Published in Scientific Papers. Series A. Agronomy, Vol. LXV, Issue 1
Written by Evgeniy DIMITROV, Zlatina UHR, Vanya DELIBALTOVA, Rangel DRAGOV
The study was conducted in the period 2019-2021 on the experimental field of IRGR "K. Malkov” Sadovo. Twenty advanced breeding lines and four common winter wheat varieties were studied according to important economic traits. Grain yield, plant height, thousand grain weight and test weight were reported. To assess the genetic similarity and distance between the different genotypes, cluster analysis and analysis of the main components were applied. Based on the results of the cluster analysis, the studied genotypes were divided into five large cluster groups. The applied analysis of the main components shows that the components PC 1 and PC 2 explain 67.9% of the total variation of all traits by genotypes. The line MX 270/86 and the Enola variety, located in the most distant parts of the coordinate system, can be mentioned as a source of strong variation and genetic difference.
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