General microflora, arbuscular mycorrhizal colonization and occurrence of endophytes in the rhizosphere of two age groups of Ginkgo biloba L.of Indian Central Himalaya

摘要: The populations of the general microflora (bacteria, actinomycetes and fungi) in rhizosphere their corresponding non-rhizosphere soil samples Ginkgo biloba L. two age groups (Group A, 60 years-old trees) growing under a temperate location Indian Himalayan Region (IHR) have been determined. Observations were also made for diversity, distribution colonization arbuscular mycorrhizal (AM) fungi occurrence endophytes roots G. biloba. population was found to be higher Group B trees, more clearly reflected terms rhizosphere: (R:S) ratios. Contrary this, per cent spore densities AM A trees as compared B. fungal observed mostly form loose coils. All spores detected, belonged genus Glomus with five different types. Presence (both bacteria cortical cells roots, profound case trees. Data suggest that, while species dominated biloba, an inverse correlation exist between including endophytes.