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贵州省黔东南州太子参(Pseudostellaria heterophyllariae)近年来发生3种严重病害,通过对太子参发病叶片和块茎的病症观察,用组织分离法分离病株和土壤病原微生物后再用16Sr DNA测序和形态学鉴定方法对所得菌株进行鉴定,其病原菌分别为茄匐柄霉(Stemphylium solani)和尖孢镰刀菌(Fusarium oxysporum)、互隔文链孢霉(Alternaria alternata)和立枯丝核菌(Rhizoctonia solani)。同时,在太子参根腐病的病土中也分离出病原菌匍枝根霉(Rhizopus slolonifer)。这些病原菌导致的病害为太子参褐斑病、太子参立枯病和太子参腐烂病。
In recent years, three serious diseases occurred in Pseudostellaria heterophyllariae in Qiandongnan Prefecture of Guizhou Province. By observing the symptoms of P. ginseng leaves and tubers, isolating the diseased plants and soil pathogenic microorganisms by tissue isolation, the 16Sr DNA sequencing and morphology The strains were identified by the method of identification and identification. The pathogenic bacteria were identified as Stemphylium solani and Fusarium oxysporum, Alternaria alternata and Rhizoctonia solani ). At the same time, the pathogen Rhizopus slolonifer was also isolated in the root rot soil of Panax ginseng. The diseases caused by these pathogens are heterophylla cucumber, heterophylla and prunus rot.