甜瓜枯萎病的病原鉴定及药剂筛选研究  

Study on Pathogen Identification and Screening of Control Fungicides of Muskmelon Fusarium Wilt

作　　者：何玉会 白庆荣[2] 杜佳朋[3] 商圣平 瞿小杰 

机构地区：[1]长春科技学院,吉林长春130600 [2]吉林农业大学农学院,吉林长春130118 [3]上饶师范学院,江西上饶334001

出　　处：《北方园艺》2014年第3期114-117,共4页Northern Horticulture

摘　　要：以采自吉林鲁家镇、四家子镇、乐山镇3地的甜瓜枯萎病病株为试材,采用组织分离法对其病原菌进行分离;同时进行病菌形态学鉴定和ITS序列测定;并采用生长速率法研究比较了21种杀菌剂单剂及3种混配剂对该病原菌的毒力作用。结果表明:该试验共获得7个具有致病性的菌株,表明该病菌为尖孢镰孢(Fusarium oxysporum);室内药剂筛选出了4种抑菌效果较好的杀菌剂,即450g/L咪鲜胺EC、50%多菌灵WP、400g/L氟硅唑EC、30%氟菌唑WP;混配剂30%氟菌唑WP和50%多菌灵WP按2∶1配比毒力作用最强,其次为30%甲霜灵WP和50%多菌灵WP按2∶1配比。Taking muskmelon Fusarium wilt diseased plants from Lujia Town, Sijiazi Town and Leshan Town of Jilin as material,the pathogen was isolated with the method of tissue isolation, and morphological characteristics and ITS sequence were identified,and the effects of 21 fungicides to muskmelon Fusarium wilt were studied with mycelia growth rate indoors. The results showed that seven isolates were obtained from melon wilt plants. Pathogenic test indicated that the seven separate matters had pathogenic. The pathogen of melon wilt plants was identified as Fusariurn occysporum. Prochloraz 450 g/L EC,Carbendazim 50G WP, Triflumizole 400 g/L EC,Mascot 30% WP showed better effective to melon wilt disease. Co-toxicity coefficient of Mascot 30% WP and Carbendazim 50% WP ratio by 2 ： 1 was the highest. The co-toxicity coefficient of Metalaxyl 30 % WP and Carbendazim 50 G WP by ratio of 2 ： 1 was followed.

关 键 词：甜瓜枯萎病 病原菌 杀菌剂 增效作用 

分 类 号：S652[农业科学—果树学]