Abstract:

Species and densities of parasitic nematode8 were systematically investigated from the daizosphere soil of 73 clone 8 which belong to 17 species of wild grapes native to China. 19 species of plant nematodes belonging to 9 genera respectively were identified from 300 soil samples，which contained six species of Helicotylenchus，four species of Xiphinema， two species of Paratylenchus， two species of Tylenchorhynchus， and one species of Longidorus, Paratylenchus， Rotylenchus， Criconemoides and Hoplolaimus each. Nematode population usually consisted of 2—5 genera．Three genera i．e Helicotylenchus, Paratylenchus and Tylenchorhynchus spread widely in many wild clones．Differences of nematode genera and densities among diferent wild clones were given．The results would be basis for stock selection resistant to parasitic nematodes．

Key words: Crape, Wild grapes native to China, Parasitic nematodes