AMF association in S. khasianum, S. sisymbriifolium, and
S. torvum was investigated for the first time, although, AMF
association in some other Solanum species has been reported
earlier [1, 26]. Mean AMF spore density with a range of
498–740 in 25 g rhizosphere soils were observed in Solanum
species which was very much higher than reported by Akond
et al. [1] who reported 118–136 spores from 100 g soil in
three cultivated Solanum species. The difference might be
due to the sampling which was done from undisturbed natural
environment during dry season (November–January)
when the highest spore density could be expected [18]. In a
cultivated plant species, soil disturbance in the form of tillage
and use of machineries disturbs the hyphal development
of mycorrhiza, and thus reduces the production of its
spore, which further supported the view that spore density in
undisturbed soil was higher than that in cropped soil