| 20%PEG-6000胁迫下54个玉米自交系苗期抗旱性评价 |
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| 引用本文： | 文景茹,柯永培,余学杰,梁雪,赵长云,李仁飞,石海春.20%PEG-6000胁迫下54个玉米自交系苗期抗旱性评价[J].玉米科学,2021,29(1):46-53. |
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| 作者姓名： | 文景茹 柯永培 余学杰 梁雪 赵长云 李仁飞 石海春 |
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| 作者单位： | 四川农业大学农学院, 四川 温江 611130;西南作物基因资源发掘与利用国家重点实验室, 四川 温江 611130;四川农业大学农学院, 四川 温江 611130;西南作物基因资源发掘与利用国家重点实验室, 四川 温江 611130;四川农大正红生物技术有限责任公司, 成都 610213 |
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| 基金项目： | 四川省重点研发项目（2019YFN0012）、四川省科技支撑计划项目（2016NYZ0006） |
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| 摘 要： | 以54个玉米自交系为材料,利用20%PEG-6000溶液对苗期进行干旱胁迫,考察株高、根冠比等9个指标。通过主成分分析筛选指标,再利用隶属函数法计算出综合抗旱值D,根据D值对他们的耐旱性进行评价和聚类分析。结果表明,K186、K123等7个自交系与郑58聚为一类,属于抗旱自交系;K121、K182等25个自交系与昌7-2聚为一类,为中等抗旱自交系;K101、G2490等20个自交系聚为一类,为干旱敏感型自交系。
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| 关 键 词： | 玉米自交系 苗期 抗旱性 20%PEG-6000 |
| 收稿时间： | 2020/5/14 0:00:00 |
Evaluation of Drought Resistance in 54 Maize Inbred Lines under 20% PEG-6000 Stress Seedling Stages |
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| WEN Jing-ru,KE Yong-pei,YU Xue-jie,LIANG Xue,ZHAO Chang-yun,LI Ren-fei,SHI Hai-chun.Evaluation of Drought Resistance in 54 Maize Inbred Lines under 20% PEG-6000 Stress Seedling Stages[J].Journal of Maize Sciences,2021,29(1):46-53. |
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| Authors: | WEN Jing-ru KE Yong-pei YU Xue-jie LIANG Xue ZHAO Chang-yun LI Ren-fei SHI Hai-chun |
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| Institution: | College of Agronomy, Sichuan Agricultural University, Wenjiang 611130;State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Wenjiang 611130;College of Agronomy, Sichuan Agricultural University, Wenjiang 611130;State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Wenjiang 611130;Sichuan Nongda Zhenghong Bio Co., Ltd., Chengdu 610213, China |
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| Abstract: | Fifty-four maize inbred lines were used as the materials, and 20% PEG-6000 solution was used for drought stress at the seedling stage, and 9 indicators such as plant height and root-shoot ratio were investigated. The indexes were selected by principal component analysis, and then the comprehensive drought resistance value D was calculated using the membership function method, and their drought tolerance was evaluated and clustered according to the D value. The main results showed that, 7 inbred lines such as K186 and K123 were grouped with Zheng 58 and belong to a drought-resistant inbred line; 25 inbred lines such as K121 and K182 were grouped with Chang7-2 and belong to medium-drought-resistant inbred line; 20 inbred lines such as K101 and G2490 were grouped into one class, and they were drought-sensitive inbred lines. |
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| Keywords: | Maize inbred line Seedling stage Drought resistance 20% PEG-6000 |
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