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Phenotypic characteristics of black apricot Prunus × dasycarpa cultivar ‘Shlor-Tsiran’ in Armenia


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Figure 1.

‘Shlor-Tsiran’ trees at the orchard of the Echmiadzin Scientific Center of Agriculture.
‘Shlor-Tsiran’ trees at the orchard of the Echmiadzin Scientific Center of Agriculture.

Figure 2.

‘Shlor-Tsiran’: (A) flowers; (B) petals, flower buds; (C) shoot fragments with hypanthium on elongated peduncles; (D) fruits and (E) stone (scale bar = 10 mm).
‘Shlor-Tsiran’: (A) flowers; (B) petals, flower buds; (C) shoot fragments with hypanthium on elongated peduncles; (D) fruits and (E) stone (scale bar = 10 mm).

Figure 3.

(a) Fertile (pink) and sterile (transparent) pollen grain of Prunus × dasycarpa var. ‘Shlor-Tsiran’. (b) Pollen germination.
(a) Fertile (pink) and sterile (transparent) pollen grain of Prunus × dasycarpa var. ‘Shlor-Tsiran’. (b) Pollen germination.

Phenotypic characteristics of ‘Shlor-Tsiran’.

Growth characteristics of black apricot cv. ‘Shlor-Tsiran’ 10-year-old trees
Crown shape Cup shaped
Tree average height 2.5 m
Degree of branching Strong
Leaf and shoot characteristics
Length of shoots/average of 10 40 cm
Number of shoots 150
Number of skeletal branches 5
Number of leaves/shoot 15
Leaf surface area 26 cm2
Leaf length 6 cm
Leaf width 3 cm
Ratio of leaf length to width 2.7
Leaf green colour intensity Middle
The shape of the leaf base Rounded
The shape of the leaf apex Suddenly shortly acuminate
Leaf apex length 7 mm
Leaf blade: profile in cross section. Edge cut Moderately concave
Leaf blade: undulation of margin edge roughness Week
Petiole length 2.75 cm
Leaf-to-petiole length ratio Large
Petiole thickness Thin
Number of glands 1–3
Average weight of 10 leaves 5.71 g
Changes in vegetative buds. Timing of defoliation and duration of vegetation with average data
Date of beginning of swelling of vegetative buds and separation of scales 20 April
Date of beginning of vegetative shoots emergence (1–5 cm) 25 April
Period of vigorous vegetative growth 5 May–10 June
Period of organisation of apical buds 01 June–20 June
Leaf fall (start/mass leaf fall/end) 10 October/20 October/29 October
Vegetation duration (days) 225
Changes in generative (fruit) buds/2019–2021
Date of buds swelling 14 March
Date of buds opening 18 March
Flowering (start/mass flowering/ end) 25 March/04 April/11 April
Date of beginning of fruit formation 25 May
Date of beginning of fruit ripening 24 June
Morphological characteristics of fruit
Size Medium
Shape in ventral view Ovate
Form of the fruit shape in lateral view Oblong
Height 42.0 mm
Ventral width Medium
Lateral width Medium
Ratio of lateral width/ventral width 5.0
Ratio of height/ventral width Medium
Fruit: symmetry in ventral view Clearly asymmetric
Fruit: suture Slightly sunken
Fruit: depth of stalk cavity Medium
Shape of the apex Flat
Fruit: shape of tip (except mucron) Weakly depressed
Fruit: surface Smooth
Fruit: pubescence Present
Fruit: hue of over colour Red
Fruit: relative area of colour Large
Fruit: pattern of over colour Solid flush
Fruit: intensity of over colour Medium
Fruit: colour of flesh Medium orange
Start of fruit ripening Middle term ripening
Glow of the skin No shining
Fruit: texture of flesh Fibrous
Adherence of stone to flesh Absent or very weak
Kernel: shape in lateral view Ovate
Kernel: bitterness Medium
Average fruit weight 40 g
Average fruit weight with stone 92.9/30.97 g
Average weight of kernels 5.01/1.67 g
Average weight of fruit without seed 293 g
Average content of zoles in fruit 0.5 g
Volume of juice 3 mL

Comparative characteristics of Prunus armeniaca, P. cerasifera and Prunus × dasycarpa cv. ‘Shlor-Tsiran’.

