similarity
  • tomato
Acceso abierto

Genetic Variability, Inheritance and Correlation for Mineral Contents in Cabbage (Brassica Oleracea Var. Capitata L.)

Publicado en línea: 30 Jul 2013
Páginas: 91 - 97

Resumen

Abstract

Brassica vegetables are important sources of dietary minerals. However, information on the inheritance and correlation for content of mineral elements such as iron, zinc, copper, manganese, potassium, and calcium in cabbage, which is essential if the quality of this vegetable is to be improved through breeding, is not available. Therefore, the experiment was set up with seventy-one cabbage genotypes including cultivars, germplasm and F1 hybrids grown in field. Mineral composition of the genotypes tested differed highly significantly indicating the presence of adequate amount of variability. A high heritability (>80%) accompanied by high genetic advance as percentage of mean (>40%) for uptake and accumulation of Fe, Zn, Cu, Mn and Ca indicates the predominance of additive gene, which could be improved by hybridization followed by selection breeding approach. Nevertheless, heterosis breeding would be an imperative in increasing the K content in cabbage heads as indicated by non-additive gene action for K accumulation having high heritability (>80%) and low genetic advance as percentage of mean (<30%). Moreover, both additive and non-additive genes were responsible for individual head weight. A positive correlation for Fe, Zn and Mn contents with other minerals will help in simultaneous selection of mineral elements. Nevertheless, major yield contributing ‘head weight’ was negatively correlated with minerals content and emphasized the selection of smaller head size to maintain the higher minerals content in tissues of cabbage heads. Hence, assessing the heritability, inheritance and correlation for minerals would be useful in the developing mineral-rich and productive genotypes.

Keywords

  • Brassica
  • cabbage
  • correlation
  • heritability
  • macronutrients
  • micronutrients
Acceso abierto

Nutritional Evaluation of Five African Indigenous Vegetables

Publicado en línea: 30 Jul 2013
Páginas: 99 - 106

Resumen

Abstract

The promotion and consumption of indigenous vegetables could help mitigate food insecurity and alleviate malnutrition in developing countries. In this respect, 17 accessions (candidate breeding lines that have not yet officially been released) of five African indigenous vegetables: amaranth (Amaranthus cruentus), nightshade (Solanum scabrum), African eggplant (Solanum aethiopicum), jute mallow (Corchorus olitorius) and okra (Abelmoschus callei), previously selected for their superior agronomic and horticultural traits, were evaluated in Cameroon for minerals (Ca, Mg, K, P, Zn and Fe), proteins, and carotenoids content. Nutrient content differed significantly (P<0.001) between cultivars. Amaranth (especially line AM-NKgn) had the highest Ca, Mg, and Zn content in comparison to other genotypes studied. Nightshade had the highest K and Fe content. The highest K and Fe levels were found in nightshades BG24 and SS52, respectively. Nightshade had the highest level of protein, especially line BFS1. The highest amount of carotenoids was identified in the eggplant variety Oforiwa. The study revealed that these vegetables are important sources of some vital nutrients. Increased production and consumption of these nutrient-rich vegetables will help reduce the nutrition-related disorders in Africa.

Palabras clave

  • African indigenous vegetables
  • variety evaluation
  • nutrient-rich vegetables
  • food and nutritional security
Acceso abierto

Comparison of Yield and Quality of Red Beet Roots Cultivated Using Conventional, Integrated and Organic Method

Publicado en línea: 30 Jul 2013
Páginas: 107 - 114

Resumen

Abstract

The experiment on different means of cultivation of red beet cv. ‘Regulski Cylinder’ was conducted in the years 2006-2009, using conventional, integrated, and organic methods. The greatest impact on total and commercial yield, the average root weight, dry weight and chemical constituents’ content in the roots had the season. In the years 2006 and 2008, the highest total and marketable yields of beet roots were obtained by organic method, but in 2009 these parameters were the lowest in organically produced plants. Total yield was correlated with mean root weight. In the years 2006 and 2008, betanine content was the lowest in organically produced roots while in the year 2009 it was the highest. The low yield of marketable roots and the low nitrates’ content were the only two parameters, which distinguished organically produced red beet roots throughout the years of experiment.

