Abstracts |
Arbuscular mycorrhizal biodiversity survey was conducted in 2007 to determine density, distribution and dominance. Citrus reticulata (blanco), (Mandarine Orange), the most widely cultivated horticultural crop of Vidharbha region, was considered for investigation. Thirty five rhizopheric soil and root samples from five districts belonging to twenty nine different villages were collected and screened for detail physico-chemical analysis, AMF spore count and diversity. AM fungi were associated with citrus roots and soil in all thirty five orchards and nurseries from Vidharbha Region of Maharashtra State, India. In all sixty three different species belonging to six different AMF genera were isolated and identified. The five most dominant AMF species viz., Glomus fasciculatum, G. aggregatum, G. Maculosum, G. geosporum and Scutellispora calospora, were associated with citrus root and rhizospheric soil. G. fasciculatum, was recovered from maximum thirty two sites from all the five districts. AMF spore count 100-1 g of soil was in between seventy four to one thousand three hundred sixty seven spores. The maximum spore count was from citrus nursery soils. Glomus fasciculatum was consistently associated with young and mature trees of citrus. |