Morphological diversification and genetic lsolating mechanism between some members of Solanum nigrum complex.

Hybridization Studies of Five Species of the Solanum Nigrum Complex Found in South Africa and two Cocktail Tomato Cultivars

“…Edmonds (1977) found similar results in a study on Solanum and Beg et al (1989) stated that the production of sterile hybrids indicated that the species were not closely related to each other, as seen in the dendrogram for the amplified fragment length polymorphism data in the genetic relationship study between these species (Jacoby et al, 2003). The ploidy differences may also provide a barrier to hybridization between morphologically similar plants leading to cyto-races difficult to distinguish using classical methods (Edmonds, 1977).…”