论文部分内容阅读
在害虫防治中,昆虫对化学农药的抗性已发展成为十分严重的问题。生物杀虫剂的抗性问题直到最近几年才有所察觉,今天仍有许多人认为Bacillus thuringensis(简称Bt)等生物制剂似乎不存在这个问题,事实上,最近越来越多的数据显示,Bt杀虫剂也存在抗性发展的趋向。在实验室条件下,目前已发现印度谷螟(Plodia interpunctella)、粉斑螟(Cadra cautella)、烟青虫(Heliothis virescens)对某些Bt杀虫晶体蛋白(ICP)产生明显抗性。Tabashnik等在夏威夷的田间应用中证实,小菜蛾(Plutell
In pest control, insect resistance to chemical pesticides has become a very serious problem. The problem of biopesticide resistance has not been noticed until recently, and many people today still do not seem to have the problem with biological agents such as Bacillus thuringensis (Bt). In fact, more and more recent data show that, Bt pesticides also tend to develop resistance. Under laboratory conditions, it has now been found that Plodia interpunctella, Cadra cautella, and Heliothis virescens are significantly resistant to certain Bt insecticidal crystal proteins (ICPs). Tabashnik et al. Confirmed field application in Hawaii, Plutella xylostella (Plutell