VARIABILITY OF ECONOMIC TRAITS OF OATS UNDER CONDITIONS OF THE WEST SIBERIAN STEPPE
Abstract
Results are given from three-year field research on the influence of variety genotypes and weather conditions on variability of economic traits of oats in the steppe zone of Western Siberia (Northern Kulunda). During all the years of research, the mid-ripening cultivar SIG formed higher grain yields, which amounted to 3.71 t/ha on average that were 0.59–0.87 t/ha, or 18.9–30.6%, higher as compared with other varieties. It is known that genotypic variability is determined from results of an analysis of phenotypic variation of a trait. We in our studies evaluated a proportion of a genotype and environments in total phenotypic variation of grain productivity, yield attributes, the length of the panicle and the height of plants during a competitive trial of oat varieties differing in maturity. The greatest impact on total variation in grain productivity and the number and weight of kernels in the panicle (from 60.0 to 73.5%) was made by growing conditions; the impact of a genotype was not more than 25%. Variation in the thousand-kernel weight was caused by both environments (49.2%) and a genotype (42.0%). Variations in the height of plants and length of the panicle depended on genotypic characteristics of a variety (41.4 and 44.0%) rather than on weather conditions (20.3 and 29.7%, respectively). The significant combined impact of a genotype and environments on variation in yield attributes was found in terms of the plant height (20.3%), productive tillering (16.8%), panicle length (14.2%), and thousand-kernel-weight (6.2%).
About the Authors
S. V. Kurkova
Siberian Research Institute of Fodder Crops, SFSCA RAS
Russian Federation
Russian Federation
Candidate of Science in Agriculture, Sector Head,
Krasnoobsk, Novosibirsk Region, 630501
N. A. Bereberdin
Siberian Research Institute of Fodder Crops, SFSCA RAS
Russian Federation
Russian Federation
Candidate of Science in Agriculture, Lead Researcher,
Krasnoobsk, Novosibirsk Region, 630501
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Review
For citations:
Kurkova S.V., Bereberdin N.A. VARIABILITY OF ECONOMIC TRAITS OF OATS UNDER CONDITIONS OF THE WEST SIBERIAN STEPPE. Siberian Herald of Agricultural Science. 2017;47(2):28-34. (In Russ.)
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