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农学学报 ›› 2022, Vol. 12 ›› Issue (4): 13-17.doi: 10.11923/j.issn.2095-4050.cjas2021-0156

所属专题: 生物技术 植物保护 玉米

• 农艺科学/生理生化 • 上一篇    下一篇

玉米品种的抗病性评价及与农艺性状的灰色关联度分析

郗小倩(), 李洪(), 王瑞军, 张旭丽, 杨志斌   

  1. 山西农业大学高寒区作物研究所,山西大同 037000
  • 收稿日期:2021-09-26 修回日期:2021-12-05 出版日期:2022-04-20 发布日期:2022-05-19
  • 通讯作者: 李洪 E-mail:675431872@qq.com;dtghslh@163.com
  • 作者简介:郗小倩,女,1986年出生,山西阳泉人,研究实习员,本科,研究方向:玉米栽培及育种。通信地址:037000 山西省大同市平城区迎宾东路18号 山西农业大学高寒区作物研究所,Tel:18235319115,E-mail: 675431872@qq.com

Disease Resistance of Maize Varieties: Evaluation and Its Grey Correlation with Agronomic Characters

XI Xiaoqian(), LI Hong(), WANG Ruijun, ZHANG Xuli, YANG Zhibin   

  1. Institute of Crops in Cold Regions of Shanxi Agricultural University, Datong 037000, Shanxi, China
  • Received:2021-09-26 Revised:2021-12-05 Online:2022-04-20 Published:2022-05-19
  • Contact: LI Hong E-mail:675431872@qq.com;dtghslh@163.com

摘要:

为了研究玉米农艺性状和病害抗性的关系,选育出高产高抗的玉米品种,以联合体玉米区试的19个品种进行病害的抗性鉴定,用灰色关联度分析法分析农艺性状与病害抗性的关系。结果表明:19个品种对茎基腐病和穗腐病的抗性都强,对丝黑穗病和矮花叶病的抗性都弱,对大斑病的抗性中等;与产量关联度最密切的出籽率与茎基腐病关系最密切,对产量影响次之的是穗腐病,对产量影响排名第四的百粒重与大斑病关系密切,之后的穗行数与丝黑穗病关联度最大,与产量成正相关的株高与矮花叶病关联密切。因此,结合玉米农艺性状与病害抗性的灰色关联度分析和抗病性鉴定,应着重丝黑穗病、大斑病和矮花叶病的抗性选择。

关键词: 农艺性状, 病害抗性, 灰色关联度, 丝黑穗病, 大斑病, 矮花叶病, 茎基腐病, 穗腐病

Abstract:

The aims are to study the relationship between agronomic characters and disease resistance of maize, and to breed maize varieties with high yield and high disease resistance. The disease resistance of 19 varieties in the regional trial of maize in the consortium was identified, and the relationship between agronomic characters and disease resistance was analyzed by grey correlation analysis. The results showed that all the 19 varieties had strong resistance to stem base rot and ear rot, weak resistance to head smut and dwarf mosaic, and medium resistance to large leaf spot. The kernel ratio, which was most closely related to yield, had the closest relationship with stem base rot. Ear rot was the second important factor that affected the yield. 100-grain weight, which ranked fourth in the impact on the yield, was closely related to large leaf spot, and kernel row number was most closely related to head smut. The plant height, which was positively related to the yield, had close relationship with dwarf mosaic. Therefore, the grey correlation analysis and disease resistance identification combining maize agronomic characters with disease resistance should emphasize the selection of resistance to head smut, large leaf spot and dwarf mosaic.

Key words: agronomic characters, disease resistance, grey correlation degree, head smut, large leaf spot, dwarf mosaic disease, stem base rot, ear rot

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