Effect of Glomus Species on Success and Survival of Jamun Grafts in Relation to Chlamydospores and Percent Root Colonization

Abstract

An experiment was conducted to assess the effect of three Glomus species on the percent success and survival of jamun grafts in relation to the chlamydospores and root colonization behavior. A factorial completely randomized design experiment was conducted by the soil inoculation of three Glomus species fungi namely Glomus fasciculatum, Glomus leptotichum and Glomus intraradices to jamun seeds (cultivated and wild) sown in polybags at five grams per polybag. The chlamydospores count and percent colonization at two stages i.e. one month after sowing and grafting stage was done from the soil and expressed in numbers per 50 grams and percentage respectively. Cultivated jamun rootstocks inoculated with Glomus fasciculatum exhibited significantly maximum spore population in the rhizosphere of one month old rootstocks (242.00) and at grafting stage (519.00), while significantly minimum spore population was recorded in uninoculated rootstocks at one month after sowing (23.33) and at grafting stage (91.00). Wild jamun rootstocks inoculated with Glomus fasciculatum recorded significantly maximum spore population in the rhizosphere of one month after sowing (175.66) and at grafting stage (421.33). Higher root colonisation was observed in my corrhiza inoculated seedlings compared to uninoculated seedlings. Wild jamun rootstocks inoculated with Glomus fasciculatum recorded significantly higher root colonisation at one month after sowing (80.00%) and at grafting stage (82.00%) which was on par with rootstock inoculated with Glomus leptotichum at one month after sowing (78.20%) and at grafting stage (80.00%). Zero root colonisation was recorded in uninoculated seeds one month after sowing (0.00%) and at grafting stage (5.50% ).