| 小麦条锈菌群体温度敏感性测定 |
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| 引用本文： | 张静秋,刘博,陈万权,刘太国,高利.小麦条锈菌群体温度敏感性测定[J].植物病理学报,2013,43(1):88-90. |
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| 作者姓名： | 张静秋 刘博 陈万权 刘太国 高利 |
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| 作者单位： | 中国农业科学院植物保护研究所, 植物病虫害生物学国家重点实验室,北京 100193 |
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| 基金项目： | 国家“973”课题(2011CB100403、2010CB951503、2013CB127704);公益性行业(农业)科研专项(200903035);国家小麦产业技术体系岗位专家专项经费(CARS-03-04B) |
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| 摘 要： | 小麦条锈病由小麦条锈菌(Puccinia striiformi Westend.)引起,该病害发生范围广、流行频率高、危害损失重.小麦条锈菌侵染与繁殖均需要较低温度,过去研究表明,条锈菌在夏季最热旬均温23℃以下地区才能越夏1].近年调查研究发现,小麦条锈菌的越夏海拔下限明显降低,病菌在夏季最热旬的旬均温超过23℃的地区也能越夏.研究不同地区和不同年代小麦条锈菌群体对温度的敏感性,有助于了解温度对条锈菌群体进化的影响,明确在小麦条锈菌群体中是否产生了耐高温菌株,为小麦条锈病菌源区勘界、病害流行测报等提供科学依据.本文报道了对小麦条锈菌群体温度敏感性的初步研究结果.
1 材料与方法
1.1试验材料
1.1.1供试菌株采自全国不同流行区、不同年代的小麦条锈菌标样,经分离纯化后获得126个条锈菌菌株.
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| 关 键 词： | Puccinia striiformis Westend. temperature-specific adaption |
| 收稿时间： | 2012-04-21; |
Temperature-sensitivity of population of Puccinia striiformis Westend. |
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| ZHANG Jing-qiu
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LIU Bo
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CHEN Wan-quan
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LIU Tai-guo
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GAO Li.Temperature-sensitivity of population of Puccinia striiformis Westend.[J].Acta Phytopathologica Sinica,2013,43(1):88-90. |
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| Authors: | ZHANG Jing-qiu LIU Bo CHEN Wan-quan LIU Tai-guo GAO Li |
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| Institution: | Institute of Plant Protection,Chinese Academy of Agriculture Sciences,The State Key Lab for Biology of Plant Disease and Insect Pest,Beijing 100193,China |
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| Abstract: | The temperature-sensitivity of 126 isolates of Puccinia striiformis Westend. (Pst) sampled from different regions and periods was tested. The results showed that there existed a great ET50 (median effect temperature, which represents the temperature that is required to obtain 50％ of the maximum effect ) difference in Pst population tested, the average ET50 was 24.01℃ with the highest of 27.01℃ and the lowest of 18.46℃. On the whole, the Pst population sampled from warmer,lower elevation or latitude regions showed significant adaptation to warmer temperature. |
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| Keywords: | Puccinia striiformis Westend Puccinia striiformis Westend temperature-specific adaption |
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