Objective] The effects of four QoI fungicides on potato and tomato and cumumber quality and yield formation under disease-free conditions were studied in order to research the physiological effects of four QoI fungici...Objective] The effects of four QoI fungicides on potato and tomato and cumumber quality and yield formation under disease-free conditions were studied in order to research the physiological effects of four QoI fungicides on these fruit veg-etables and explore the range of minium dose for the obvious physiological effect and the dose for the maximum effect. [Method] The effects of four strobilurin fungi-cides on yield formation and quality were studied under disease-free conditions in the field. Two applications of each strobilurin fungicide were designed. The yield and commercial ratio for each application were investigated. [Results] The minimum dose for the obvious physical effect on potato and tomato and cucumber was lower than 133 mg/L , the dose for maximum effect on patoto and cucumber of the four stro-bilurin fungicides maybe also lower than 667 mg/L. The dose of fenaminstrobin and pyraoxystrobin for maximum effect on tomato maybe also lower than 667 mg/L. [Conclusion] The study suggested that enotroburin, fenaminstrobin, pyrametostrobin and pyraoxystrobin were able to increase the yield and ratio of high quality potato and cucumber and tomato.展开更多
S trobilurin类杀菌剂是在具有杀菌活性的天然β-甲氧基丙烯酸酯衍生物的基础上研发出来的,具有广谱、高效、安全的特点。主要以粘噻唑为例综述了该类杀菌剂作用靶标及作用位点的研究过程及最新进展。生化作用机理的研究明确了粘噻唑作...S trobilurin类杀菌剂是在具有杀菌活性的天然β-甲氧基丙烯酸酯衍生物的基础上研发出来的,具有广谱、高效、安全的特点。主要以粘噻唑为例综述了该类杀菌剂作用靶标及作用位点的研究过程及最新进展。生化作用机理的研究明确了粘噻唑作用于线粒体呼吸链bc1复合物中的细胞色素b及铁硫蛋白,阻止了从细胞色素b到细胞色素c1的电子传递,从而抑制线粒体的呼吸作用;蛋白质晶体学研究明确了粘噻唑的作用位点(Qo位点)是通过氢键与铁硫蛋白及细胞色素b的残基结合的。其他strobilurin类杀菌剂和粘噻唑具有相同的靶标,但由于各化合物之间存在一定的结构差异,其具体作用位点亦有一定的差别。展开更多
A number of novel strobilurin analogues containing substituted N-phenylpyrimidin-2-amines were synthesized. The structures of these new compounds were confirmed by ^1H NMR, IR and elemental analysis. Biological evalua...A number of novel strobilurin analogues containing substituted N-phenylpyrimidin-2-amines were synthesized. The structures of these new compounds were confirmed by ^1H NMR, IR and elemental analysis. Biological evaluation in the greenhouse showed several compounds have good fungicidal activities at 25 mg/L.展开更多
文摘Objective] The effects of four QoI fungicides on potato and tomato and cumumber quality and yield formation under disease-free conditions were studied in order to research the physiological effects of four QoI fungicides on these fruit veg-etables and explore the range of minium dose for the obvious physiological effect and the dose for the maximum effect. [Method] The effects of four strobilurin fungi-cides on yield formation and quality were studied under disease-free conditions in the field. Two applications of each strobilurin fungicide were designed. The yield and commercial ratio for each application were investigated. [Results] The minimum dose for the obvious physical effect on potato and tomato and cucumber was lower than 133 mg/L , the dose for maximum effect on patoto and cucumber of the four stro-bilurin fungicides maybe also lower than 667 mg/L. The dose of fenaminstrobin and pyraoxystrobin for maximum effect on tomato maybe also lower than 667 mg/L. [Conclusion] The study suggested that enotroburin, fenaminstrobin, pyrametostrobin and pyraoxystrobin were able to increase the yield and ratio of high quality potato and cucumber and tomato.
文摘A number of novel strobilurin analogues containing substituted N-phenylpyrimidin-2-amines were synthesized. The structures of these new compounds were confirmed by ^1H NMR, IR and elemental analysis. Biological evaluation in the greenhouse showed several compounds have good fungicidal activities at 25 mg/L.
