您好，欢迎访问四川省农业科学院 机构知识库！

Combination of multi-locus genome-wide association study and QTL mapping reveals genetic basis of tassel architecture in maize

文献类型： 外文期刊

作者： Wang, Yanli 1 ; Chen, Jie 2 ; Guan, Zhongrong 5 ; Zhang, Xiaoxiang 1 ; Zhang, Yinchao 1 ; Ma, Langlang 1 ; Yao, Yiming 1 ;

作者机构： 1.Sichuan Agr Univ, Maize Res Inst, Key Lab Biol & Genet Improvement Maize Southwest, Chengdu 611130, Sichuan, Peoples R China

2.Sichuan Acad Agr Sci, Crop Res Inst, Chengdu 610066, Sichuan, Peoples R China

3.Sichuan Agr Univ, Inst Anim Nutr, Chengdu 611130, Sichuan, Peoples R China

4.Sichuan Acad Agr Sci, Inst Agroprod Proc Sci & Technol, Chengdu 610066, Sichuan, Peoples R China

5.Chongqing Yudongnan Acad Agr Sci, Chongqing 408000, Peoples R China

关键词： Maize; Tassel branch number; Multi-locus GWAS; QTNs; QTL

期刊名称：MOLECULAR GENETICS AND GENOMICS （ 影响因子：3.291； 五年影响因子：3.257 ）

ISSN： 1617-4615

年卷期： 2019 年 294 卷 6 期

页码：

收录情况： SCI

摘要： Maize tassel architecture is a complex quantitative trait that is significantly correlated with biomass yield and grain yield. The present study evaluated the major trait of maize tassel architecture, namely, tassel branch number (TBN), in an association population of 359 inbred lines and an IBM Syn 10 population of 273 doubled haploid lines across three environments. Approximately 43,958 high-quality single nucleotide polymorphisms were utilized to detect significant QTNs associated with TBN based on new multi-locus genome-wide association study methods. There were 30, 38, 73, 40, 47, and 53 QTNs associated with tassel architecture that were detected using the FastmrEMMA, FastmrMLM, EM-BLASSO, mrMLM, pkWMEB, and pLARmEB models, respectively. Among these QTNs, 51 were co-identified by at least two of these methods. In addition, 12 QTNs were consistently detected across multiple environments. Furthermore, 19 QTLs distributed on chromosomes 1, 2, 3, 4, 6, and 7 were detected in 3 environments and the BLUP model based on 6618 bin markers, which explained 3.64-10.96% of the observed phenotypic variations in TBN. Of these, three QTLs were co-detected in two environments. One QTN associated with TBN was localized to one QTL. Approximately 55 candidate genes were detected by common QTNs and LD criteria. One candidate gene, Zm00001d016615, was identified as a putative target of the RA1 gene. Meanwhile, RA1 was previously validated to plays an important role in tassel development. In addition, the newly identified candidate genes Zm00001d003939, Zm00001d030212, Zm00001d011189, and Zm00001d042794 have been reported to involve in a spikelet meristem identity module. The findings of the present study improve our understanding of the genetic basis of tassel architecture in maize.

  • 相关文献
作者其他论文 更多>>
置顶
购物车
反馈

© 京ICP备09089781号-29 主办单位：四川省农业科学院

学术资源： 中国农业科学院 农业专业知识服务系统 农科联盟资源共建共享平台 中国农业科技文献与信息服务平台 中国农业期刊集成服务平台