Comparative analysis of winter rye varieties by ecological stability in the conditions of Kirov region
| Autor: | N. A. Nabatova, E. I. Utkina, E. S. Parfenova, M. G. Shamova, E. A. Psareva, M. N. Zhukova |
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| Jazyk: | ruština |
| Rok vydání: | 2022 |
| Předmět: | |
| Zdroj: | Аграрная наука Евро-Северо-Востока, Vol 23, Iss 5, Pp 655-665 (2022) |
| Druh dokumentu: | article |
| ISSN: | 2072-9081 2500-1396 |
| DOI: | 10.30766/2072-9081.2022.23.5.655-665 |
| Popis: | Ten winter rye varieties of Russian breeding were evaluated by yield in the conditions of Kirov region. The average yield of winter rye varieties during the research period of 2015-2021 was 2.64 t/ha and varied by years from 1.39 t/ha (2016, index of environmental conditions (Ij) = -1.25) to 4.22 t/ha (2015, Ij = 1.58). The variation of average yield by varieties was from 1.64 (Saratovskaya 7) to 3.62 t/ha (Flora). The proportion of the influence on the yield of the factor "conditions of the year" was 43 %, of the factor "variety" − 28 %. Different adaptability and environmental sustainability of winter rye varieties are indicated by: coefficients of plasticity (bi) – 0.40...1.39, stability (σd2) – 0.25...1.07, multiplicity (KM) – 1.31...2.97, adaptability (CA) – 56.3...142.4, variation (V) − 25...87 %; phenotypic stability factor (SF) − 1.9...20.5; yield spread (d) − 0.47...0.95, home-ostability (Hom) − 0.02...0.13 and stress tolerance (Y2 - Y1) – -2.28...-3.62. Based on the summation of the ranks according to 9 indicators of adaptability and environmental stability of the «yield» trait, the varieties most adapted to the limiting environmental factors (Falenskaya 4, Alice, Rushnik and Flora) have been chosen. |
| Databáze: | Directory of Open Access Journals |
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