CAJ | 학술논문

以嘧菌酯为对照药剂,研究了6种中国自主创制的QoI类杀菌剂对水稻稻瘟病菌Magnapothe grisea不同发育阶段的影响.结果表明,供试药剂对水稻稻瘟病菌菌丝扩展均表现出良好的抑制作用,EC_(50)值为0.10 ～2.89 μg/mL;对病菌产孢量和孢子萌发的抑制作用明显,EC_(50)值分别为0.10 ～4.92和0.75 ～7.14 μg/mL.在1.0 μg/mL的含药平板上,烯肟菌酯、嘧菌酯、丁香菌酯、SYP-2815对水稻稻瘟病菌产孢量的抑制率均大于90%;对病菌孢子芽管伸长也具有一定的抑制作用,EC_(50)值为1.67 ～34.76 μg/mL.在1.0 μg/mL的含药平板上,7种QoI类药剂对水稻稻瘟病菌菌丝形态无明显影响,但可明显抑制其黑色素的产生.
이밀균지위대조약제,연구료6충중국자주창제적QoI류살균제대수도도온병균Magnapothe grisea불동발육계단적영향.결과표명,공시약제대수도도온병균균사확전균표현출량호적억제작용,EC_(50)치위0.10 ～2.89 μg/mL;대병균산포량화포자맹발적억제작용명현,EC_(50)치분별위0.10 ～4.92화0.75 ～7.14 μg/mL.재1.0 μg/mL적함약평판상,희우균지、밀균지、정향균지、SYP-2815대수도도온병균산포량적억제솔균대우90%;대병균포자아관신장야구유일정적억제작용,EC_(50)치위1.67 ～34.76 μg/mL.재1.0 μg/mL적함약평판상,7충QoI류약제대수도도온병균균사형태무명현영향,단가명현억제기흑색소적산생.
The sensitivity of Magnapothe grisea in vitro at different development stages to six innovative QoI fungicides by China was studied adopting azoxystrobin as the control fungicide.Results showed that these 7 QoI fungicides had strong activity on mycelia growth of M.grisea with EC_(50) values ranging from 0.10 to 2.89 μg/mL,spore yield and spore germination with EC_(50) values ranging from 0.10 to 4.92 μg/mL and 0.75 to 7.14 μg/mL,respectively.The inhibition rate of spore yield on 1.0 μg/mL enestroburin-,azoxystroburin-,SYP-3375- and SYP-2815- amended media was higher than 90%.Seven QoI fungicides could inhibit the length of germ tube of M.grisea with EC_(50) values ranging from 1.67 to 34.76 μg/mL.It could not affect the formation of mycelia,but strongly inhibit melanin biosynthesis of M.grisea on 1.0 μg/mL fungicide-amended media.