申嗪霉素对小麦纹枯病菌的毒力测定及盆栽药效

Toxicity in vitro and Efficacy in Pot Trials of Shenqinmycin Against Rhizoctonia Cerealis in Wheat

在室内条件下,申嗪霉素对小麦纹枯病菌具有强烈的抑制作用,其毒力回归方程为Y=0.796 5 X-4.342 4(R2=0.993 8),药剂的EC50值为0.436 6±0.513 0μg/mL。盆栽试验结果表明,100μg(a.i.)/mL申嗪霉素对小麦纹枯病的防治效果最好,防效达到71.5%,显著高于100μg(a.i.)/mL井冈霉素对小麦纹枯病的防治效果。10μg(a.i.)/mL和50μg(a.i.)/mL申嗪霉素对小麦纹枯病的防治效果次之,分别为44.4%和61.3%。

Shenqinmycin has a strong inhibitory effect on Rhizoctonia cerealis in vitro. regression equation of this antibiotics was Y = 0. 796 5X- 4. 342 4 （R2 = 0. 993 8）, EC50 The virulent =0. 436 6± 0. 513 0ug/mL. 100 ug（a. i. ）/ mL of Shenqinmycin was the best dosage against wheat sheath blight （effectiveness rate was 71.5 %）. The effect of Shenqinmycin was significantly higher than the control effect of 100ug（a. i. ）/mL Jinggangmycin in pot experiment. Efficiency of 10 and 50ug（ai）/ mL Shenqinmycin against wheat disease was 44. 4% and 61.3% ,respectively.