Genetic Analysis and QTLs Identification of Some Agronomic Traits in Bread Wheat (Triticum aestivum L.) under Drought Stress

Document Type : Original research paper


1 Department of Plant Breeding, Graduate University of Advanced Technology, Kerman-Iran

2 Department of Biotechnology, Institute of Science, High Technology & Environmental Sciences, Graduate University of Advanced Technology, Kerman-Iran

3 Department of Agronomy and Plant Breeding, College of Agriculture, Shahid Bahonar University of Kerman, Kerman, Iran.


In order to study the genetic conditions of some agronomic traits in wheat, a cross was made between Gaspard and Kharchia varieties. F2, F3 and F4 progenies with parents were evaluated under drought conditions. Three-parameter model [m d h] considered as the best fit for number of fertile tiller and flag leaf length using generations mean analysis method. For number of grain per spike and main spike grain weight three-parameter model [m d i] was used. For number of spikelet per spike, grain yield and plant height four-parameter model [m d h i] was used. The heritability values ranged from 56% for flag leaf length to 81% for grain yield. The F3 generation with 100 individuals was used to construct a genetic linkage map. Using the method of composite interval mapping 3, 1, 5, 2, 2 and 1 QTLs were detected for plant height, grain yield, number of spikelet per spike, flag leaf length, main spike grain weight and number of fertile tiller respectively.


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  • Receive Date: 19 November 2016
  • Revise Date: 23 May 2017
  • Accept Date: 07 June 2017
  • First Publish Date: 01 July 2017