Keywords

  • red beet
  • yielding
  • roots quality
  • organic cultivation
  • integrated cultivation
  • conventional cultivation
15 Artículos
Acceso abierto

The Occurrence of the Viruses in Tulip Crops in Poland

Publicado en línea: 30 Jul 2013
Páginas: 5 - 9

Resumen

Abstract

The viruses infecting tulips have a big influence on the yield and the quality of bulbs and forced flowers. Commercial bulb production is based on clonal propagation, which leads to the accumulation of viruses. Among 22 viruses occurring in tulips, the most common and the most dangerous are Tulip breaking virus, TBV; Tobacco necrosis virus, TNV; Lily symptomless virus, LSV; Cucumber mosaic virus, CMV and Tobacco rattle virus, TRV. The aim of the research was to check which viruses occur most often on Polish tulip plantations. The research was done on two tulip (Tulipa L.) cultivars ‘Strong Gold’ and ‘Leen van der Mark’ grown at 3 farms situated in different parts of Poland (Warsaw Region, Pomerania and Podlasie) during 2006-2007, and then at 2 farms located in Warsaw Region during 2008-2011. Five of the most important viruses infecting tulips (TBV, TNV, LSV, CMV, and TRV) were detected by double antibody sandwich enzyme-linked immunosorbent assay (DAS-ELISA) in leaves and in bulbs during the period 2006-2010. In the last year of the research two different strains of TRV were detected (TRV-J and TRV-F) and Tulip virus X (TVX) as well. Search for viruses showed that most often TBV virus was detected both in the leaves and the bulbs regardless of the year and plantations. Yellow flowering cultivar ‘Strong Gold’ was infected by viruses more often than in bi-coloured (with red) ‘Leen van der Mark’, because of the difficulties with effective roguing of infected plants due to inconspicuous symptoms of virus infections on yellow coloured flowers. Other viruses were detected sporadically, however increasing occurrence of LSV and TRV was noticed from year to year. In 2011, TVX virus was detected in a few plants of ‘Strong Gold’ and it was the first case of detection of this virus in tulip in Poland.

Keywords

  • Cucumber mosaic virus
  • DAS-ELISA
  • Lily symptomless virus
  • negative selection
  • Tobacco necrosis virus
  • Tobacco rattle virus
  • Tulipa L.
  • Tulip breaking virus
  • Tulip virus X
  • virus disease
Acceso abierto

Detection of Narcissus Latent Virus Isolates Using One-Step Rt-Pcr Assay

Publicado en línea: 30 Jul 2013
Páginas: 11 - 14

Resumen

Abstract

A one-step RT-PCR procedure was developed for specific detection of Narcissus latent virus (NLV) isolates. Following alignment of RNA sequences of three NLV isolates, the conserved sequence fragments were identified in viral polyprotein gene and 3’UTR region. Based on those fragments, a forward NLs1 and two reverse: NLa1 and NLSCPR2 primers were designed. Primer pairs NLs1-NLa1 and NLs1- NLSCPR2 proved to be effective in amplification of a 669 bp and 1295 bp products, respectively. Sequence analysis of amplified products confirmed their specificity.

Palabras clave

  • NLV
  • virus identification
  • RT-PCR
  • DAS-ELISA
  • narcissus cultivars
Acceso abierto

Effect of Nanosilver on Physiological Performance of Pelargonium Plants Exposed to Dark Storage

Publicado en línea: 30 Jul 2013
Páginas: 15 - 20

Resumen

Abstract

This investigation was conducted to evaluate the effects of post-harvest application of silver nanoparticles (N-Ag) and dark storage on plastid pigments, petal abscission, lipid peroxidation and activities of ascorbate peroxidase (APX) and guaiacol peroxidase (POD) in pelargonium cultivars ‘Blue Wonder’ and ‘Anthony’. N-Ag was applied as foliar spray in concentrations 0, 20, 40, 60 and 80 mg·cm-3 and then the plants were stored for 5 days in a growth chamber in darkness at temperature 20±2 °C and relative humidity 65%. The results revealed that after dark storage the petal abscission of cv. ‘Blue Wonder’ increased up to 40% but significantly decreased in plants treated with 60 mg·cm-3 of N-Ag. Cultivar ‘Anthony’ showed lesser petal abscission than ‘Blue Wonder’, namely 25% in control and 4% after treatment with 60 mg·cm-3 N-Ag. In both cultivars, treatment with N-Ag resulted in higher contents of leaf chlorophylls and carotenoids in comparison to untreated control. In response to treatments with 20-60 mg·cm-3 N-Ag, the activity of APX and POD was higher at the end of 5 days storage period than in the control plants, which coincided with improved post-harvest performance of both pelargonium cultivars. The enhancement of enzyme activities indicated possible beneficial effect of the applied treatment on alleviation of dark storage-induced oxidative stress. Also, in both cultivars, MDA content decreased significantly with the increase of N-Ag concentration up to 60 mg·cm-3 and then a rapid increase at 80 mg·cm-3 followed. It is concluded that treatment with silver nanoparticles is effective for preventing dark storage-induced petal abscission of pelargonium.

