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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