Genetic Transformation of Solanum mauritianum Scop. (Tobacco Tree)

Abstract

Solanum mauritianum Scop, is a widespread weed in South Africa, Swaziland, and Australia. It is an efficient competitor for space, water, light, and nutrients, thereby often replacing preferred indigenous vegetation. The species has a number of common names, including tobacco tree, groot bitterappel, luisboom, and bug weed, the latter being the most frequently used name in South Africa. The plant is a perennial shrub or small tree, up to 4m in height, with woody stems and herbaceous leaves. The grey-green leaves, which are densely covered with hairs, are up to 30cm long and 15cm wide. The inflorescence is branched and produces many violet flowers. The green berries that form subsequently turn a dull yellow at maturity. Twenty to 80 berries are formed from each inflorescence and each berry contain up to 150 seeds, of which 98% are viable (Campell and van Staden 1983).