identification of plant-parasitic nematodes of rape seed fields and their distribution in esfahan and fars provinces

abstract in order to identify of plant parasitic nematodes of rapeseed in isfahan and fars provinces, 208(96 from esfahan and 112 from fars province) soil and root samples were collected from rapeseed fields during 2005-2007. nematodes were extracted from root and soil , then fixed and transferred to glycerin. the nematodes were mounted on slides and examined by light microscope and identified by valid references. the distribution of identified species was determined too. in this survey 23 species belonging to 14 genera were identified from mentioned provinces. filenchus thornei is reported from iran for the first time. pratylenchus neglectus has the most distribution among the species, in both provinces.