SONG Ying-bo,ZHANG Hong-quan,WANG Nan-nan,et al.Evaluation of Resistance to Maize Leaf Spot and Comparison of Agronomic Traits in European Hard Grain Type Maize Germplasm Introduced with Different Proportion of P Group Germplasm[J].HEILONGJIANG AGRICULTURAL SCIENCES,2022,(03):9-12,18.[doi:10.11942/j.issn1002-2767.2022.03.0009]
导入不同比例P群种质的欧洲硬粒型玉米种质大斑病抗性评价及农艺性状比较
- Title:
- Evaluation of Resistance to Maize Leaf Spot and Comparison of Agronomic Traits in European Hard Grain Type Maize Germplasm Introduced with Different Proportion of P Group Germplasm
- 文献标志码:
- A
- 摘要:
- 为促进欧洲硬粒型玉米种质抗性改良,本研究引入P群种质改良4份欧洲硬粒型玉米种质对大斑病的抗性,通过导入25%、50%和75%P群种质,于2018-2019年在佳木斯进行抗大斑病田间鉴定评价,综合两年各农艺性状表现比较其变化规律。结果表明:通过对4份欧洲硬粒型基础材料导入25%、50%和75%的USAP后,不同材料的大斑病抗性都有提高,中抗材料大斑病抗性提高最大,高感材料抗病平均等级值较大,改良后的材料感病依然严重。同一欧洲硬粒型种质材料随着导入USAP比例的增加生育期极显著延长,株高、茎粗和含水量极显著增加,籽粒长和籽粒宽变化不明显。由此得出,导入25%比例P群种质既可提高欧洲硬粒型种质大斑病抗性,又可基本保留欧洲硬粒型种质自身特性。
- Abstract:
- In order to promote germplasm resistance improvement of European hard grain type maize, this study introduced P group germplasm to improve the resistance of 4 European hard grain type germplasm to? Exserohilum turcicum. By introducing 25%,50% and 75% P group germplasm, field identification and evaluation of resistance to Exserohilum turcicum were carried out in Jiamusi from 2018 to 2019, and the change rules of various agronomic traits were compared based on the two years′ performance.The results showed that four European hard grain type base materials were introduced with USAP 25%,50% and 75%,and the resistance to Exserohilum turcicumof different materials was improved.The average level of disease resistance of highly susceptible materials was higher, the disease of the improved highly susceptible material was still serious.The growth period, plant height,stem diameter and water content of the same European hard grain type germplasm were significantly prolonged with the increase of USAP proportion, but the grain length and grain width did not change significantly.In conclusion, the introduction of 25% P group germplasm could not only improve the resistance to Exserohilum turcicum, but also basically retain the characteristics of European hard grain type germplasm.
参考文献/References:
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备注/Memo
收稿日期:2021-11-08基金项目:黑龙江省农业科学院院级课题(2019YYYF015,2020YYYF049);黑龙江省农业科学院“农业科技创新跨越工程”专项(HNK2019CX03)。 第一作者:宋英博(1979-),男,硕士,助理研究员,从事玉米育种与栽培研究。E-mail:1005768095@qq.com。