Response of Albizia lebbek and Dalbergia sissoo towards dual inoculation of Rhizobium and abuscular mycorrhizal fungi

摘要

Growth performance of two forest tree species, Albizzia lebbek and Dalbergia sissoo was evaluated under field conditions for which seedlings were raised in sterilised soil inoculated with two Rhizobium R- Al and R -AcN and two arbuscular species namely, Glomus species 1 and Glomus species 2 in earthen pots, separately. Effects of various inoculations on growth of plants including, shoot height, root length, number of leaves, dry biomass of shoot, root and leaf, numberand, biomass of nodule were studied. Biochemical effects of these symbionts were also determined in plant tissue for the status of protein and sugar level. In general Rhizobium and/or arbuscular inoculations was found to enhance the growth with respect to height, biomass and nodule status. Under experimental conditions, enhanced level of growth was observed in plant treated with Rhizobium and arbuscular mycorrhiza both. The necessity for the preinoculation of these symbiotic organisms at nursery stage of D. sissoo and A. lebbek for better plantation results is discussed.