IDENTIFICATION OF VALUABLE TRAITS THROUGH MOLECULAR AND MORPHOLOGICAL MARKERS IN DIPLOID WHEAT

Abstract

Bread wheat (Triticum aestivum L.) harbors hexaploid genome with a complex of three diploid genomes (A, B and D). Major goals of today’s research in the wheat world count basically on improvement of grain quality and high yielding genotypes. It is relatively easier to target its diploid lineages for identification of high yielding genomic segments as compared to hexaploid with least polymorphism. The current study was aimed at the detection of genes/QTLs of high economic interest on ‘A’ genome of diploid progenitors. Segregating population from cross of Triticum monococcum and Triticum boeoticum was utilized for the purpose. 98 RILs along with parents were analyzed for various quantitative and qualitative traits. The molecular data obtained from RAPD markers was analyzed along with morphological traits data to identify association among them. Single factor ANOVA gave association (α= 0.01) of days to booting, days to heading and days to flowering with plant type and leaf orientation, flag leaf width with crown color, number of spikes per experimental unit with leaf orientation, 1000 kernel weight with aleurone color and RAPD-11 (locus b