黄花倒水莲根结线虫病的病原鉴定

Identification of the pathogen causing root-knot nematode disease in Polygala fallax

2019年在福建省多个地方发现黄花倒水莲Polygala fallax遭受根结线虫的严重侵染,为明确病原线虫种类,运用形态学、rDNA-ITS序列分析及特异引物PCR扩增的方法对分离获得的根结线虫进行种类鉴定。结果表明,该病原线虫为南方根结线虫Meloidogyne incognita。黄花倒水莲根结线虫病在我国为首次报道。

In 2019,the severe infestation of Polygala fallax by root-knot nematode occurred in several places of Fujian province.In order to confirm the species of root-knot nematode,the nematode was identified by morphological observation,rDNA-ITS sequence analysis and PCR amplification using species-specific primers.The results showed that the root-knot nematode in P.fallax was Meloidogyne incognita.This is the first report of root-knot nematode disease in P.fallax in China.