Use of mathematical analyzes to determine the homogeneity of Bulgarian cultivars of common winter wheat (Triticum aestivum L.) I part

Evgeniy Dimitrov, Bogdan Bonchev, Zlatina Uhr

Abstract: The study period covers the vegetation season 2016/2017 to 2017/2018. To determine homogeneity of the cultivars, a complex of mathematical treatments was used homogeneity test of the traits of cultivars and one factor dispersion analysis for each of traits. The progenies must be homogeneous. Cultivar Nikibo (grain weight of spike), Ginra (length of spike) and Gaya 1 for number of tillers/m2 showed trend of low homogeneity with significance less than 0.05 for two years. All studied progenies of the cultivars of common winter wheat did not show significant differences in the application of dispersion analysis. The described trend of low homogeneity for some traits (tiller number per m2 for cultivar Gaya 1, length of spike of cultivar Ginra and weight grains per spike for cultivar Nikibo) is not enough evidence to claim that cultivars are not homogeneous in its progenies, because is not proven difference between them. Tzarevetz is the cultivar that shows homogeneity of the all traits for whole period of study. The Cultivar Farmer is the second cultivar that is homogeneous for length of spike, plant height, and number of kernels per spike, weight of grains per spike, weight thousand grains, and kernel density for the period of study.

Keywords: cultivars; homogeneity; progenies; wheat

Date published: 2022-10-27