| 水稻稻瘟病菌不同发育阶段对7种QoI类杀菌剂的敏感性 |
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| 引用本文： | 王海强,周俞辛,王景元,刘西莉.水稻稻瘟病菌不同发育阶段对7种QoI类杀菌剂的敏感性[J].农药学学报,2009,11(4):434-440. |
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| 作者姓名： | 王海强 周俞辛 王景元 刘西莉 |
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| 作者单位： | 1.中国农业大学 植物病理系,北京 100193 |
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| 基金项目： | "十一五"国家科技支撑计划粮食丰产科技工程项目 |
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| 摘 要： | 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,EC50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,EC50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,EC50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。
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| 关 键 词： | QoI类杀菌剂 水稻稻瘟病菌 发育阶段 敏感性 |
| 收稿时间： | 2009/4/15 0:00:00 |
Sensitivity of Magnapothe grisea at Different Development Stagesto Seven QoI Fungicides |
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| WANG Hai-qiang,ZHOU Yu-xin,WANG Jing-yuan and LIU Xi-li.Sensitivity of Magnapothe grisea at Different Development Stagesto Seven QoI Fungicides[J].Chinese Journal of Pesticide Science,2009,11(4):434-440. |
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| Authors: | WANG Hai-qiang ZHOU Yu-xin WANG Jing-yuan and LIU Xi-li |
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| Institution: | 1.Department of Plant Pathology,China Agricultural University,Beijing 100193,China |
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| Abstract: | 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. |
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| Keywords: | QoI fungicides Magnapothe grisea development stages sensitivity |
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