A Combined Association Mapping and Linkage Analysis of Kernel Number Per Spike in Common Wheat (Triticum aestivum L.)

被引:55
作者
Shi, Weiping [1 ]
Hao, Chenyang [2 ]
Zhang, Yong [3 ]
Cheng, Jingye [4 ]
Zhang, Zheng [1 ]
Liu, Jian [3 ]
Yi, Xin [3 ]
Cheng, Xiaoming [3 ]
Sun, Daizhen [1 ]
Xu, Yanhao [5 ,6 ]
Zhang, Xueyong [2 ]
Cheng, Shunhe [3 ]
Guo, Pingyi [1 ]
Guo, Jie [1 ]
机构
[1] Shanxi Agr Univ, Coll Agron, Jinzhong, Peoples R China
[2] Chinese Acad Agr Sci, Inst Crop Sci,Minist Agr, Key Lab Crop Gene Resources & Germplasm Enhanceme, Natl Key Facil Crop Gene Resources & Genet Improv, Beijing, Peoples R China
[3] Minist Agr, Lixiahe Agr Inst Jiangsu Prov, Key Lab Wheat Biol & Genet Improvement Low & Midd, Yangzhou, Jiangsu, Peoples R China
[4] Yangzhou Univ, Coll Agron, Yangzhou, Jiangsu, Peoples R China
[5] Yangtze Univ, Hubei Collaborat Innovat Ctr Grain Ind, Jingzhou, Peoples R China
[6] Yangtze Univ, Coll Agr, Jingzhou, Peoples R China
来源
FRONTIERS IN PLANT SCIENCE | 2017年 / 8卷
基金
国家重点研发计划;
关键词
bi-parental population analysis; GWAS; iSelect wheat 90K SNP chip; GENOME-WIDE ASSOCIATION; QUANTITATIVE TRAIT LOCI; NUCLEOTIDE POLYMORPHISM DISCOVERY; LINEAR UNBIASED PREDICTION; DOUBLED HAPLOID POPULATION; BACKCROSS QTL ANALYSIS; THOUSAND GRAIN WEIGHT; YIELD-RELATED TRAITS; HIGH-DENSITY; AGRONOMIC TRAITS;
D O I
10.3389/fpls.2017.01412
中图分类号
Q94 [植物学];
学科分类号
071001 ;
摘要
Kernel number per spike (KNPS) in wheat is a key factor that limits yield improvement. In this study, we genotyped a set of 264 cultivars, and a RIL population derived from the cross Yangmai 13/C615 using the 90 K wheat iSelect SNP array. We detected 62 significantly associated signals for KNPS at 47 single nucleotide polymorphism (SNP) loci through genome-wide association analysis of data obtained from multiple environments. These loci were on 19 chromosomes, and the phenotypic variation attributable to each one ranged from 1.53 to 39.52%. Twelve (25.53%) of the loci were also significantly associated with KNPS in the RIL population grown in multiple environments. For example, BS00022896_51-2ATT, BobWhite_c10539_201-2DAA, Excalibur_c73633_120-3BGG, and Kukri_c35508_426-7DTT were significantly associated with KNPS in all environments. Our findings demonstrate the effective integration of association mapping and linkage analysis for KNPS, and underpin KNPS as a target trait for marker-assisted selection and genetic fine mapping.
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收藏
页数:13
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