5种番茄品种对烟粉虱寄主选择、生长发育及存活率的影响

为了探明烟粉虱在不同寄主上的适合度,对烟粉虱在5种番茄品种上的选择性、发育历期及存活率等指标进行了比较.结果表明:烟粉虱在5个不同番茄品种上选择性差异具有统计学意义.其中,烟粉虱偏好在粉都53番茄品种上取食,对洛番9号、金粉101、越夏红有中等偏好性,对金鹏8号无明显偏好性.烟粉虱在5个番茄品种上的发育历期、存活率差异也具有统计学意义.烟粉虱在粉都53、洛番9号、金粉101、越夏红、金鹏8号上的发育历期依次延长,而在洛番9号上的烟粉虱存活率最高,在金粉101上的存活率最低.不同寄主对烟粉虱的适合度影响较大,在对烟粉虱的抗性上差异较为明显.

Host Selection, Growth and Survival Rate of Bemisia tabaci on Five Tomato Varieties

To explore the fitness of tobacco whitefly (Bemisa tabaci) feeding on different hosts, the feeding preference, development duration and survival rate on 5 tomato cultivars were compared under laboratory conditions. The results showed that the selectivity of B. tabaci to these 5 tomato cultivars had significant difference. B. tabaci showed highest feeding preference on cv. Fendu 53, less feeding preference on Luofan 9, Jinfen 101 and Yuexiahong, and least feeding preference on Jinpeng 8. There were significant differences in the developmental duration and survival rate of B. tabaci when feeding on these 5 tomato cultivars. The developmental duration of B. tabaci was prolonged on Fendu53, Luofan 9, Jinfen 101, Yuexiahong and Jinpeng 8, respectively. The survival rate of B. tabaci was the highest on Luofan 9 and the lowest on Jinfen 9. These results showed that the resistance of different tomato cultivars to B. tabaci was significantly different, and feeding on different host plants had a great impact on the fitness of B. tabaci.