Identification of Root-rot Nematodes in Megranate in Yunnan Province

[Objective] The research aimed to confirm the kinds of nematode disease in megranate and provide theoretical basis for identifying and controlling diseases.[Method] 225 pieces of megranate root system and rhizosphere soils were collected from Mengzi county,Jianshui county of Honghe state and Huize county of Qujing city in Yunnan main megranate cultivation areas in 2003~2006.The species of parasitic nematode in megran ate were investigated and identified.[Result] A kind of root rot nematode was separated and identified as Pratylenchus coffeae Seinhorst,belonging to Tylenchida Thorne,Pratylenchidae Thorne,Pratylenchinae Thorne,Pratylenchus filipjev.[Conclusion] A kind of root rot nematode,P.coffeae,parasitized megranate rhizosphere in Yunnan province was first reported.Megranate was a new record of host for P.coffeae.It was quite necessary to study the damage of P.coffeae to nematode further.