哈茨木霉对水稻恶苗病菌的拮抗作用  

Antagonism of Trichoderma harzianum against Fusarium moniliforme on rice

作　　者：产祝龙[1] 丁克坚[1] 檀根甲[1] 苏贤岩[1] 朱圣杰[1] 陈琪[1] 

机构地区：[1]安徽农业大学植物保护系,合肥230036

出　　处：《植物保护》2003年第3期35-39,共5页Plant Protection

基　　金：安徽省"十五"攻关项目 ( 10 10 13 0 11)

摘　　要：PDA平板拮抗试验表明 ,哈茨木霉对水稻恶苗病菌有强烈的拮抗作用 ,其孢子悬浮液的含孢量为 10 6～ 10 7个 /mL时 ,对恶苗病菌的抑制力达 92 33%。通过哈茨木霉菌液和 3种药剂对水稻恶苗病菌抑制效果的比较 ,哈茨木霉孢子悬浮液含孢量为 10 7个 /mL与施保克质量浓度 1μg/mL的抑菌效果接近 ,分别为 76 7%、75 4 %。显微摄影结果显示 ,哈茨木霉以附着胞附着在恶苗病菌菌丝上 ,然后穿透菌丝在其内生长 ,或与恶苗病菌的菌丝平行生长 ,然后再侵入病菌内寄生。The antagonistic experiment on PDA showed that Trichoderma harzianum had strong antagonism against Fusarium moniliforme. The effective concentration was at 10 6～10 7 cfu/mL, and the inhibitory efficacy reached 92.33% . Through another measuring experiment of T. harzianum and three kinds of fungicides against F. moniliforme, a conclusion could be drawn: the concention of 10 7 cfu/mL of T. harzianum had almost the same effect as 1 μg/mL of sportak. The inhibition ratios were 76.7% and 75.4%, respectively. By microscopy photograph, the investigations showed that T. harzianum could either adhere to the hyphae of F. moniliforme with appressoria or grow parallel with the hyphae of E moniliforme, then penetrated and parasitized in them.

关 键 词：哈茨木霉 水稻 恶苗病 恶苗病菌 拮抗作用 生物防治 作用机理 

分 类 号：S435.111.4[农业科学—农业昆虫与害虫防治] S476[农业科学—植物保护]