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 YAM 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.