土耳其斯坦叶螨对棉花不同品种(系)的寄主选择性及机理初步研究  

Host Preference and Mechanism of Tetranychus turkestani (Vgorag&Nikolski) to Different Cotton Varieties

作　　者：袁辉霞[1] 张建萍[1] 李庆[1] 

机构地区：[1]石河子大学农学院植保系,新疆石河子832003

出　　处：《新疆农业科学》2009年第6期1258-1262,共5页Xinjiang Agricultural Sciences

基　　金：国家"十一五"支撑项目"棉花持续优质高效生产技术体系研究与示范"(2006BAD21B02-3);新疆生产建设兵团博士基金项目"滴灌条件下棉花主要害虫种群动态变化的研究"(05JJ01)

摘　　要：【目的】利用叶螨对不同品种的选择性,综合防治棉叶螨。【方法】将土耳其斯坦叶螨对新疆棉花主栽品种(系)的寄主选择性进行评价。【结果】土耳其斯坦叶螨对棉花18个不同品种(系)寄主选择性存在显著差异,对新海21号选择性最弱;对297-5、81-3等的选择性较强。在此基础上筛选出6个供试品种进行形态学、生化特性测定。【结论】叶片茸毛,可溶性糖含量与叶螨选择寄主无显著相关性;叶片蜡质、棉酚、黄酮含量越高,土耳其斯坦叶螨对其选择性越弱;单宁含量高,叶螨对该品种选择性越强;品种叶绿素含量越高,受螨害就越轻。【Objective and Method】The host preferences of T.turkestani to different cotton varieties in Xinjiang were studied.【Result】The results showed that the host preferences of T.turkestani to eighteen cotton varieties had significant difference.T.turkestani was not attracted evidently by Xinhai 21 but attracted strongly by 297-5,81-3.On this basis,six varieties were selected for biochemical test,that indicated that there was no significant correlation between host preferences of T.turkestani.【Conclusion】The higher the content of leaf wax,cotton phenol and brassis,the weeker the preference of T.turkestani is;the higher the content of tannin is,the stronger the preference of T.turkestani to the variety is;the higher the chlorophyll content the variety has,the less injury it suffers.

关 键 词：棉叶螨 寄主选择性 选择机理 

分 类 号：S435.622[农业科学—农业昆虫与害虫防治]