Effect of two arbuscular mycorrhizal fungi Acaulospora spinosa and A. scrobiculata on upland rice varieties

Abstract

The effect of eight varieties of upland rice in sterilized soil in pots, inoculated with root powder inocula of Acaulospora spinosa and A. scrobiculata was studied. All the eight varieties showed a positive response to inoculation with the VAM fungi in terms of levels of colonizations of roots, formation of vesicles/spores, plant biomass and grain yield. Three of the eight varieties showed a greater response than the others. The traditional variety, Mettasannalu gave the least response. A. spinosa was more effective than A. scrobiculata on all the varieties.