DefinePK

Abstract

The present research was carried out to analysis the genetic diversity in 19 Mexican bread wheat lines for yield and its associated traits. The analysis of variance, genetic distance and principal component analysis were analyzed. Results showed that genotypes differed significantly at P ≤0.01 for all the traits, with the exception of spikelets spike-1, registering the significant genetic variability among the genotypes for further evaluation. Considering the genetic distance, out of 171 pairs of comparisons, 10 pairs showed the highest genetic distance which can extensively be utilized in heterosis breeding; however, 15 pairs of comparisons revealed narrow genetic distance, which may be proved useful in backcross breeding programs. In total, first three principal components accounted 61.00% variability, which is considered very high and could be utilized for further breeding programs in bread wheat.
Keywords: Bread wheat; Yield traits; Genetic distance; Principal Component Analysis
http://dx.doi.org/10.19045/bspab.2016.50004