Reproductive variations in Aphelenchoides besseyi populations

Sixteen populations of Aphelenchoides besseyi from different hosts and geographical areas were evaluated for mode of reproduction and host range. Parthengenetic reproduction was recorded in population from O. glaberrima (USA) and populations of O. sativa from Bhowali, Coimbatore, Cuttack, Faizabad, Hazaribagh, Hyderabad, Panvel, Port Blair and Raipur (India). Populations from Fraxinus americana (USA), O. sativa (Almora, Pantnagar (India) and Phillipines), Setaria italica, Panicum miliaceum (Bangalore, India) and Stylosanthes Hamata (Australia) had amphimictic mode of reproduction. Based on multiplication rate of populations on eight fungal species and host cultivars, the populations could be assigned to at least three groups.