Keywords

  • Pelargonium zonale
  • nanosilver
  • leaf senescence
  • lipid peroxidation
Acceso abierto

Gibberellic Acid Effect on Growth and Flowering of Ajania Pacifica /Nakai/ Bremer et Humphries

Publicado en línea: 30 Jul 2013
Páginas: 21 - 27

Resumen

Abstract

The research addressed the effect of gibberellic acid (GA3) on growth and flowering of Ajania pacifica /Nakai/ Bremer et Humphries ‘Bea’. The vegetative growth lasted for 8 weeks in glasshouse, under natural long day and from August 15 - under natural short day. The plants were divided into four groups: 1 - the plants sprayed with distilled water (control combination); 2, 3 and 4 - the plants sprayed with GA3 ones, twice and thrice, respectively, starting from the 5th week of growth, and then in the 6th and 7th week, successively. Each of the group was divided into two subgroups: the first one treated with GA3 at concentration of 250 mg·dm-3 and the second with 500 mg·dm-3. It was observed that double spraying with GA3 accelerated the buds development of Ajania pacifica, thus shortened the cultivation time by about two days. Treatment with GA3 at concentration 500 mg·dm-3 stimulated the elongation of shoots more than treatment with GA3 at 250 mg·dm-3. The plants sprayed twice were longer than the control and then those sprayed one time. However, elongation of shoots was not remarkable; corymbs were shorter, narrower, and contained lesser number of inflorescences. The present study indicates the specificity of the response of Ajania pacifica to GA3 treatment, which appears to be different from other ornamental species.

Palabras clave

  • Ajania pacifica
  • elongation growth
  • GA3
  • flowering
Acceso abierto

Growth and Development of Potted Rhododendron Cultivars ‘Catawbiense Boursault’ and ‘Old Port’ in Response to Regulated Deficit Irrigation

Publicado en línea: 30 Jul 2013
Páginas: 29 - 37

Resumen

Abstract

The aim of this study was to analyse the effect of regulated deficit irrigation (RDI) on growth and development of potted rhododendron ‘Catawbiense Boursault’ and ‘Old Port’ plants and to evaluate the usefulness of this technique for saving water in nursery production and promoting flowering. Plants were grown in 1.9 litre plastic containers in unheated greenhouse and were subjected to six irrigation treatments lasting for 14 weeks from June to mid-September. A drip irrigation system with one 2 dm3·h-1 emitter per container was used. Six treatments of irrigation were applied: T1) 1 ETp (evapotranspiration) (control, well watered plants); T2) 0.75 ETp (moderate deficit irrigation); T3) 0.5 ETp (strong deficit irrigation) during the entire period of the experiment and the others three were: T4) 1 ETp for 5 weeks followed by 0.5 ETp for 4 weeks and 1 ETp for 5 weeks (strong deficit irrigation in phase II); T5) 1 ETp for 5 weeks followed by 0.25 ETp for 4 weeks and 1 ETp for 5 weeks (very strong deficit irrigation in phase II) and T6) 0.5 ETp for 5 weeks followed by 1 ETp for 4 weeks and 0.5 ETp for 5 weeks (strong deficit irrigation in phases I and III and well watered plants in phase II). The results showed that exposing plants to moderate water deficit (0.75 ETp) for 14 weeks had the best effect on quality of Rhododendron ‘Old Port’ plants. In this cultivar the application of very strong water deficit (0.25 ETp) for 4 weeks during floral buds initiation improved significantly floral bud set. Reduction of water supply by 50% during 14 weeks of Rhododendron ‘Catawbiense Boursault’ cultivation resulted in both the enhanced plant quality and increased number of floral buds set. Rhododendrons has adapted to reduced water supplies through stomatal control. At the end of the experiment, chlorophyll fluorescence parameter Fv/Fm (quantum efficiency of photosystem II) did not indicate damage to photosynthetic apparatus and relative chlorophyll content in leaves of plants subjected to all irrigation regimes did not differ significantly between each other.

