Genetic Sources with High Cold Resistance in Breeding of Poly-Rowed Barley (Hordeum sativum Jess., ssp. vulgare L.): I. Cold Resistance in F_1

摘要

New genetic sources of high resistance were determined in breeding of poly-rowed barley (Hordeum sativum Jess., ssp. vulgare L.). The inheritance of cold resistance in F_1 in the reciprocal crosses occurred in the direction of the colder resistant parental component. Instances of super dominant heritability in F_1 were registered. Involving the winter poly-rowed barley varieties Mironovskiy 87 and Skorohod, for the first time in Bulgarian agriculture winter forms of poly-rowed barley varieties with unique high resistance were experimentally developed. They successfully survived the extremely low temperatures during the severe winter of 2003.