Investigation on Host Species and Damage Degree of Bemisia tabaci (Gennadius) in Shaanxi Area.

The host plants of Bemisia tabaci (Gennadius) in Shaanxi were investigated, and its damage degree was evaluated by hazard index in 2013 and 2014. There were 73 species (variants) of host plants of B. tabaci belonging to 28 families, mainly concentrated in Cucurbitaceae, Cruciferae, Solanaceae, Laguminosae and Malvaceae. There were seven species of vegetables that suffered the damage of grade 4. B. tabaci was more serious in southern Shaanxi and lighter in northern Shaanxi. According to the distribution of host plants, the occurrence status of B. tabaci in Shaanxi Province was analyzed and its development tendency was predicted. [ABSTRACT FROM AUTHOR]