Keywords

  • water deficit
  • rhododendron
  • greenhouse potted cultivation
  • ornamental plant quality index
  • regulated deficit irrigation
Acceso abierto

A Review of the in Vitro Propagation of Bauhinia Spp

Publicado en línea: 30 Jul 2013
Páginas: 39 - 45

Resumen

Abstract

Bauhinia species (including B. acuminata, B. variegata, B. purpurea, B. monandra, B. galpinii, B. blakeana and B. acuminata) are popular ornamental plants, usually woody ornamentals or herbaceous lianas, with attractive flowers typical of the Leguminosae of arid, temperate, sub-tropical and tropical zones. Bauhinia species also serve as fodder and many have multiple medicinal and biological properties. There is an interest in commerce and amongst collectors to clonally propagate species from this genus. This review highlights protocols that currently exist for the in vitro culture of Bauhinia species as a means to clonally propagate material.

Keywords

  • Bauhinia
  • liana
  • woody ornamental
Acceso abierto

Branching System of the Mexican Hawthorn “Tejocote” (Crataegus Spp.)

Publicado en línea: 30 Jul 2013
Páginas: 47 - 59

Resumen

Abstract

The architecture of the tejocote (pronounciation: tehocote) - a Mexican fruit trees is described. There is a great morphological diversity among the tejocote clones growing in Germplasm Bank of the Autonomic University of Chapingo, Mexico. The common character of all hawthorns in this bank is that the inflorescence axis dies after shedding the reproductive parts (flowers or fruits) but remains on the tree, and the growth continues from the bud situated below the dead part. The growth and ramification habit were described as long shoots showing marked apical dominance and as the complex of shoots showing week apical dominance. The non-pruned trees of tejocote clones used as fruit trees form strong natural crown. The architecture of it is similar to the “Troll’s model” of Hallé and Oldeman (1970). Metamorphosis and reiteration are relatively frequent. The inflorescence structure was described, as well as the types of thorns in clones, which have thorns. Tejocote hawthorn may probably be an interesting fruit tree for countries with warm climate and a long dry period. It is also well adapted to shallow calcareous soils.

Palabras clave

  • edible hawthorns. canopy architecture
  • ramification habit
  • inflorescence structure
  • morphological diversity
Acceso abierto

Evaluation of the Susceptibility of Several Plum (Prunus Domestica L.) Cultivars to Plum Pox Virus (Ppv) Infection in the Field. Sharka-Like Symptoms Observed on 'Jojo' Fruit are Not Related to PPV

Publicado en línea: 30 Jul 2013
Páginas: 61 - 64

Resumen

Abstract

Susceptibility of plum cultivars: 'Katinka', 'Jubileum', 'Diana', 'Valjevka', 'Żółta Afaska', 'Elena', 'Jojo', 'President', 'Vision', and 'Węgierka Zwykła' (Pozegaca type, included as reference, highly susceptible cultivar) to aphid-vectored Plum pox virus (strain D), was evaluated. The trees were grown for 7-8 years in the field characterized with high infection pressure. 'Katinka' and 'President' showed susceptibility even higher than 'Węgierka Zwykła'. 'Vision' and 'Valjevka' showed relatively low susceptibility with less than 30% of trees becoming infected. All 'Jojo' trees remained free from ELISA-detectable amounts of PPV, although a high percentage of the fruit of this cultivar showed sharka-like symptoms on stones and fruit flesh. The reason for that phenomenon is not known.

Palabras clave

  • plum
  • sharka
  • fruit tree protection
  • hypersensitivity
Acceso abierto

The Control of Codling Moth (Cydia Pomonella L.) Population Using Mating Disruption Method

Publicado en línea: 30 Jul 2013
Páginas: 65 - 70

Resumen

Abstract

The series of experiments on codling moth (Cydia pomonella L.) control using mating disruption method were conducted in three experimental orchards during 2006-2010 growing seasons. The efficacy of two commercial pheromone preparations: Ecodian CP and Isomate CTT, in comparison to pesticides Calypso 480 SC and Appeal 04 PA, was evaluated on the base of percentage of damaged fruits, number of caterpillars collected during their migration for overwintering in bands of corrugated cardboard placed on tree trunk and number of moths caught in pheromone traps. Two thousands dispensers of Ecodian CP were used twice a season (at 6-week interval) on the area of 1 ha of the orchard. Five hundred of Isomate CTT dispensers were applied once a season on 1 ha of the orchard. In all the experiments, application of mating disruption method significantly reduced the level of apple damage; the control efficacy (calculated according to Abbott’s formula) ranged from 54.2% to 95.8%. The efficacy of chemical control ranged from 58.5% to 93.0%. The lower efficacy of mating disruption method was noticed in orchards with high codling moth population. The treatments also affected the number of caterpillars caught in bands of corrugated cardboard placed on tree trunk. In experiments where the codling moth was not controlled, the number of caterpillars per a band varied from 0.2 to 11.9 whereas in these where the pest was controlled chemically or by mating disruption method, their number varied from 1.4 to 2.8 specimens.

