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Adaptivity of sweet pepper varieties cultivated in the Astrakhan region
- Authors: Myagkova E.G.1
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Affiliations:
- Precaspian agrarian federal scientific center of the Russian academy of sciences
- Issue: Vol 16, No 1 (2021)
- Pages: 30-41
- Section: Crop production
- URL: https://agrojournal.rudn.ru/agronomy/article/view/19638
- DOI: https://doi.org/10.22363/2312-797X-2021-16-1-30-41
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Abstract
In agricultural production, it is important not only to achieve a high productivity, but also to ensure its stability. To obtain high and stable yields, it is necessary to have information on the adaptability of crops varieties and hybrids to a specific cultivation zone. The article analyzes the results of the field experiment on the variety testing of sweet pepper. To assess the variety for adaptability to natural conditions and cultivation technology in the Astrakhan region, such parameters as plasticity and stability of the variety were used. To characterize the ecological plasticity, the regression coefficient bi was determined, which characterizes response of the cultivar to changes in cultivation conditions. To characterize the parameter of stability, the standard deviation from the regression line σ2d. was calculated. All calculations were carried out according to S.A. Eberhart, W.A. Russell as presented by V.Z. Pakudin.
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Table 1. ANOVA results
Source | SS | df | MS | F | P value | Fcritical |
Between groups | 673.09 | 9 | 74.79 | 4.56 | 0.002 | 2.39 |
Within groups | 327.73 | 20 | 16.39 | |||
Total | 1000.83 | 29 |
Table 2. Sweet pepper productivity in 2017—2019
Cultivar | Yield, t/ha | ||||
2017 | 2018 | 2019 | ∑Yi | Average Yi | |
Podarok Moldovy (control) | 42.8 | 49.3 | 37.7 | 129.8 | 43.3 |
Belozerka | 46 | 50.2 | 44.9 | 141.1 | 47.0 |
Bogatyr | 52.9 | 50.5 | 54.3 | 157.7 | 52.6 |
Vityaz | 42.5 | 39.9 | 46.4 | 128.8 | 42.9 |
Korenovsky | 56.3 | 48.7 | 54.3 | 159.3 | 53.1 |
Lolita | 54.1 | 47.4 | 53.6 | 155.1 | 51.7 |
Zorka | 40.5 | 49.6 | 44.7 | 134.8 | 44.9 |
Galatea | 38.1 | 36.8 | 45.2 | 120.1 | 40.0 |
Dar Kaspiya | 52.3 | 50.4 | 57.7 | 160.4 | 53.5 |
Titan | 49.3 | 40.3 | 42 | 131.6 | 43.9 |
∑Yj | 474.8 | 463.1 | 480.8 | ||
Average Yj | 47.48 | 46.31 | 48.08 | ||
Table 3. Coefficients of linear regression for sweet pepper productivity
Cultivar | bi |
Podarok Moldovy (control) | –6.417 |
Belozerka | –3.076 |
Bogatyr | 2.1338 |
Vityaz | 3.4734 |
Korenovsky | 3.6209 |
Lolita | 3.8078 |
Zorka | –3.456 |
Galatea | 4.2472 |
Dar Kaspiya | 3.7813 |
Titanium | 1.8839 |
Table 4. Theoretical yield of sweet pepper cultivars, t/ha
Cultivar | Average Yij |
Podarok Moldovy (control) | 43.27 |
Belozerka | 47.03 |
Bogatyr | 52.57 |
Vityaz | 42.93 |
Korenovsky | 53.10 |
Lolita | 51.70 |
Zorka | 44.93 |
Galatea | 40.03 |
Dar Kaspiya | 53.47 |
Titanium | 43.87 |
Table 5. Deviations of actual yield from theoretical, t/ha, and stability of sweet pepper cultivars
Cultivar | 2017 | 2018 | 2019 | Stability | |
Podarok Moldovy (control) | 0.75 | –0.26 | –0.50 | 0.88 | 0.88 |
Belozerka | –0.45 | 0.15 | 0.30 | 0.31 | 0.31 |
Bogatyr | –0.07 | 0.02 | 0.05 | 0.01 | 0.01 |
Vityaz | –1.09 | 0.37 | 0.72 | 1.85 | 1.85 |
Korenovsky | 2.51 | –0.85 | –1.66 | 9.79 | 9.79 |
Lolita | 1.68 | –0.57 | –1.11 | 4.36 | 4.36 |
Zorka | –3.78 | 1.28 | 2.50 | 22.14 | 22.14 |
Galatea | –2.74 | 0.93 | 1.81 | 11.65 | 11.65 |
Dar Kaspiya | –1.89 | 0.64 | 1.25 | 5.51 | 5.51 |
Titanium | 5.08 | –1.72 | –3.35 | 39.98 | 39.98 |
Table 6. Adaptability parameters of sweet pepper cultivars, 2017—2019
Cultivar | bi | |
Podarok Moldovy (control) | –6.417 | 0.88 |
Belozerka | –3.076 | 0.31 |
Bogatyr | 2.1338 | 0.01 |
Vityaz | 3.4734 | 1.85 |
Korenovsky | 3.6209 | 9.79 |
Lolita | 3.8078 | 4.36 |
Zorka | –3.456 | 22.14 |
Galatea | 4.2472 | 11.65 |
Dar Kaspiya | 3.7813 | 5.51 |
Titanium | 1.8839 | 39.98 |
About the authors
Elena Georgievna Myagkova
Precaspian agrarian federal scientific center of the Russian academy of sciences
Author for correspondence.
Email: govsan29@mail.ru
Researcher, Department of Agriculture and Complex Land Reclamation
8 Severny block, p. Solenoye Zaymishche, Chernoyarsk district, Astrakhan region, 416251, Russian FederationReferences
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