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Evaluation of the possibility of obtaining viable seeds from the cross-breeding Hippeastrum × chmielii Chm. with selected cultivars of Hippeastrum hybridum Hort.

Przemysław Marciniak

Przemysław Marciniak

Section of Ornamental Plants, Institute of Horticultural Sciences, Warsaw University of Life SciencesWarsaw, Poland
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Marciniak, Przemysław
, 
Agata Jędrzejuk

Agata Jędrzejuk

Section of Ornamental Plants, Institute of Horticultural Sciences, Warsaw University of Life SciencesWarsaw, Poland
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Jędrzejuk, Agata
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Dariusz Sochacki

Dariusz Sochacki

Section of Ornamental Plants, Institute of Horticultural Sciences, Warsaw University of Life SciencesWarsaw, Poland
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Sochacki, Dariusz
  
05 juin 2021
Evaluation of the possibility of obtaining viable seeds from the cross-breeding Hippeastrum × chmielii Chm. with selected cultivars of Hippeastrum hybridum Hort.'s Cover Image
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Catégorie d'article: Original Article
Publié en ligne: 05 juin 2021
Pages: 185 - 194
Reçu: 24 nov. 2020
Accepté: 19 avr. 2021
DOI: https://doi.org/10.2478/fhort-2021-0014
Mots clés
© 2021 Przemysław Marciniak et al., published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Figure 1

Clones of H. × chmielii – No. 6 (left) and No. 18 (right).
Clones of H. × chmielii – No. 6 (left) and No. 18 (right).

Figure 2

Cultivars of H. hybridum tested – ‘Gervase’, ‘Rio Negro’ and ‘Royal Velvet’ (from left to right).
Cultivars of H. hybridum tested – ‘Gervase’, ‘Rio Negro’ and ‘Royal Velvet’ (from left to right).

Figure 3

The receptive stigma of Hippeastrum × chmielii stained by alizarine red – clone No. 6 (A) and clone No. 18 (B).
The receptive stigma of Hippeastrum × chmielii stained by alizarine red – clone No. 6 (A) and clone No. 18 (B).

Figure 4

The receptive ovule of Hippeastrum × chmielii stained by alizarine red – clone No. 6 (A) and clone No. 18 (B).
The receptive ovule of Hippeastrum × chmielii stained by alizarine red – clone No. 6 (A) and clone No. 18 (B).

Figure 5

Pollen grains stained by acetocarmine – H. hybridum ‘Gervase’ (A), H. hybridum ‘Rio Negro’ (B) and H. hybridum ‘Royal Velvet’ (C). White arrows show viable pollen grains; black arrows show non-stainable/non-viable grains.
Pollen grains stained by acetocarmine – H. hybridum ‘Gervase’ (A), H. hybridum ‘Rio Negro’ (B) and H. hybridum ‘Royal Velvet’ (C). White arrows show viable pollen grains; black arrows show non-stainable/non-viable grains.

Figure 6

Sprouting pollen tubes on the germination medium – H. hybridum ‘Rio Negro’ (A) and H. hybridum ‘Royal Velvet’ (B).
Sprouting pollen tubes on the germination medium – H. hybridum ‘Rio Negro’ (A) and H. hybridum ‘Royal Velvet’ (B).

Figure 7

Germinating pollen grains of H. hybridum ‘Rio Negro’ on the stigma (A) and pollen tubes of ‘Rio Negro’ penetrated the ovule (B).
Germinating pollen grains of H. hybridum ‘Rio Negro’ on the stigma (A) and pollen tubes of ‘Rio Negro’ penetrated the ovule (B).

The number of seeds obtained from individual crossings of H_ × chmielii with three cultivars_

Crossing Number of flowers Number of collected seeds from one flower (min – max) Average number of collected seeds per flower ± SD Total number of seeds
H. × chmielii 18 × ‘Gervase’ 10 31–76 57.7 ± 15.53 577
H. × chmielii 18 × ‘Royal Velvet’ 15 24–86 59.1 ± 17.99 828
H. × chmielii 18 × ‘Rio Negro’ 17 22–68 43.6 ± 17.68 305
H. × chmielii 6 × ‘Gervase’ 10 25–94 48.6 ± 22.17 340
H. × chmielii 6 × ‘Royal Velvet’ 15 53–83 70.9 ± 9.44 993
H. × chmielii 6 × ‘Rio Negro’ 10 0 0 0
Total number of seeds from all crossings 3,043

Percentage of viable/stainable pollen grains of cultivars H_ hybridum – ‘Gervase’; ‘Royal Velvet’; ‘Rio Negro’_

Cultivars Total number of pollen grain ± SD Number of viable pollen grains ± SD Percentage of viable pollen grains (%) ± SD
H. hybridum ‘Gervase’ 195 ± 4.08 162 ± 0.82 83.0 ± 0.06 b*
H. hybridum ‘Royal Velvet’ 177 ± 1.63 145 ± 3.30 82.7 ± 5.51 b
H. hybridum ‘Rio Negro’ 285 ± 4.08 210 ± 1.63 66.4 ± 9.21 a

Percentage of germinated seeds of H_ × chmielii pollinated by pollen of three cultivars depending on the germination method_

Crossing Germination on Petri dishes (%)* Germination in water in the jars (%)*
H. × chmielii 18 × ‘Gervase’ 55.0 ± 5.61 a** 71.2 ± 6.77 b
H. × chmielii 18 × ‘Royal Velvet’ 67.2 ± 9.54 a 70.6 ± 8.66 a
H. × chmielii 18 × ‘Rio Negro’ 48.3 ± 6.01 a 58.4 ± 5.80 a
H. × chmielii 6 × ‘Gervase’ 72.7 ± 12.02 a 73.8 ± 10.88 a
H. × chmielii 6 × ‘Royal Velvet’ 75.4 ± 6.28 a 77.9 ± 4.62 a
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Sciences de la vie, Sciences végétales, Zoologie, Écologie, Sciences de la vie, autres
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