云南思茅和开远稻褐飞虱致害特性比较  

Studies on the virulence characteristics of the rice brown planthopper collected from Simao and Kaiyuan,Yunnan Province

作　　者：黄凤宽[1] 韦素美[1] 黄所生[1] 罗善昱[1] 李青[1] 

机构地区：[1]广西农业科学院植物保护研究所,广西南宁530007

出　　处：《广西农业生物科学》2004年第4期278-281,共4页Journal of Guangxi Agricultural and Biological Science

基　　金：广西青年科学基金(桂科青0339018);广西自然科学基金(桂科自0007002);"十五"国家科技攻关计划(2001BA509B0208)资助项目

摘　　要：对云南思茅和开远的稻褐飞虱致害特性研究结果表明,思茅和开远虫源在群体测定时分别表现为孟加拉型和生物型 的致害特征。开远稻褐飞虱若虫在IR36、ASD7上的存活率均小于38.00%;思茅虫源在IR36、ASD7上的存活率均大于52.00%。若虫发育历期,开远虫源在RathuHeenati上最长,而思茅虫源在Ptb33上最长,两地虫源在TN1、IR26、Mudgo、ASD7上均差异不显著。开远和思茅的稻褐飞虱若虫对不同品种具有不同的取食选择性。若虫取食的选择性同其对不同品种的致害性的表现并非完全一致。结果说明思茅和开远稻褐飞虱的致害特性不一样。两地稻褐飞虱可能来自不同虫源地。The virulence characteristics of the rice brown planthopper(BPH) collected from Simao and Kaiyuan,Yunnan Province were studied.The results indicated that the virulence characteristics of the BPH collected from Simao and Kaiyuan showed the virulence characteristics of biotype Bangladesh and biotypeⅡ in bulk test respectively.The survival rate of nymph of the BPH collected from Kaiyuan fed on IR36 and ASD7 was less than 38.00%;that of the BPH collected from Simao fed on IR36 and ASD7 was more than 52.00%.The longest development duration of nymph was the BPH collected from Kaiyuan fed on Rathu Heenati,so was the BPH collected from Simao fed on Ptb33,there were no significant differences in the development durations of nymph of the BPH collected from Simao and Kaiyuan fed on TN1,IR26,Mudgo,ASD7. The feeding selectivities of nymphs of the BPH collected from Simao and Kaiyuan were different.The feeding selectivities of nymphs were not absolutely conformed to their virulence.It indicated that the virulence characteristic of the BPH collected from Simao and Kaiyuan was different.The BPH of Simao and Kaiyuan possibly comes from different sources.

关 键 词：稻褐飞虱 致害性 虫源 

分 类 号：S435.112.5[农业科学—农业昆虫与害虫防治]