Correlation between traits of spring barley varieties

Abstract

In 2014-2015, the Laboratory of Barley Breeding and Genetics of the Plant Production Institute nd. a VYa Yuryev of National Academy of Agrarian Sciences of Ukraine determined correlations between indices of quantitative traits of spring barley varieties by paired correlation coefficients.

The aim and tasks of the study. The research aim was to determine correlations between quantitative traits of spring barley varieties.

Materials and methods. The following spring barley varieties were studied: Modern, Hranal, Zvershennia, Vitrazh, Etiket, Dzherelo, Vzirets, Badioryy, Maliovnychyy, Pasadena, Tolar. Paired correlation coefficients (r) between quantitative traits of plants were determined by BA Dospekhov’s method.

Results and discussion. In the test varieties, there were significantly strong (r> 0,70) and moderate (r <0,70) correlations both in 2014 and in 2015 between the following traits: productivity (grain weight) of plant and productive tillering (moderate in 2014 with r = 0.62; strong in 2015 with r = 0.72); productivity of plant and straw weight (strong in 2014 with r = 0.89 and in 2015 with r = 0.81); 1000-grain weight and plant height (strong in 2014 with r = 0.75, moderate in 2015 with r = 0.65); the grain number per spike and the spikelet number per spike (strong in 2014 with r = 0.96 and in 2015 with r = 0.91); the spikelet number per spike and plant height (moderate in 2014 with the r = 0.55 and in 2015 with the r = 0.55); productive tillering and straw weight (moderate in 2014 with r = 0.61 and strong in 2015 with r = 0.76.); productive tillering and total tillering (higher than moderate in 2014 with r = 0.70 and strong in 2015 with r = 0.82); 1000-grain weight and grain weight per spike (moderate in 2014 with r = 0.63 and in 2015 with r = 0.54). It is possible to select plants for a trait, using the parameter of another trait.

Conclusions. Over two years (2014-2015), we found significantly strong and moderate correlations between the quantitative traits of “plant productivity” and its structural components for the test spring barley varieties (Modern, Hranal, Zvershennia, Vitrazh, Etket, Dzherelo, Vzirets, Badioryy, Maliovnychyy, Pasadena, Tolar), which makes selections based on relationships between these traits expedient.