摘要
利用菌丝生长速率法,测定了江西省不同地区的48个稻瘟病菌单孢菌株对富士一号的抗药性。在所有测试的菌株中,富士一号的抑制中浓度为6.19～21.13 mg/L,最不敏感菌株与最敏感菌株的Ec50值相差3倍以上,表明江西省的稻瘟病菌菌株对富士一号已产生低水平的抗性;同时,在实验室条件下比较了抗药性菌株在自然连续传代和药剂选择压力下(5 mg/L)连续传代8次的Ec50值,发现在两种条件下,Ec50值并没有显著的变化,这表明抗药性是稳定遗传的。
The resistance to Isprothiolane of 48 strains of rice blst （Magnaorthe grisea, anamorph ： Pyricularia grisea） from different areas of Jiangxi Province were measured by mycelium growth rate method. The Ec50 of the strains tested to Isoprothiolane ranged from 6. 19 to 21. 13 mg/L, a difference of more than 3 times, showing that there existed different degrees of resistance to the pesticide among the strains. The resulted also revealed that the resistance of the resistant strains to Isoprothiolane was stably inherited in the experiment of continuously 8 generations of growth on PDA medium with and without Isoprothiolane （5 mg/L ） respectively.
出处
《江西农业大学学报》
CAS
CSCD
北大核心
2007年第3期351-355,共5页
Acta Agriculturae Universitatis Jiangxiensis
基金
国家人事部留学回国人员科技项目(国人部发[2003]50)
关键词
稻瘟病菌
抗药性
富士一号
Magnaporthe grisea
resistance
Isprothiolane
