Joint-linkage mapping and GWAS reveal extensive genetic loci that regulate male inflorescence size in maize

Plant Biotechnology Journal
Xun WuTianyu Wang

Abstract

Both insufficient and excessive male inflorescence size leads to a reduction in maize yield. Knowledge of the genetic architecture of male inflorescence is essential to achieve the optimum inflorescence size for maize breeding. In this study, we used approximately eight thousand inbreds, including both linkage populations and association populations, to dissect the genetic architecture of male inflorescence. The linkage populations include 25 families developed in the U.S. and 11 families developed in China. Each family contains approximately 200 recombinant inbred lines (RILs). The association populations include approximately 1000 diverse lines from the U.S. and China. All inbreds were genotyped by either sequencing or microarray. Inflorescence size was measured as the tassel primary branch number (TBN) and tassel length (TL). A total of 125 quantitative trait loci (QTLs) were identified (63 for TBN, 62 for TL) through linkage analyses. In addition, 965 quantitative trait nucleotides (QTNs) were identified through genomewide study (GWAS) at a bootstrap posterior probability (BPP) above a 5% threshold. These QTLs/QTNs include 24 known genes that were cloned using mutants, for example Ramosa3 (ra3), Thick tassel dwarf1 (td1), t...Continue Reading

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Citations

Jan 1, 2017·Molecular Plant·Yingjie XiaoJianbing Yan
Apr 22, 2017·Journal of Cellular Physiology·Yeliz DemirciTurgay Unver
Feb 25, 2018·Plant Biotechnology Journal·Tianwang WenZhongxu Lin
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Mar 2, 2018·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·Renyu ZhangXiaohong Yang
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Feb 20, 2017·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·Chaoshu ZhangJianfeng Weng
Jan 10, 2017·The New Phytologist·Guanghui XuFeng Tian
Jan 10, 2019·Frontiers in Plant Science·Qingzhang DuDeqiang Zhang
Dec 7, 2020·The New Phytologist·Samuel LeiboffMichael J Scanlon
Jan 1, 2021·Plant Biotechnology Journal·Xiner QinBing Yue
May 11, 2021·3 Biotech·Kumari ShikhaB Sinha
Jul 12, 2021·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·Zhigang LiHai-Chun Jing

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Methods Mentioned

BETA
dissection
genotyping

Software Mentioned

GAPIT R package
SAS
IciMapping

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