温室白粉虱对几种园艺植物的偏好性

温室白粉虱Trialeurodesvaporariorum是世界性害虫,每年都造成巨大的经济损失。研究了温室白粉虱在多种园艺植物混栽温室内对不同植物的选择性,结果表明在2 0种常见蔬菜和花卉中,可危害其中1 3种;温室白粉虱对其中6种寄主植物(旱金莲、一品红、菊花、番茄、小白菜和羽叶甘蓝)的选择性有显著差异,其种群数量为旱金莲和番茄显著多于小白菜、一品红和菊花,羽叶甘蓝显著少于其它5种植物;不同的虫态之间排序有小变动;温室白粉虱在番茄植株上部的垂直分布表现为卵和成虫在第3叶居多,若虫在第5叶居多,伪蛹在第9叶居多。

Host preference of greenhouse whitefly (Trialeurodes vaporariorum ) for several horticultural plants in greenhouse

The greenhouse whitefly Trialeurodes vaporariorum is a global pest causing enormous economic losses. The host preference of the greenhouse whitefly for horticultural plants was studied. Results showed that 13 out of 20 species of plants were attacked by T. vaporariorum. The whitefly showed significant difference on hosts preference among 6 host plants, tropaeolum (Tropaeolum majus), tomato (Lycoperisicon esculentu), Chinese mustard (Brassica chinensis), common poinsettia (Euphorbia pulcherrima), common chrysanthemum (Dendranthema morifolium), and collard (B. oleracea var. acephala). The pest populations in tropaeolum and tomato were more than those in Chinese mustard, common poinsettia, and common chrysanthemum; there was a smallest population in collard. With regard to the vertical distribution of T. vaporariorum on the upside of the tomato, the most of eggs, larvae, pupae and adults were located in the third leaf, the fifth leaf, the ninth leaf and the third leaf, respectively.