捺细菌性根癌病菌生物型鉴定及生物防治

Biotype of Crown Gall of Prunus salicina Var. cordata and its Biological Control

从福建的古田、沙县和长汀等地采集到的捺细菌性根癌病标样上分离到１２株能致癌的菌株，经细菌学鉴定后认为属根癌土壤杆菌生物型Ⅱ，其中有１０株菌株对土壤杆菌素８４（ａｇｒｏｃｉｎ８４）敏感．用Ｋ８４菌液浸捺砧木的根部３０ｍｉｎ后种植在用分离到的致癌病菌接种过的土壤中，株发病率为２．９６％；用清水处理的砧木种植在用致癌病菌接种过的土壤中和不接种的土壤中，株发病率分别为１９．８９％和３．８２％。

The twelve strains, isolated from crown gall of Prunus salicina var. cordata collected from Gutian, Saxian and Changting counties in Fujian Province, were identified as Agrobacterium tumefaciens biotype II. The ten of the twelve strains were sensitive to agrocin 84. The test showed that K84 strain could be used to control the disease.