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Research Journal of Parasitology
Year: 2011  |  Volume: 6  |  Issue: 2  |  Page No.: 83 - 89

Community Analysis of Plant Parasitic Nematodes Prevalent in Vegetable Crops in District Durg of Chhattisgarh, India

R. Sahu, P. Chandra and A.N. Poddar    

Abstract: Community analysis of plant nematodes is an important criterion for assessment of their pathogenic potential in a particular region and identification of hotspots of nematode attack. This investigation involves a study of the community structure of phytonematodes associated with the vegetable crops in the district Durg of Chhattisgarh. Collection of soil and root samples was done during mid cropping season from the rhizosphere of vegetable crops. Extraction of the nematodes was done by Cobb’s sieving and decanting method, followed by modified Baermann’s funnel technique. Species were identified on the basis of perineal patterns of females. The estimation of nematode population was done in a multichambered counting dish under a stereoscopic binocular microscope. The predominant nematode species were Meloidogyne incognita, M. javanica and Meloidogyne spp. associated with Tomato, Egg plant, Cowpea and Bottle gourd. Others were Rotylenchulus reniformis, Tylenchorhynchus indicus, Pratylenchus spp. Helicotylenchus spp. and Tylenchidae. The highest absolute density was of M. incognita and Meloidogyne spp. followed by M. javanica, M. arenaria and R. reniformis while, Helicotylenchus spp. and Tylenchidae had the lowest density. T. indicus, R. reniformis and M. javanica were most frequent while, Meloidogyne spp. Helicotylenchus spp. and Tylenchidae were the least frequent. Highest prominence value was recorded for M. javanica, followed by M. incognita, Meloidogyne spp. R. reniformis and M. arenaria. Pratylenchus spp. Helicotylenchus spp. and Tylenchidae were the least prominent nematodes. This is the first record of various species of phytonematodes associated with vegetable crops in this tribal state.

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