Study of plant parasitic nematodes associated with faba bean in Khuzestan province, southwestern Iran.

Root and soil samples were collected and examined from faba bean (Vicia fabaL.) fields in Khuzestan province, southwestern Iran. Seven nematode species were identified as follows:Ditylenchus dipsaci,Ditylenchus medicaginis,Geocenamus bavaricus,Geocenamus brevidens,Geocenamus nanus,Geocenamus nothusandHoplolaimus seinhorsti. Morphometrics and light micrography were provided for the studied species and their differences with those given in their original descriptions were discussed. Populations varied in their frequency and distribution among surveyed faba bean fields butG. brevidenswas the most commonly observed species. This is new record ofD. dipsaci,D. medicaginis,G. bavaricus, G. nanusandG. nothusfor nematodes fauna in Khuzestan province.G. bavaricus, G. nanus,G. nothusandH. seinhorstiare reported for the first time in association with faba bean in Iran. This is the first report ofG. brevidensandG. nanusfrom roots of faba bean. [ABSTRACT FROM PUBLISHER]