The present results indicated that the trehalase may be important in the enlargement of host plant species of B. tabaci B-biotype and in the competition between B. tabaci B-biotype and T vaporariorum.

• 海藻糖酶在B型烟粉虱寄主谱扩张及与温室粉虱的竞争适应过程中可能起重要作用。