Character Prunus armeniaca Prunus cerasifera Prunus × dasycarpa cv. ‘Shlor-Tsiran’
Leaf size (cm) 6–12 × 5–11 (2)3–6 × (1)2–4 (6)6.5 × (4)4.5
Leaf shape Ovate-rounded or broadly ovate, almost cordate at base Oblong-elliptic or ovate-elliptic, cuneate to sub-rounded at base Ovate to elliptic-ovate, broadly cuneate to rounded at base
Leaf apex Suddenly shortly acuminate Acute Suddenly shortly acuminate
Leaf margin Finely crenate or obtusely serrate Finely serrated or finely blunt-serrated, rarely twice serrated Irregularly densely finely crenate
Leaf surface Adaxially glabrous green, abaxially matte, rarely slightly pubescent in the vein axils Adaxially dark green, glabrous, abaxially pale green, pubescent on mid-vein Adaxially dark green, glabrous, abaxially pubescent along veins
Petioles length (cm) 3–3.5 0.6–1.2 (2.3) 2.5–2.8
Flowers number Usually solitary, rarely by 2 Solitary or by 2–4 Usually solitary
Sepal length (mm) 4–6 2–4 3.5–4.0
Sepals shape Ovate to ovate oblong, acute to obtuse, glandular along the margin Ovate, oblong-ovate, obtuse, glandular along the margin Elliptic, obtuse, glandular along the margin
Flower peduncle length (mm) Nearly absent to very short (1–3) (4) 10–16 (22) 7–12
Flower colour White or pale rose, with pink veins or pink in bud White, sometimes pinkish at the end of flowering White or pale rose
Corolla diameter (mm) 25–45 20–25 15–20
Hypanthium length 4–6 2–4 6
Petals shape Elliptic or obovate, broadly elliptic Ovate, spatulate, wavy along the edge Elliptic or obovate
Petals size (mm) 8–12 × 6–7 7–15 × 5–10 8–9 × 6
Number of stamens 27–36 20–30 25–27(35)
Stamen length 6–10 3–6 5–6
Style length 11–15 6–7 10–12
Fruit colour Orange, often tinged with red Yellow, rose, red, dark violet or blackish violet Dark violet or blackish violet
Fruit shape Oval or sub-globose Globose or sub-globose Globose, slightly compressed from the sides
Fruit surface Velvety pubescent or glabrous Glabrous Velvety pubescent
Fruit stalk length (mm) Almost absent or 1–2.5 Up to 22 Up to 12
Stone shape Ellipsoid to sub-globose, flattened, smooth, separated from the pulp Ovoid or ellipsoidal-ovoid, wrinkled or smooth, usually not separated from the pulp Ovoid, pitted, some wrinkled, not separated from the pulp

Justification of the economic efficiency of the black apricot cv. ‘Shlor-Tsiran’ in about 10-year-old trees with an average data of 3 years/SD = 63.88.

Yield per tree 20 kg/tree
Yield per hectare 13.3 trees · ha−1
Production cost 225 AMD = 0.5829 $ · kg−1
Fruit market value 400 AMD = 1.0363 $ · kg−1
Income 5320.000 AMD · ha−1 = 13.7831 $ · ha−1
Profit 2320.000 AMD · ha−1 = 6.0107 $ · ha−1
Profitability level 77.3%

Fruit characteristics for the description of apricot Prunus armeniaca L. cultivars by UPOV (2016).

