| 重庆地区马铃薯晚疫病菌(Phytophthora in festans)对甲霜灵抗性及抗性水平测定 |
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| 引用本文： | 毕朝位,杜喜翠,车兴壁,马金成,王中康. 重庆地区马铃薯晚疫病菌(Phytophthora in festans)对甲霜灵抗性及抗性水平测定[J]. 中国马铃薯, 2002, 16(2): 70-72 |
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| 作者姓名： | 毕朝位 杜喜翠 车兴壁 马金成 王中康 |
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| 作者单位： | 1. 西南农业大学植保系,重庆,400716
2. 重庆市植保站,重庆,400020 |
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| 摘 要： | 20 0 1年从北碚、云阳、开县、万州、巫溪和忠县等地采集马铃薯晚疫病病叶 ,共分离得 94株致病疫霉。用生长速率法测定其对甲霜灵的抗性和抗性水平 ,结果表明 :2 0 2 %的菌株表现为抗性 ,11 7%的菌株表现为中抗 ,6 8 1%的菌株表现为敏感 ;以菌株PBB 110 2为敏感对照 ,所测定的 2株抗性菌株的抗性水平达 10 6倍以上 ,各地菌株抗性表现与菌株来源地的施药水平密切相关 ,并对抗药性不同的地区提出了不同的用药策略
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| 关 键 词： | 致病疫霉 甲霜灵 抗药性 |
| 文章编号： | 1001-0092(2002)02-070-04 |
| 修稿时间： | 2001-12-10 |
RESISTANCE AND RESISTANT LEVEL OF PHYTOPHTHORA INFESTANS TO METALAXYL IN CHONGQING |
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| BI Chao wei ,DU Xi cui ,CHE Xing bi ,MA Jin cheng ,WANG Zhong kang. RESISTANCE AND RESISTANT LEVEL OF PHYTOPHTHORA INFESTANS TO METALAXYL IN CHONGQING[J]. Chinese Potato, 2002, 16(2): 70-72 |
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| Authors: | BI Chao wei DU Xi cui CHE Xing bi MA Jin cheng WANG Zhong kang |
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| Affiliation: | BI Chao wei 1,DU Xi cui 1,CHE Xing bi 2,MA Jin cheng 1,WANG Zhong kang 1 |
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| Abstract: | The causal agent of Late Blight of Potato(Phytophthora infestans)was isolated from potato leaves collected from Beibei, Yunyang, Kaixian,Wanzhou,Wuxi and Zhongxian in 2001. Total 94 isolates were obtained and tested for fungicide resistance and resistant level to metalaxyl by measuring the growth of the fungal colony. Results showed that 20 2% isolstes are resistant,11 7%isolates are intermediate in resistance and 68 1%isolates are sensitive to metalaxyl. The resistant levels of the two tested resistant isolates are much higher than that of the metalaxyl -sensitive isolate(PBB-1102).The resistant occurrence of isolates from different places is closely interrelated to the use of metalaxyl in these areas. The strategy for applying pesticide was put forward in connection with these areas. |
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| Keywords: | Phytophthora infestans matalaxyl fungicide resistance |
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