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《江苏农业科学》[ISSN:1002-1302/CN:32-1214/S]

卷:

第51卷

期数:

2023年第14期

页码:

65-70

栏目:

生物技术

出版日期:

2023-07-20

文章信息/Info

Title:

Genomic selection for resistance to maize gibberella ear rot

作者:

周广飞¹; 2; 高夕全²

1.江苏沿江地区农业科学研究所，江苏南通 226012； 2.南京农业大学作物遗传与种质创新国家重点实验室，江苏南京 210095

Author(s):

Zhou Guangfei; et al

关键词:

玉米; 禾谷镰孢菌穗腐病; 基因组选择; 预测准确性; 遗传改良

Keywords:

-

分类号:

S435.131.4⁺9

DOI:

-

文献标志码:

A

摘要:

禾谷镰孢菌穗腐病是玉米种植区普遍发生的重要病害之一，探究基因组选择在禾谷镰孢菌穗腐病抗性遗传改良中的应用潜力，有助于选育抗病品种。以玉米自交系DH4866和T877组配的重组自交系群体，对玉米禾谷镰孢菌穗腐病抗性进行基因组选择研究，分析数据模型、群体大小、标记密度、显著位点和遗传效应对预测准确性的影响。结果表明，在5种数据模型中，gBLUP模型对玉米禾谷镰孢菌穗腐病抗性具有较高的预测能力。预测准确性随着训练群体样本大小的增加而提高，当训练群体占群体总数80%时，预测准确性达到最高。当标记数量达到500时，即可获得相对较高的预测准确性。相对于随机效应模型，将显著位点作为固定效应没有显著提高预测准确性。相对于仅考虑加性效应，当在模型中考虑加加上位性效应时，预测准确性并没有得到显著提高。研究结果可为玉米禾谷镰孢菌穗腐病抗性的遗传改良提供理论参考。

Abstract:

-

参考文献/References:

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备注/Memo

备注/Memo:

收稿日期：2022-10-12
基金项目：江苏省种业振兴揭榜挂帅项目(编号：JBGS［2021］054、JBGS［2021］009)；江苏省南通市科技项目(编号：JC2021153、MS22021039)；江苏沿江地区农业科学研究所学科建设专项基金(编号：YJXK［2021］201)。
作者简介：周广飞(1988—)，男，山东济宁人，博士，助理研究员，从事玉米遗传育种研究。E-mail：gfzhou88@jaas.ac.cn。

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更新日期/Last Update: 2023-07-20