No. Character Unit Min Max Mean
1. Fruit size code 3 9 6.31
2. Shape from the belly code 1 6 2.48
3. Shape from the back code 2 5 3.02
4. Height mm 31.11 49.72 39.61
5. Width at the belly code 3 5 3.55
6. Width at the back code 3 3 3.36
7. Back width and fruit height ratio code 5 7 5.57
8. Belly and back width ratio code 5 7 5.28
9. Symmetry at the back code 1 3 2.46
10. Abdominal length code 1 4 2.47
11. Depth of the funnel code 3 7 5.17
12. Apex shape code 1 3 1.36
13. Presence of apex code 3 3 3
14. Planeness of the skin code 1 1 1
15. Softness of the skin code 9 9 9
16. Shine of the skin code 1 3 2.3
17. Colour of the skin code 1 3 1.88
18. Prevalence of subcutaneous points code 1 5 2.58
19. Colour of subcutaneous spots code 1 4 3.03
20. Degree of colour intensity of subcutaneous points code 3 5 4.6
21. Colour of the fruit flesh code 1 6 3.4
22. Structure of the fruit flesh code 1 3 2.5
23. Degree of separation of the kernel from the pulp code 1 3 1.36
24. Shape of the cornice is from the belly code 3 3 3
25. Presence of bitterness of the kernel code 1 1 1.05
26. Beginning of fruit ripening code 1 9 4.85
27. Fruit weight g 14.19 50.92 30.57
28. Kernel weight g 1.01 3.36 1.9
29. Kernel volume mm3 1.50 4.20 2.58
30. Fruit volume mm3 13.50 52.10 32.59
31. Ratio of kernel to fruit weight (%) 4.22 12.05 6.46

Leaf characteristics for the description of apricot Prunus armeniaca L. cultivars by UPOV (2016).

No. Character Unit Min Max Mean
1. Leaf length cm 6.17 8.92 7.46
2. Leaf width cm 3.52 7.9 6.35
3. Ratio of leaf length to width code 3 7 3.68
4. Shape of the leaf base code 2 4 3.08
5. Green colour intensity of the leaf surface code 3 7 5.75
6. Leaf apex angle code 1 3 2.39
7. Leaf apex length mm 1.66 7 4.25
8. Cut edge of leaves code 2 4 3.19
9. Unevenness of the leaf edge code 3 5 4.26
10. Petiole length cm 2.5 5.17 3.73
11. Leaf-to-petiole length ratio code 5 7 5.73
12. Petiole thickness mm 3 7 5
13. Number of glands in the petiole number 1 2 1.25
14. Average weight of 10 leaves g 4.31 12.65 7.66

Phytochemical analysis of black apricot cv. ‘Shlor-Tsiran’.

Tartaric acid (mg · mL−1) 0.001
Malic acid (mg · mL−1) 0.01
Citric acid (mg · mL−1) 0.011
Succinic acid (mg · mL−1) 0.005
Oxalic acid (mg · mL−1) not detected
Fructose (% w/v) 1.935
Glucose (% w/v) 3.368
Sucrose (% w/v) not detected
Vitamin C (% w/v) 0.0182
Antioxidant activity corresponding to the concentration of biologically active substances with reductive potential in relation to quercetin (mg/g) 4.615

Prunus × dasycarpa cv. ‘Shlor-Tsiran’, Prunus armeniaca and P. ceratifera pollen size, fertility and viability parameters.

Pollen parameters Prunus × dasycarpa cv. ‘Shlor-Tsiran’ Prunus armeniaca Prunus cerasifera
Size (μm) 42.5 ± 1.1 50.4 ± 0.61 45.3 ± 0.93
Fertile (%) 38.0 ± 0.79 92.9 ± 0.79 92.9 ± 0.39
Sterile (%) 58.9 ± 1.17 6.2 ± 0.43 4.5 ± 0.26
Semi-sterile (%) 3.9 ± 0.69 0.9 ± 0.15 2.7 ± 0.24
Viability (%) 3.4 ± 0.55 80.5 ± 0.5 86.5 ± 8.5
eISSN:
2083-5965
Język:
Angielski
Częstotliwość wydawania:
2 razy w roku
Dziedziny czasopisma:
Life Sciences, Plant Science, Zoology, Ecology, other