Srinivasan R
AVRDC - The World Vegetable Center, 60 Yi Ming Liao, Shanhua, Tainan 74151, Taiwan.
J Invertebr Pathol. 2008 Jan;97(1):79-81. doi: 10.1016/j.jip.2007.06.005. Epub 2007 Jul 4.
Baseline susceptibility of legume pod borer (LPB) to the insecticidal crystal proteins (ICPs) from Bacillus thuringiensis, viz, Cry1Aa, Cry1Ab, Cry1Ac, Cry1Ca and Cry2Aa was assessed in Taiwan. Insect bioassays were performed by incorporating the Bt delta-endotoxins into the LPB artificial diet. The efficacy of different Bt delta-endotoxins against second instar larvae of LPB showed that the toxin Cry1Ab was the most potent toxin (LC(50) 0.207ppm), followed by Cry1Ca, Cry1Aa, Cry2Aa and Cry1Ac in descending order, with LC(50)s 0.477ppm, 0.812ppm, 1.058ppm and 1.666ppm, respectively. Hence, Cry1Ab and/or Cry1Ca toxins would provide effective control of early larval stages of LPB.
在台湾评估了豆荚螟（LPB）对苏云金芽孢杆菌杀虫晶体蛋白（ICP），即Cry1Aa、Cry1Ab、Cry1Ac、Cry1Ca和Cry2Aa的基线敏感性。通过将Btδ-内毒素掺入LPB人工饲料中来进行昆虫生物测定。不同Btδ-内毒素对LPB二龄幼虫的功效表明，毒素Cry1Ab是最有效的毒素（LC(50)为0.207ppm），其次是Cry1Ca、Cry1Aa、Cry2Aa和Cry1Ac，LC(50)分别为0.477ppm、0.812ppm、1.058ppm和1.666ppm。因此，Cry1Ab和/或Cry1Ca毒素将有效控制豆荚螟幼虫早期阶段。
