Genome-wide association mapping for high temperature tolerance in wheat through 90k SNP array using physiological and yield traits
文献类型： 外文期刊
作者： Ahmed, Hafiz Ghulam Muhu-Din 1 ; Naeem, Muhammad 1 ; Zeng, Yawen 2 ; Rashid, Muhammad Abdul Rehman 3 ; Ullah, Aziz 4 ; Saeed, Amjad 5 ; Qadeer, Abdul 6 ;
作者机构： 1.Islamia Univ Bahawalpur, Fac Agr & Environm, Dept Plant Breeding & Genet, Bahawalpur, Pakistan
2.Yunnan Acad Agr Sci, Biotechnol & Germplasm Resources Inst, Kunming, Yunnan, Peoples R China
3.Govt Coll Univ Faisalabad, Dept Bioinformat & Biotechnol, Faisalabad, Pakistan
4.Univ Sargodha, Dept Plant Breeding & Genet, Sargodha, Pakistan
5.Islamia Univ Bahawalpur, Fac Agr & Environm, Dept Forestry Range & Wildlife Management, Bahawalpur, Pakistan
6.Univ Agr Faisalabad, Inst Soil & Environm Sci, Soil Fertil & Plant Nutr Lab, Faisalabad, Pakistan
期刊名称：PLOS ONE （ 影响因子：3.752； 五年影响因子：4.069 ）
ISSN： 1932-6203
年卷期： 2022 年 17 卷 1 期
页码：
收录情况： SCI
摘要： Dissecting the genetic basis of physiological and yield traits against tolerance to heat stress is an essential in wheat breeding programs to boost up the wheat yield for sustainable food security. Herein, a genome-wide association study (GWAS) was performed to reveal the genetic basis of heat tolerance using high-density Illumina 90K Infinium SNPs array through physiological and yield indices. These indices were phenotyped on a diverse panel of foreign and domestic genotypes of Pakistan, grown in normal and heat-stressed environments. Based on STRUCTURE analysis, the studied germplasm clustered into four sub-population. Highly significant variations with a range of moderate (58.3%) to high (77.8%) heritability was observed under both conditions. Strong positive correlation existed among physiological and yield related attributes. A total of 320 significant (-log10 P >= 3) marker-trait associations (MTAs) were identified for the observed characters. Out of them 169 and 151 MTAs were recorded in normal and heat stress environments, respectively. Among the MTA loci, three (RAC875_c103017_302, Tdurum_contig42087_1199, and Tdurum_contig46877_488 on chromosomes 4B, 6B, and 7B respectively), two (BobWhite_c836_422 and BS00010616_51) and three (Kukri_rep_c87210_361, D_GA8KES401BNLTU_253 and Tdurum_contig1015_131) on chromosomes 5A, 1B, and 3D at the positions 243.59cM, 77.82cM and 292.51cM) showed pleiotropic effects in studied traits under normal, heat-stressed and both conditions respectively. The present study not only authenticated the numerous previously reported MTAs for examined attributes but also revealed novel MTAs under heat-stressed conditions. Identified SNPs will be beneficial in determining the novel genes in wheat to develop the heat tolerant and best yielded genotypes to fulfill the wheat requirement for the growing population.
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