St. M. TSVETKOV, K. St. TSVETKOV and T. PETROVA
Dobroudja Agricultural Institute, BG - 9520 General Toshevo, Bulgaria
TSVETKOV, St., K. TSVETKOV and T. PETROVA, 2007. Genetic sources with high cold resistance in breeding of poly-rowed barley (Hordeum sativum Jess., ssp. vulgare L.): I. Cold resistance in F1. Bulg. J. Agric. Sci., 13: 39-43
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 F1 in the reciprocal crosses occurred in the direction of the colder resistant parental component. Instances of super dominant heritability in F1 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.