Palabras clave

  • codling moth
  • control
  • mating disruption
  • apple
Acceso abierto

The Characteristics of Fruits Morphology, Chemical Composition and Colour Changes in Must During Maceration of Three Grapevine Cultivars

Publicado en línea: 30 Jul 2013
Páginas: 71 - 78

Resumen

Abstract

The study compares morphology of clusters and fruits, the chemical composition and changes of pulp in the process of maceration of grape cultivars ‘Mavrud’, ‘Pinot Noir’ and ‘Merlot’. The cultivar ‘Mavrud’ had biggest clusters and fruits. Its fruits were less firm but had the highest acidity while the fruits of the ‘Pinot Noir’ had the highest content of soluble solids and dry matter and the greatest firmness but the lowest acidity and content of nitrites and nitrates. The fruits of the ‘Merlot’ cultivar had the highest content of L-ascorbic acid, nitrites and nitrates. The pulp colour was largely affected by the maceration temperature. During a warm maceration, the process of pulp darkening accelerated and the red colour saturation increased, whereas cold maceration resulted in the blue colour saturation.

Palabras clave

  • chemical composition
  • colour L*a*b*
  • reflectance
  • Vitis vinifera
Acceso abierto

Estimation of Interstock and Intermediate Stock Usefulness for Summer Pear Cvs. Budded on Two Rootstocks

Publicado en línea: 30 Jul 2013
Páginas: 79 - 82

Resumen

Abstract

In order to increase the profitability of pear production, a greater density of weak growing trees per area unit should be planted. In Poland, the most frequently used pear dwarfing rootstocks are quince clones. The main disadvantage of them is a physiological incompatibility with some cultivars. The aim of this study was to evaluate the effect of the rootstock, interstock, and intermediate stock on growth and productivity of two summer pear cultivars, which are not compatible with the quince rootstock. Twoyear- old pear trees of ‘Radana’ and ‘Clapp’s Favourite’ cvs of different compositions were planted in the spring 2006. The following combinations were evaluated: ‘Radana’ and ‘Clapp’s Favourite’ on Caucasian pear seedlings, ‘Radana’ and ‘Clapp’s Favourite’ on quince SI with an intermediate stem piece of ’Doyenne du Comice’ and ‘Radana’ on Caucasian pear with ‘Pyrodwarf’ interstock. Up to the 6th year after planting, trees of ‘Radana’ grafted on Caucasian pear seedlings and on quince with intermediate stock yielded better than ‘Radana’ trees composed of Caucasian pear seedling and ‘Pyrodwarf’ interstock. ‘Clapp’s Favourite’ in all combinations had significantly heavier fruits. The highest crop efficiency index had ‘Radana’ on quince with ’Doyenne du Comice’ intermediate stock.

Palabras clave

  • pear
  • quince
  • interstock
  • intermediate stock
  • ‘Pyrodwarf’
Acceso abierto

Assessment of Genetic Diversity in Cultivated Tomato (Solanum Lycopersicum L.) Genotypes Using Rapd Primers

Publicado en línea: 30 Jul 2013
Páginas: 83 - 89

Resumen

Abstract

Random Amplified Polymorphic DNA (RAPD) analysis was carried out on 19 Azerbaijan tomato genotypes, both cultivars and local populations. A total of 26 amplified products were revealed by 6 primers. The genetic similarity among evaluated genotypes ranged from 0.188 to 1.000. The lowest similarity was observed between cultivars ‘Azerbaijan’ and ‘Shakar’ (0.188), while the highest between ‘Elnur’ and ‘Garatag’ (1.000). The Unweighted Pair Group Method with Arithmetic Mean (UPGMA) cluster analysis based on Jaccard’s similarity coefficient divided genotypes into four main groups. The first group was the largest and consisted of 12 genotypes, while the fourth group was the smallest consisted of 1 genotype only. The most polymorphic primer was OPB-18 that presented a genetic diversity index of 0.823, while the least informative was primer OPG-17 with an index of 0.349. The average genetic diversity calculated from RAPD data was 0.665.

