【摘要】 从采自金华市各地的68份土样中分离得到了放线菌406株,以水稻纹枯病菌为指示菌,利用平皿对峙法筛选到42株具有较好拮抗作用的放线菌菌株.其中,Sh-43菌株的拮抗作用最强,抑菌带宽度为28.3mm.根据培养特征、形态特征、生理生化特征及16S rDNA序列比对分析,鉴定Sh-43菌株为吸水链霉菌(Strep-tomyces hygroscopicus).更多还原

【Abstract】 Four hundred and six actinomycetes were isolated from sixty eight soil samples which were collected from different areas of Jinhua.Forty-two strains had been proved to have antagonistic activity against Rhizoctonia solani by confronting cultivation on PDA plates.Among them,the strain Sh-43 exhibited the strongest antibiosis capacity with an inhibition zone of 28.3 mm.The strain Sh-43 was identified as Streptomyces hygroscopicus on the cultural,morphological,physiological,biochemical characteristics and 16S rDNA gene sequence analysis.更多还原