| 玉米秸秆消化率全基因组关联分析 |
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| 引用本文： | 林淼,张秋芝,史利玉,刘蓓,王红武,潘金豹.玉米秸秆消化率全基因组关联分析[J].作物杂志,2020,36(6):23-4. |
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| 作者姓名： | 林淼 张秋芝 史利玉 刘蓓 王红武 潘金豹 |
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| 作者单位： | 1北京农学院,102206,北京2中玉金标记（北京）生物技术股份有限公司,102206,北京 |
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| 基金项目： | 国家重点研发计划：东华北区早熟抗逆耐密适宜机械化玉米新品种培育(2017YFD0101105-2) |
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| 摘 要： | 48h体外干物质消化率（48h in vitro dry matter digestibility, 48h IVDMD）是衡量青贮玉米品质的重要指标。为了初步探究玉米秸秆消化率的分子遗传机理,以341份玉米自交系为材料,于2018年在沈阳和通辽种植,收获后测定秸秆48h IVDMD。利用全基因组重测序获得的6 276 612个高质量SNPs进行全基因组关联分析,共检测到153个与玉米秸秆消化率显著相关的SNPs位点（P<1.0×10-6）,4个SNPs显著水平在P<1.0×10-8以上;共找到38个秸秆消化率的候选基因,主要涉及细胞生长发育、防御反应和信号转导等生物学功能。
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| 关 键 词： | 玉米 秸秆 48h干物质消化率 全基因组关联分析 |
| 收稿时间： | 2020-04-12 |
Genome-Wide Association Study of Digestibility of Straw in Maize |
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| Lin Miao,Zhang Qiuzhi,Shi Liyu,Liu Bei,Wang Hongwu,Pan Jinbao.Genome-Wide Association Study of Digestibility of Straw in Maize[J].Crops,2020,36(6):23-4. |
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| Authors: | Lin Miao Zhang Qiuzhi Shi Liyu Liu Bei Wang Hongwu Pan Jinbao |
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| Institution: | 1Beijing University of Agriculture, Beijing 102206, China2Zhongyu Golden Marker (Beijing) Biotechnology Incorporated Company, Beijing 102206, China |
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| Abstract: | The 48h dry matter digestibility (48h IVDMD) is an important index to measure the quality of silage maize. In order to explore the molecular genetic mechanism of digestibility of 48h IVDMD, 341 maize inbred lines were evaluated for 48h IVDMD in 2018 in Shenyang and Tongliao. These inbred lines were subjected to whole genome sequencing, generating a total of 6 276 612 high quality SNPs. GWAS analysis detected 153 SNPs using the threshold of P <1.0×10-6 and 4 SNPs using the threshold of P < 1.0×10-8. Thirty-eight candidate genes were identified based on the GWAS, and the biological functions of these genes were mainly involved in cell growth and development, defense reaction, and signal transduction. |
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| Keywords: | Maize Straw 48h dry matter digestibility Genome-wide association study |
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