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

被引：56

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.

引用

页数：13

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