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B型烟粉虱对三种寄主植物及其挥发物的行为反应
引用本文:曹凤勤,刘万学,范中南,万方浩,程立生.B型烟粉虱对三种寄主植物及其挥发物的行为反应[J].昆虫学报,2008,51(8):830-838.
作者姓名:曹凤勤  刘万学  范中南  万方浩  程立生
作者单位:1. 中国农业科学院植物保护研究所,北京,100081;海南大学环境与植物保护学院,海口,570228
2. 中国农业科学院植物保护研究所,北京,100081
3. 中国农业科学院农业环境与可持续发展研究所,北京,100081
4. 海南大学环境与植物保护学院,海口,570228
基金项目:国家重点基础研究发展计划(973计划)
摘    要:利用Y型嗅觉仪,测定了B型烟粉虱Bemisia tabaci(Gennadius)雌虫对3种寄主植物、挥发物提取液、挥发物标样以及寄主植物挥发物模拟样的行为反应,并比较鉴定寄主植物挥发物的组分和含量,以期明确植物挥发物在B型烟粉虱寄主定向行为中的作用。结果表明:1)番茄植株和甘蓝植株及其相应的挥发物提取物对烟粉虱雌成虫均具有显著的引诱作用,而辣椒植株和挥发物提取物的引诱作用不明显;3种寄主植物和挥发物提取物分别两两之间比较时,烟粉虱的选择行为均极显著地表现为番茄 > 甘蓝 > 辣椒。2)番茄、甘蓝和辣椒具有不同的挥发物化学图谱,且挥发物组分的相对百分含量差异很大;番茄挥发物总量远远大于甘蓝和辣椒;从组分来看,番茄挥发物中主要为萜烯类(89.8%),甘蓝挥发物中主要为烷烃类(53.0%)。3)8种寄主植物挥发物标样(10-1~10-6 μL/μL)中,除1,8-桉树脑始终对烟粉虱具有引诱作用外,丁子香酚、苎烯、里那醇和月桂烯则是分别在10-4~10-6,10-1~10-4,10-1~10-4和10-1~10-4μL/μL时,才具有引诱作用;α-蒎烯、顺-3-已烯-1醇则在高浓度下(10-1和10-2 μL/μL)对烟粉虱具有排斥作用,低浓度下对烟粉虱没有任何影响;正十二烷在任何浓度下对烟粉虱均没有任何作用。4)在辣椒上分别喷施番茄挥发物模拟样和甘蓝挥发物模拟样,均显著增加对烟粉虱的引诱作用,而在番茄上喷施辣椒挥发物模拟样则无明显增效作用。综合分析认为,挥发性物质在B型烟粉虱对不同寄主植物的选择偏好时具有重要的行为导向作用。

关 键 词:B型烟粉虱  寄主植物  挥发性化合物  寄主选择  行为反应  

Behavioural responses of Bemisia tabaci B-biotype to three host plants and their volatiles
CAO Feng-Qin,LIU Wan-Xue,FAN Zhong-Nan,WAN Fang-Hao,CHENG Li-Sheng.Behavioural responses of Bemisia tabaci B-biotype to three host plants and their volatiles[J].Acta Entomologica Sinica,2008,51(8):830-838.
Authors:CAO Feng-Qin  LIU Wan-Xue  FAN Zhong-Nan  WAN Fang-Hao  CHENG Li-Sheng
Abstract:Using Y-type olfactometer, behavior response of female Bemisia tabaci B biotype to three kinds of host plants, volatile extracts, volatile reference compounds, volatile ananogues were studied, and components and contents of volatiles in different host plants were compared as well. The results indicated that: 1) Strong behavior selection reaction of female adults of B. tabaci to tomato leaves and cabbage leaves, and their volatile extracts occured, respectively, whereas no significant behaviour selection to the pepper leaves and their extracts were found, respectively. When odors from the three host plants and their volatile extracts were comparatively tested, the female adults showed the strongest host preference to tomato, followed by cabbage, and then pepper leaves. 2) There were significant difference in volatile profile, components and contents among the three host plants. Volatile quantity of tomato leaves is much more than that of cabbage leaves and pepper leaves. Main components were terpene in volatile extract of tomato (89.8%), but hydrocarbon in volatile extract of cabbage (53.0%). 3) Among eight kinds of reference samples tested, 1,8-cineole always showed strong attractableness to female B. tabaci at five concentration levels. Eugenol, limonene, linanlool and myrcene showed strong attractableness to female B. tabaci just at appropriate concentrations. However, both α-pinene and Cis-3-Hexen-l-of displayed repellency to B. tabaci at high concentrations, but had no effect at low concentrations. Dodecane had no distinct effect on B. tabaci at any concentrations. 4)Peper plants applied with tomato and cabbage volatiles analogues, respectively, could significantly attract B. tabaci adults. However, there was no significant difference in attractableness to female B. tabaci between tomato plants applied with pepper volatiles analogues and CK. The results suggest that volatile infochemicals from host plants play important roles in orientating behavior of Bemisia tabaci B-biotype.
Keywords:Bemisia tabaci(Gennadius) B-biotype  host plant  volatile  host selection  behavioral responses
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