PRODUCTIVITY ELEMENTS IN BREEDING LINES OF SPRING BARLEY

Abstract

Data are given from experiments on studying spring barley accessions in 2012-2014. Variety trial on studying and evaluating productivity of collection and breeding lines of spring barley was conducted in the experimental field of the Tuvinian Research Institute of Agriculture in 2012-2014. Investigations were carried out under conditions of sharply continental climate in the Republic of Tuva. The objects of study were 24 breeding lines of spring barley. Productivity and grain quality were analyzed depending on a variety and weather conditions. Based on the study were selected the best breeding lines having a number of economic characters, and variety specimens most adapted to natural-climatic conditions of the region. There were revealed the lines with the index of productivity elements higher three standard deviations (X + 3s), which have been of interest for further study as sources of high productivity and resistance to biotic and abiotic stresses. Among the 24 breeding lines of spring barley studied, the two was found to be high-productive; seven have the high grain content; four the maximum ear productivity; five high thousand-kernel weight. The four breeding lines characterized by a complex of valuable traits were selected. There were revealed distinctions as to such quantitative elements as height of the plant, ear productivity, grain weight per plant, thousand-kernel weight. Based on the data obtained, one can distinguish a two-row breeding line K-23682 characterized by stable productivity across years and high indices of productivity elements, which can be included in the variety trial scheme as a promising line.