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玉米百粒重全基因组关联分析

Genome-Wide Association Study of 100-kernel Weight in Maize

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  • NETL
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以100份玉米自交系为材料,通过对2019-2020年山西榆次和太谷两地百粒重数据的测定,计算最佳线性无偏差预测值,结合均匀分布于玉米基因组的44 935个SNP标记,基于GLM模型和FarmCPU模型对百粒重进行全基因组关联分析(Genome-wide association study,GW AS).关联分析结果表明,共鉴定到25个与百粒重显著关联的 SNP(P＜2.324e-5),其中,关联位点 1_274302441、1_298518163 和 9_32699254 位于已定位粒重 QTL(Quantitative trait loci)的 bin内.在显著SNP位点的连锁不平衡范围内共挖掘出 28个候选基因,其中,GRMZM2G116640(乙酰氨基葡萄糖转移酶)、GRMZM2G048733(ABA受体蛋白)、GRMZM2G106424(14-3-3 类蛋白)和GRMZM2G024104(谷氨酰胺合成酶)等是重要的百粒重候选基因.
In this study,100 maize inbred lines were used as materials,and the best linear unbiased predicted value was calculated by measuring the 100-kernel weight data of Yuci and Taigu in Shanxi from 2019 to 2020.Ge-nome-wide association study(GWAS)based on GLM model and FarmCPU model for 100-kernel weight.The results of association analysis showed that a total of 25 SNPs(P＜2.324e 5)significantly associated with 100-grain weight were identified,among which the association loci 1_274302441,1_298518163 and 9_32699254 were located in the bin of the mapped grain weight QTL(Quantitative trait loci).A total of 28 candidate genes were mined within the linkage disequilibrium of significant SNP sites,among which GRMZM2G116640(acetylglucosamine transferase),GRMZM2G048733(ABA receptor protein),GRMZM2G106424(14-3-3 class protein)and GRMZM2G024104(Gluta-mine synthetase)are important 100-kernel weight candidate genes.

Maize100-kernel weightGenome wide association studyCandidate gene mining

张坤、张正、张伟、董春林、常建忠

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山西农业大学山西有机旱作农业研究院/有机旱作山西省重点实验室,太原 030031

玉米 百粒重 全基因组关联分析 候选基因挖掘

山西省重点研发计划项目山西省现代农业产业技术体系建设专项资金资助项目山西农业大学生物育种工程项目宁夏回族自治区重点研发计划项目山西农业大学省部共建有机旱作农业国家重点实验室自主研发项目

201903D21078YZGC1462021BBF02035202105D121008-2-7

2024

10.13597/j.cnki.maize.science.20240106

玉米科学
吉林省农业科学院 国家玉米工程技术研究中心(吉林) 国家玉米改良中心 中国农业科技东北创新中心

玉米科学

CSTPCD北大核心
影响因子：1.163
ISSN：1005-0906
年,卷(期)：2024.32(1)
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