Keywords

  • Azerbaijan
  • breeding
  • polymorphism
  • RAPD
  • similarity
  • tomato
Acceso abierto

Genetic Variability, Inheritance and Correlation for Mineral Contents in Cabbage (Brassica Oleracea Var. Capitata L.)

Publicado en línea: 30 Jul 2013
Páginas: 91 - 97

Resumen

Abstract

Brassica vegetables are important sources of dietary minerals. However, information on the inheritance and correlation for content of mineral elements such as iron, zinc, copper, manganese, potassium, and calcium in cabbage, which is essential if the quality of this vegetable is to be improved through breeding, is not available. Therefore, the experiment was set up with seventy-one cabbage genotypes including cultivars, germplasm and F1 hybrids grown in field. Mineral composition of the genotypes tested differed highly significantly indicating the presence of adequate amount of variability. A high heritability (>80%) accompanied by high genetic advance as percentage of mean (>40%) for uptake and accumulation of Fe, Zn, Cu, Mn and Ca indicates the predominance of additive gene, which could be improved by hybridization followed by selection breeding approach. Nevertheless, heterosis breeding would be an imperative in increasing the K content in cabbage heads as indicated by non-additive gene action for K accumulation having high heritability (>80%) and low genetic advance as percentage of mean (<30%). Moreover, both additive and non-additive genes were responsible for individual head weight. A positive correlation for Fe, Zn and Mn contents with other minerals will help in simultaneous selection of mineral elements. Nevertheless, major yield contributing ‘head weight’ was negatively correlated with minerals content and emphasized the selection of smaller head size to maintain the higher minerals content in tissues of cabbage heads. Hence, assessing the heritability, inheritance and correlation for minerals would be useful in the developing mineral-rich and productive genotypes.

Keywords

  • Brassica
  • cabbage
  • correlation
  • heritability
  • macronutrients
  • micronutrients
Acceso abierto

Nutritional Evaluation of Five African Indigenous Vegetables

Publicado en línea: 30 Jul 2013
Páginas: 99 - 106

Resumen

Abstract

The promotion and consumption of indigenous vegetables could help mitigate food insecurity and alleviate malnutrition in developing countries. In this respect, 17 accessions (candidate breeding lines that have not yet officially been released) of five African indigenous vegetables: amaranth (Amaranthus cruentus), nightshade (Solanum scabrum), African eggplant (Solanum aethiopicum), jute mallow (Corchorus olitorius) and okra (Abelmoschus callei), previously selected for their superior agronomic and horticultural traits, were evaluated in Cameroon for minerals (Ca, Mg, K, P, Zn and Fe), proteins, and carotenoids content. Nutrient content differed significantly (P<0.001) between cultivars. Amaranth (especially line AM-NKgn) had the highest Ca, Mg, and Zn content in comparison to other genotypes studied. Nightshade had the highest K and Fe content. The highest K and Fe levels were found in nightshades BG24 and SS52, respectively. Nightshade had the highest level of protein, especially line BFS1. The highest amount of carotenoids was identified in the eggplant variety Oforiwa. The study revealed that these vegetables are important sources of some vital nutrients. Increased production and consumption of these nutrient-rich vegetables will help reduce the nutrition-related disorders in Africa.

Palabras clave

  • African indigenous vegetables
  • variety evaluation
  • nutrient-rich vegetables
  • food and nutritional security
Acceso abierto

Comparison of Yield and Quality of Red Beet Roots Cultivated Using Conventional, Integrated and Organic Method

Publicado en línea: 30 Jul 2013
Páginas: 107 - 114

Resumen

Abstract

The experiment on different means of cultivation of red beet cv. ‘Regulski Cylinder’ was conducted in the years 2006-2009, using conventional, integrated, and organic methods. The greatest impact on total and commercial yield, the average root weight, dry weight and chemical constituents’ content in the roots had the season. In the years 2006 and 2008, the highest total and marketable yields of beet roots were obtained by organic method, but in 2009 these parameters were the lowest in organically produced plants. Total yield was correlated with mean root weight. In the years 2006 and 2008, betanine content was the lowest in organically produced roots while in the year 2009 it was the highest. The low yield of marketable roots and the low nitrates’ content were the only two parameters, which distinguished organically produced red beet roots throughout the years of experiment.

Keywords

  • red beet
  • yielding
  • roots quality
  • organic cultivation
  • integrated cultivation
  • conventional cultivation

Planifique su conferencia remota con Sciendo