| 广西玉米纹枯病菌的菌丝融合群及其对杀菌剂的敏感性 |
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| 引用本文： | 蒙姣荣,张超冲,李界秋,韦刚. 广西玉米纹枯病菌的菌丝融合群及其对杀菌剂的敏感性[J]. 勤云标准版测试, 2006, 0(7) |
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| 作者姓名： | 蒙姣荣 张超冲 李界秋 韦刚 |
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| 作者单位： | 广西大学农学院 广西南宁530004 |
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| 摘 要： | 从广西21个县(市)的采集玉米纹枯病标本,经分离纯化后获得126个丝核菌属菌株,其中多核丝核菌121株,双核丝核菌5株。菌丝融合群测试结果表明,多核丝核菌分别属于AG-1-IA(85.17%)、AG-1-IB(1.59%)、AG-4(3.87%)和AG-5(4.76%)融合群,双核丝核菌分别属于AGBb(2.38%)和AGK(1.59%)融合群。首次从玉米上分离到双核丝核菌AGBb融合群。不同融合群对4种供试杀菌剂的敏感程度存在明显的差异。AGB(b)、AG和AG-1-IB对供试杀菌剂多表现为高度的敏感性,AG-4和AG-5融合群则表现为中度的敏感性,而AG-1-IA敏感性最小。
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| 关 键 词： | 玉米纹枯病 丝核菌属 菌丝融合群 药剂敏感性 |
The Anastomosis Groups of Corn Sheath Blight in Guangxi and Their Sensitivity to Fungicides |
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| Meng Jiaorong,Zhang Chaochong,Li Jieqiu,Wei Gang. The Anastomosis Groups of Corn Sheath Blight in Guangxi and Their Sensitivity to Fungicides[J]. , 2006, 0(7) |
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| Authors: | Meng Jiaorong Zhang Chaochong Li Jieqiu Wei Gang |
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| Affiliation: | College of Agriculture, Guangxi University, Nanning Guangxi 530004 |
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| Abstract: | One hundred and twenty-six isolates of Rhizoctonia spp. were obtained from tissues of corn sheath blight in 21 counties of Guangxi. They were divided into series of Rhizoctonia; multinucleate and binucleate series. According to the hyphal fusion with the international standard isolates of anastomosis groups(AGs)of Rhizoctonia, the multinucleate belong to AG-1-IA(85.17% ), AG-1-IB(1.59%), AG-4(3.87% )and AG-5 4.76%,the binucleate series belong to AG-Bb(2.38%) and AGK((1.59%)), respectively. The isolates of AGBb were first found in corn. There were significant differences in sensitivity to the tested fungicides among different AGs. The isolates of AGB(b), AGK and AG-1-IB had the strongest sensitivity, the isolates of AG-4 and AG-5 were moderate, and the isolates of AG-1-IA had the least sensitivity to the tested fungicides |
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| Keywords: | Corn sheath blight Rhizoctonia Anastomosis group Sensitivity to fungicides |
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