诊断桑树黄化型萎缩病的新方法  

A NEW TECHNIQUE FOR DIAGNOSING MULBERRY YELLOW DWARF DISEASE

作　　者：夏志松[1] 蒯元璋[1] 陈培根[1] 

机构地区：[1]中国农业科学院蚕业研究所

出　　处：《蚕业科学》1991年第2期70-74,共5页ACTA SERICOLOGICA SINICA

摘　　要：本文探讨利用瑞氏染色法和旦尼氏染色法诊断桑树黄化型萎缩病的可能性。试验结果表明,用此方法,在病株枝条或主根的横切面上,韧皮部的病原寄生部位被染成兰色或青色,呈阳性反应,健株组织切片的韧皮部则不着色,呈阴性反应。可作为桑黄化型萎缩病病株的实验诊断手段。This article discusses the possibility of diagnosing trees infected by mulberry yellow dwarf disease with Wright' s stain method and Diene' s stain method. On the cross sections of infected mulberry shoots or principal roots, the pathogen parasitic sites in cortex shew blue and bluish-green speckles with Wright' s method and Diene' s method respectively, i. e., positive reactions appeared. Contrarily, the cortex of a healthy mulberry tree was stainless, i. e. , negative reactions occurred. This provides a laboratory way for diagnosing mulberry yellow dwarf disease.

关 键 词：桑树 萎缩病 黄化型 诊断法 

分 类 号：S888.712[农业科学—特种经济动物饲养]