BREEDING POTENTIAL OF COMMON VETCH HYBRIDS (Vicia sativa) AS AFFECTED BY DIFFERENT METHODS FOR PARENTAL SELECTION

BREEDING POTENTIAL OF COMMON VETCH HYBRIDS (Vicia sativa) AS AFFECTED BY DIFFERENT METHODS FOR PARENTAL SELECTION
Experiments that took place in 1978-2003 showed effectiveness of parental lines’ selection of Vicia sativa based on the following principles: ecological and geographical distance, difference in adaptation to contrast environments and resistance to abiotic stressors, considering the mean values. The investigations were continued in 2004-2013 on a new plant material and under different ecological conditions. The above-mentioned methods were proved to be efficient, some of them were modified. Novel varieties “Vera” and “Neposeda” were bred by ecological-geographical method. Hybrids “Orlovskaya-88” × “Uzunovskaya-83”, “sel. No T-28-(MSS)” × “Yubileynaya-110” etc. gave progenies with positive characteristics at different breeding stages. Contrast environment method gave line “No. О-76” exceeding the reference variant in productivity by 0.45 t ha-1 or 20.1% on the average for two years. Using difference in susceptibility to abiotic stresses resulted in effective combinations where under favorable conditions female parent had high productivity and drought-tolerance while male parent combined good yield capacity and resistance to excessive wetting. Thereby better adaptation to contrast stress-factors of parental pairs was crucial in obtaining leading hybrids. It is assumed that the type of exogenous stressor is not that important as the presence of stress-resistance mechanism in parental line.
Source: http://kormoproizvodstvo.ru/en/archive/1-2017/

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