Association mapping identifies QTLS on wheat chromosome 3A for yield related traits

Sajjad, M. and Khan, S.H. and Ahmad, M.Q. and Rasheed, A. and Mujeeb-Kazi, A. and Khan, I.A. (2014) Association mapping identifies QTLS on wheat chromosome 3A for yield related traits. Cereal Research Communications, 42 (2). pp. 177-188. ISSN 0133-3720

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Abstract

A panel of 94 diverse hexaploid wheat accessions was used to map quantitative trait loci (QTL) underlying the yield related traits on chromosome 3A. Population structure and kinships were estimated using unlinked SSR markers from all 21 chromosomes. Analysis of variance revealed significant difference among accessions; however, genotype × year interaction was non-significant for majority of yield related traits. A mixed linear model (MLM) approach identified six QTLs for four traits that individually accounted for 10.7 to 17.3% phenotypic variability. All QTLs were consistently observed for both study years. New putative QTLs for the maximum fertile florets per spike and spike length were identified. This report on QTLs for yield related traits on chromosome 3A will extend the existing knowledge and may prove useful in marker-assisted selection (MAS) for development of high yielding cultivars.

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