Resistance of pea varieties to aschochyta blight in varying environmental сonditions

Resistance of pea varieties to aschochyta blight in varying environmental сonditions

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Results of estimation of remtavares.com resistance level and adaptive potential of pea varieties against aschochyta blight in infectious background under varying weather conditions for 2013-2016 (HTC from 0.70 up to 1.61).Two hundred and eighty two varieties of pea of domestic and foreign breeding were analysed.During investigation period 11.

8% of varieties had resistance to black-spot aschochytosis estimated by beans, and 5.0% - to light-spot one.Resistance of beans and high resistance of seeds to light-spot aschochytosis (Е-182, Д-23417, and Е-3767) and dark-spot aschochytosis (Verkholuzskaya, Е-413, Е-3588, Е-3923, and Е-3598) was revealed.This trait was more stable in varieties Stabil ngetikin (V = 14.9%), Е-3923 (V = 25.

1%), D-23417 (V = 44.1%), and Е-3767 (V = 45.1%).These varieties may be used in breeding as sources of resistance to disease.Most part of varieties selected by resistance to aschochytosis belongs to intensive type varieties (bi>1).

Varieties Ryabchik, Е-246, Valleg Fanndation, and D-23417 weakly react to change of environmental factors (bi.