两种关键花香挥发物对棉铃虫的信息多义性  

Semiochemical parsimony of two key floral volatiles to Helicoverpa armigera

作　　者：李洋洋[1] 王珏[1] 原国辉[1] 郭线茹[1] 李慧玲[1] 李为争[1] 

机构地区：[1]河南农业大学植物保护学院,郑州450002

出　　处：《生态学杂志》2014年第2期340-345,共6页Chinese Journal of Ecology

基　　金：河南省烟草公司科技项目(2011M04);国家公益性行业(农业)专项(201203036)资助

摘　　要：为了探明花香挥发物的信息多义性,作者测试了2种关键花香挥发物(苯乙醛和乙酸苯甲酯)对棉铃虫成虫产卵、性信息素诱捕和初孵幼虫趋向行为的影响。结果表明:在苯乙醛和乙酸苯甲酯组成的二元混剂与番茄、辣椒、棉花、烟草和玉米叶片共存条件下,花香挥发物上的落卵量与除了番茄外的其他寄主叶片气味源没有显著差异,证实其对雌成虫有较强引诱产卵作用;花香引诱剂能显著增加棉铃虫性信息素的野外捕获量,并且银纹夜蛾、小地老虎、甜菜夜蛾、亚洲玉米螟、稻纵卷叶螟和甜菜白带螟对花香引诱剂的趋向并不受棉铃虫性信息素存在的影响,说明花香引诱剂与棉铃虫性信息素具有良好兼容性。此外,花香挥发物还能增强棉铃虫初孵幼虫对烟草叶碟的识别能力。总之,花香挥发物对棉铃虫有多方面的生态学功能,这种信息化合物的多义性可能具有自然选择方面的优势。To elucidate the parsimony of floral volatiles to Helicoverpa armigera, we determined the effects of two key nora[ volatiles, phenylaeetaldehyde and benzyl acetate, on the ovipositional choice, sex pheromone trapping, and neonatal approaching behavior. The oviposition bioassay shows that the percent of eggs deposited by mated females on the gauze covered on the binary blend of phenylacetaldehyde and benzyl acetate did not differ from those covered on all the host leaves （hot pepper, tobacco, cotton, and maize） but tomato leaves, suggesting that these floral volatiles had fairly strong ovipositional attractiveness. The addition of floral attractant to 1t. ar- migera sex pheromone could enhance the field trap catch of H. armigera moths, and the trapping of other moth species, such as Argyrogramma agnate, Agrotis ypsilon, Spodoptera exigua, Ostrin- ia nubilalis, Cnaphalocrocis medinalis, and Hymenia re-curvalis, was not influenced by the pres- ence of H. armigera sex pheromone, indicating that the floral attractant had good compatibility with H. armigera sex pheromone. Additionally, the floral volatiles could enhance the perception of neonates to tobacco leaf discs. Taken together, floral volatiles have multiple ecological func- tions to H. armigera, and this semioehemieal parsimony might be favored by natural selection.

关 键 词：棉铃虫 信息多义性 花香挥发物 

分 类 号：S435.622[农业科学—农业昆虫与害虫防治]