EVALUATION OF VARIETIES AND BREEDING LINES OF SPRING BARLEY UNDER CONDITIONS OF TUVA

Abstract

Results are given from the 4-year study of lines and varieties of spring barley bred at Krasnoyarsk, Buryat and Altai Research Institutes of Agriculture. Twenty four breeding lines were studied in the competitive variety trial nursery using the facilities of the Tuvinian Research Institute of Agriculture. It has been revealed that barley productivity depends on moisture availability and temperature regime during the growing season. It has been established that the breeding line L-21-116, bred at the Krasnoyarsk Research Institute of Agriculture within the framework of adaptive selection program, exceeds the standard cultivar Donetskiy 8 and other numbers in the number of productive stems and kernels per ear as well as in productivity. The ability of this breeding line to adapt as well as its advantage over the standard because of drought resistance and resistance to lodging has been revealed. The results of integrated evaluation of spring barley lines are indicative of the competitive ability and breeding value of the line L-21-116 in the pronounced continental climate of the Republic of Tuva.