Paper Details

Mapping quantitative trait loci of morphological attributes using drought mapping population 5 (Opata × SH349) under drought stress

Sammer Fatima, Muhammad Arshad

DOI: https://dx.doi.org/10.12692/ijb/4.12.134-143

Int. J. Biosci. 4(12), 134-143. June, 2014. (PDF)

Abstract:

Background, Synthetic hexaploid wheat has drought tolerant characteristics and Opata is high yielding wheat cultivar. In order to investigate the genetic basis of this tolerance, a segregating population composed of 84 double haploid mapping population 5 (DR.MP. 5) derived from the cross Opata × SH349, was evaluated under drought stress in wheat in field and tunnel environment. During the present research, the morphological study such as awn color, prostrate vs erect habit and pubescent vs glabrous habit was done for the two consecutive years. Results, The QTLs found during the recent study were all novel except the four QTLs located on 2D chromosome. The QTLs found by Multiple QTL Mapping and Interval Mapping were major QTLs. The LOD value varies from 11.63 to 21.8 by Multiple QTL Mapping and from 10.72 to 28.66 by interval mapping. Conclusions, No QTL was found for prostrate vs erect habit and pubescent vs glabrous habit. All QTLs were found for awn color. Novel QTLs for awn color were identified during the present studies, which are very important from practical point of view. These QTLs can be further utilized in Marker assisted selection or gene cloning.