【摘 要】
：
The most provocative aspect of this study is its original findings on the toxicity of diphenyl-pentenone(1,5-diphenyl-2-penten-1-one, DP) against the three kind
【机 构】
：
National Key Lab. of Grassland Biocontrol Engineering
论文部分内容阅读
The most provocative aspect of this study is its original findings on the toxicity of diphenyl-pentenone(1,5-diphenyl-2-penten-1-one, DP) against the three kinds of aphids (Macrosiphum granarium Kirby, Lipaphis erysimi(kaltenbach), Schizaphis aurantiae(Fosc.)and the inhibitory effects of DP against detoxification enzyme system of the aphid (S aurantiae). The result of bioassay in the laboratory shows that the product has strong contact activity and very good antifeeding activity, with higher efficacy than anabasine and nicotine, two botanical aphidicides. The median lethal concentrations of the three products against the apterous adult (M granarium) are 175.85, 217.23 and 245.22 mg/L, respectively, at 24 h of pest treatment. DP is inferior to methomyl in contact assay but superior in antifeeding activity assay against the three aphides. DP has strong inhibitory effects on nonspecific esterases, carboxylesterase of aphid (S aurantiae), but it can not inhibit AchE. DP also has strong inhibitory effects on glutathione S-transferase of the aphid.
其他文献
The optimum state filter and fixed-interval smoother and the optimum deconvolution algorithm for system with multiplicative noise are derived upon the condition
Objective: To observe and compare the effect of traditional Chinese medicine (TCM) combined with chemotherapy (CT) on immune function and quality of life (QOL)o
分析了我国科技期刊编辑与适应新《著作权法》有关的某些心理状态,指出了编辑在工作中的若干违背新《著作权法》相关规定的心态和作法,浅析了这些不良心态的产生原因;讨论了
Specific cellular immune tolerance may be essential for successful xenotransplantation in humans. Thymectomized (ATX), T and NK cell-depleted immunocompetent mi
以《水泥》杂志为例,从杂志上网、稿件的网络化管理及广告的数据库管理三方面入手,谈到了我国科技期刊的网络化建设与管理,从而实现办公自动化、效率化。
Taking “Cement”
科研评价以科研表象为基础.在提高研究系统的表象质量的过程中,无法避免与这些研究系统迥异的接收系统为指标赋予意义.由于决策影响到所要探究的系统,这种结构产生的张力正在
Transplant rejection, like tolerance, is a T cell-dependent event. There is compelling evidence to suggest that induction of transplant tolerance is an actively
Summary: The effects of different concentrations of vascular endothelial cell growth factor (VEGF)on the fibrovascular ingrowth into rabbits hydroxyapatite orbi
Summary: Whether surfactant protein B (SP-B)-18A/C and 1580C/T polymorphism were associated with susceptibility to chronic obstructive pulmonary disease (COPD)
Summary: The changes of tumor necrosis factor-α (TNF-α) and brain ultrastructure during cardiopulmonary resuscitation and the effects of ulinastation injectio