TAILIEUCHUNG - Báo cáo lâm nghiệp: "Diversity of endomycorrhizal fungi and their synergistic effect on the growth of Acacia catechu Willd."

Tuyển tập những bài báo cáo nghiên cứu khoa học hay nhất được đăng trên tạp chí JOURNAL OF FOREST SCIENCE đề tài: Diversity of endomycorrhizal fungi and their synergistic effect on the growth of Acacia catechu Willd. | JOURNAL OF FOREST SCIENCE 55 2009 10 461-468 Diversity of endomycorrhizal fungi and their synergistic effect on the growth of Acacia catechu Willd. V. Parkash1 a. Aggarwal2 Rain Forest Research Institute ICFRE Assam India Botany Department Kurukshetra University Haryana India ABSTRACT The diversity of arbuscular mycorrhizal AM fungi of Acacia catechu Willd. was studied. Dominant AM spores the bacterium Rhizobium sp. along with the fungus Trichoderma viride were isolated from the rhizosphere of A. catechu and mass-produced in laboratory. The co-inoculation effect of Glomus mosseae Glomusfasciculatum mixed AM Glomus spp. except G. mosseae G. fasciculatum with Acaulospora spp. Sclerocystis spp. and Gigaspora spp. Rhizobium sp. and Trichoderma viride was studied as exerted on the growth of A. catechu seedlings. All inoculated seedlings showed improved seedling growth compared to the control. Inoculated seedlings had a pronounced effect on all growth parameters such as height fresh and dry weight of roots and shoots AM spore count per cent mycorrhizal colonization in roots and root nodule number in comparison with uninoculated seedlings. Phosphorus uptake was also higher in inoculated seedlings than in the control. This study provides a good scope for commercially utilizing the efficient strains of AM fungi for beneficial effects with other beneficial rhizosphere microflora in the primary establishment of slow growing seedlings ensuring better survival and improved growth. Keywords Acacia catechu Willd. co-inoculation phosphorus Rhizobium sp. Trichoderma viride AM diversity Abbreviations ppm - parts per million LSD - least standard deviation sp. - species AM - arbuscular mycorrhiza Acacia catechu Willd. is an medicinally important leguminous tree that grows naturally in all kinds of geological formations and soils of all kinds. Katha which is an important ingredient in the Pan preparation commonly used in northern India is commercially obtained from this plant. A. .

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