Уровень проявления и корреляция количественных признаков сортов ячменя ярового
2018
Солонечный, П. (Institute of Plant Production V. Ya. Yuryeva NAAS, Kharkov (Ukraine
The breeding value of 30 spring barley varieties in terms of plant performance and yield components were evaluated under the conditions of the Eastern Forest-Steppe of Ukraine in 2013-2016. The aim and tasks of the study were to evaluate spring barley varieties for their quantitative traits and to select the most valuable starting material. The analysis of variance revealed the peculiarities of the factor effects and their interaction on the formation of the traits of interest. The 1000-grain weight was mainly determined by the hydrothermal conditions of the year, while the spike length, grain number per spike, grain weight per spike and grain unit mainly depended on the genotype. The productive tillering capacity and plant performance were determined by interaction of these two factors. The correlation analysis revealed a compensatory effect for the plant performance: under the favorable conditions in 2016, a strong correlation was noted between the performance and productive tillering capacity (r = 0.77) and a medium correlation – between the performance, grain number per spike and grain weight per spike (r = 0.28 and r = 0.34, respectively). Under the dry conditions in 2013, the correlations changed, namely: they decreased to an insignificant level between the performance and productive tillering capacity (r = 0.18) and increased to strong levels between the performance, grain number per spike and grain weight per spike (r = 0.73 and r = 0.75, respectively). The varieties that are of greatest value as starting material for barley breeding were identified in terms of plant performance and quantitative traits.
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