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大豆疫霉菌抗甲霜灵特性研究
引用本文:左豫虎,侯巨梅,康振生,陈长卿,黄丽丽.大豆疫霉菌抗甲霜灵特性研究[J].菌物学报,2005,24(3):422-428.
作者姓名:左豫虎  侯巨梅  康振生  陈长卿  黄丽丽
作者单位:1. 西北农林科技大学植保学院,陕西,杨凌,712100;黑龙江八一农垦大学植物科技学院,大庆,163319
2. 黑龙江八一农垦大学植物科技学院,大庆,163319
3. 西北农林科技大学植保学院,陕西,杨凌,712100
基金项目:国家重点基础研究发展规划(2002CB111406);国家杰出青年基金项目(30125031);西北农林科技大学“创新团队”项目
摘    要:大豆疫霉Phytophthorasojae易对甲霜灵产生抗性,从大豆疫霉野生型菌株可诱变筛选到对甲霜灵有抗性的菌株Mtr。Mtr抗性菌株的抗性水平可达野生型单游动孢子菌株的870倍以上。Mtr性状在无性后代稳定遗传,在游动孢子后代连续三代未发生抗药性分离。大豆疫霉Mtr性状的保持对甲霜灵没有表现依赖性。Mtr单游动孢子菌株在不含甲霜灵的胡萝卜培养基(CA)平板上培养30d后对甲霜灵的抗性没有下降,其单游动孢子后代也未出现抗药性分离。

关 键 词:抗甲霜灵菌株  抗药性  遗传
文章编号:1672-6472(2005)03-0422-0428
收稿时间:2005-02-22
修稿时间:2005-04-27

STUDIES ON RESISTANCE OF PHYTOPHTHORA SOJAE TO METALAXYL
Authors:ZUO Yu-Hu  HOU Ju-Mei  KANG Zhen-Sheng  CHEN Chang-Qing  HUANG Li-Li
Abstract:Phytophthora sojae developed the resistance to metalaxyl easily. The metalaxyl-resistant isolate (Mtr) of P. sojae was found in the wild-type isolates of P. sojae after treatment with metalaxyl. The resistance level of the metalaxyl-resistant isolate was over 870 times higher than that of the single zoospore progeny isolates of the wild-type parent isolate. The resistance to metalaxyl of Mtr isolate was inherited stably, and they did not show variation from the first zoospore progeny to the third zoospore progeny. The maintenance character of Mtr was not depended on metalaxyl. The resistance to metalaxyl of Mtr single zoospore isolate was not reduced and their zoospore progeny were not varied after 22-30 days growth on the metalaxyl free carrot agar medium (CA).
Keywords:metalaxyl-resistantisolate  fungicide-resistance  inheritance
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