牧草盲蝽对七种寄主植物的趋性行为反应研究

Taxis Responses of Lygus pmtensis to 7 Different Host Plants

【目的】研究牧草盲蝽对7种不同寄主植物的趋性行为。【方法】以牧草盲蝽为对象,通过Y型嗅觉仪及直接测定法,测定其对7种寄主植物的趋性行为反应。【结果】牧草盲蝽对灰绿藜及木地肤的选择性明显高于其它5种供试植物,选择反应率分别为64%和63%,其趋性程度也达到了显著水平;对棉花的趋性程度明显高于花椰菜、小白菜、田旋花三种供试植物,选择反应率均高于60%,均达到了显著水平;棉花与苜蓿二者之间的差异不显著。【结论】寄主植物挥发物在牧草盲蝽成虫选择寄主植物过程中起着重要的作用。

[ Objective] To make clear the taxis response of Lygus pmtensis to seven kinds of host plants. [ Method ] The taxis behavior of Lygus pmtensis to seven kinds of host plants was determined by Y - tube olfae- tometer and direct measurement. [ Result ] The selectivity of Lygus pmtensis on Chenopodium glaucurn and Kochia prostrata was obviously higher than that of other five kinds of plants and selection response percentage were 64% and 63%, and the taxis degree reached significant level. The taxis degree on cotton was obviously higher than that on Brassica oleracea, Brassica chinensis level, selection response percentage were higer than 60% and Convolvulus arvense and reached the significant There was no obvious difference between the cotton and Alfalfa. [Condusion] Host plant volatiles play an important role in the selection of host plant Lygus prntensis adult.