摘要
【目的】随着Q型和B型烟粉虱Bemisia tabaci(Gennadius)在全世界范围内的传播和入侵,两种入侵烟粉虱的发生危害和种群扩张越来越受到人们的关注。本文对2010—2013年江苏省内烟粉虱的发生危害程度及其生物型的分布进行了全面的调查研究。【方法】应用室内镜检鉴定烟粉虱的发生危害程度,同时结合mt COⅠ分子标记快速检测法鉴定烟粉虱的生物型。【结果】从时间来看,烟粉虱的发生危害程度在2011年最严重,而在2013年最低,呈"先上升后下降"的趋势。从不同地区来看,苏南和苏北地区呈现出"先上升后下降"的趋势,而苏中地区与之相反。从寄主来看,烟粉虱在茄子,黄瓜和南瓜上的发生危害程度最严重。【结论】烟粉虱在江苏省内的发生危害程度因时间,地区和寄主的不同而差异显著,这种差异与烟粉虱不同生物型之间的竞争取代没有直接联系。虽然Q型烟粉虱在江苏省内占据了优势地位,但是B型烟粉虱在苏南和苏北地区仍然占据了一定的比例,并且有逐步上升的趋势。
[Objectives] Biotypes Q and B are two of the most prevalent cryptic species of Bemisia tabaci （Gennadius） （Hemiptera： Aleypdidae） and have consequently been the focus of considerable research as this pest has spread rapidly around the world. In an extensive field survey of the B. tabaci complex throughout Jiangsu Province from 2010 to 2013, we investigated the occurrence and distribution of these two whiteflies in Jiangsu Province. [Methods] Microscopic examination was used to detect crop damage caused by B.tabaci, and a rapid test for identifying biotypes was conducted based on the mtCO I gene. [Results] Crop damage first increased in 2011 then decreased in 2013. Similarly, damage also first increased then declined in South and North Jiangsu, but in the Central Jiangsu the opposite trend was apparent. Moreover, damage to eggplant, cucumber and pumpkin crops was relatively high. [Conclusion] The results show that the abundance of B. tabaci differs from year to year in different regions and on different hosts. The resultant differences in crop damage have no direct relationship to the population dynamics of the two whitefly dominant biotype in Jiangsu Province, we still could detect southern and northern Jiangsu. biotypes. Although biotype Q has replaced biotype B as the a small, but gradually increasing, proportion of biotype B in
出处
《应用昆虫学报》
CAS
CSCD
北大核心
2015年第1期124-134,共11页
Chinese Journal of Applied Entomology
基金
公益性行业(农业)科研专项(201303019
200803005)
关键词
烟粉虱
生物型
发生危害
取代
江苏
Bemisia tabaci, biotype, occurrence and damage, Jiangsu Province
