| 玉米丝黑穗病苗期快速鉴定方法 |
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| 引用本文： | 王振华,刘长华,张林,李新海.玉米丝黑穗病苗期快速鉴定方法[J].植物保护,2009,35(6):99-103. |
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| 作者姓名： | 王振华 刘长华 张林 李新海 |
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| 作者单位： | 1. 东北农业大学,哈尔滨,150030
2. 中国农业科学院作物科学研究所,北京,100081 |
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| 基金项目： | 国际科技合作项目，黑龙江省青年学术骨干教师支持计划项目 |
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| 摘 要： | 本试验以已知抗性的51份玉米自交系为材料，研究了苗期接菌条件下可溶性糖含量与田间发病率的关系。结果表明，在15/25 ℃变温及1%土壤接菌条件下，幼苗可溶性糖含量与田间发病率存在极显著的正相关（r＝0.799 4）。采用逻辑斯蒂模型分别建立了抗、感自交系可溶性糖含量与田间发病率的一元曲线回归方程：y=12.084 8/［1+exp (6.372 5-0.367 5x)］和y=91.017 0/［1+exp（18.448 8-0.788 8x）］，以此建立了以接菌幼苗可溶性糖含量为指标的抗性评价方法，并用于未知抗性种质资源的鉴定。
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| 关 键 词： | 玉米 丝黑穗病 苗期 鉴定方法 |
Rapid evaluation method for head smut at seedling stage of maize |
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| Wang Zhenhua,Liu Changhua,Zhang Lin,Li Xinhai.Rapid evaluation method for head smut at seedling stage of maize[J].Plant Protection,2009,35(6):99-103. |
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| Authors: | Wang Zhenhua Liu Changhua Zhang Lin Li Xinhai |
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| Institution: | 1. Northeast Agricultural University, Harbin150030, China;2. Institute of Crop Science, Chinese Academy of Agricultural Sciences, Beijing100081, China |
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| Abstract: | The relationships between soluble sugar content and disease percentage were analyzed in 51 inbred lines at seedling stage with artificial inoculation.The significant positive correlation(r=0.799 4)was found between the soluble sugar content and disease percentage under the conditions of 15/25℃ and 1% soil bacteria.Using logistic model,regression equations were established as followed:y=12.084 8/1+exp(6.372 5-0.367 5x)]and y=91.017 0/1+exp(18.448 8-0.788 8x)],which was used to evaluate the responses of maize inbred lines to head smut resistance. |
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| Keywords: | maize head smut seedling stage evaluation method |
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