Resistance of Non-tuberous Solanum to Root-knot Nematode.

Abstract

Resistance of eggplant, its wild relatives, interspecific Solanum hybrid and amphidiploids to Meloidogyne incognita was evaluated through inoculation of seedlings and grafted- and non- grafted plants. Immunity or high resistance was observed in S. khasianum, S. torvum and S. toxicarium. Small swellings were formed in S. sisymbriifolium; however, nematode matura- tion/egg production was not attained. The susceptible factor of the grafted scion was not transmitted across the graft union to the rootstock. Eggplants, S. integrifolium, their hybrid and amphidiploids, and S. indicum failed to show resistance against the root-knot nematode. Solanum mammosum and S. surattense were highly susceptible to M. incognita.