| 疫霉菌对霜脲氰抗性遗传及对霜脲氰和甲霜灵的交互抗性 |
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| 引用本文： | 王源超,郑小波,华永刚,陆家云. 疫霉菌对霜脲氰抗性遗传及对霜脲氰和甲霜灵的交互抗性[J]. 植物保护, 1997, 23(1): 7-10 |
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| 作者姓名： | 王源超 郑小波 华永刚 陆家云 |
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| 作者单位： | 南京农业大学植保系 |
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| 摘 要： | 就疫霉菌对霜脲氰抗性的产生和遗传，以及疫霉菌对霜脲氰和甲霜灵的交互抗性进行了研究。结果表明，苎麻疫霉容易对霜脲氰产生抗药性突变，但抗性在连续３代单游动孢子分离过程中逐渐丧失。大雄疫霉对霜脲氰不易产生抗性突变，恶疫霉、大雄疫霉和苎麻疫霉对甲霜灵和霜脲氰不存在交互抗性
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| 关 键 词： | 疫霉菌 霜脲氰 甲霜灵 抗药性遗传 交互抗性 |
Inheritance of the Resistance of Phytophthora spp. to Cymoxanil and Its Cross resistance to Cymoxanil and Metalaxyl |
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| Wang Yuanchao Zheng Xiaobo Hua Yonggang Lu Jiayun. Inheritance of the Resistance of Phytophthora spp. to Cymoxanil and Its Cross resistance to Cymoxanil and Metalaxyl[J]. Plant Protection, 1997, 23(1): 7-10 |
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| Authors: | Wang Yuanchao Zheng Xiaobo Hua Yonggang Lu Jiayun |
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| Affiliation: | Department of Plant Protection;Nanjing Agricultural University 210095 |
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| Abstract: | The isolates of Phytophthora boehmeriae and P.megasperma were exposed to LBA agar amended with cymoxanil No cymoxanil resistant mutants were obtained in P.megasperma In P.boehmeriae, seven Cyrmutants of isolate JS2 from LBA agar amended with 50 μg/mL cymoxanil and one Cy rmutant of isolate JS5 from LBA agar amended with 100 μg/mL cymoxanil were obtained After subcultured in chemical free agar, only four Cyrmutants of isolate JS2 and one Cyrmutant of isolate JS5 could maintain the resistance to cymoxanil In the process of single zoospore isolated, the resistance to cymoxanil of Cyrmutants decreased gradually No obvious difference was found in the sensitivity to metalaxyl between Cyrmutants and their Cyrparents Similarly, no obvious difference in the sensitivity to cymoxanil between Mtrmutants and their Mtrparents The result suggested that no cross resistance between cymoxanil and metalaxyl in Phytophthora spp |
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| Keywords: | Phytophthora spp. cymoxanil metalaxyl resistant inheritance cross resistance |
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