Domestication process of two Solanum section lasiocarpa species among Amerindians in the upper orinoco, venezuela, with special focus on Piaroa Indians

Two semi-cultivated Solanum species (S. Sessilifloram Dunal and S. stramonifolium Jacq.) are utilized by the Amazonian Indians of the Upper Orinoco Basin in Venezuela. The manner in which they have become partially domesticated by the Piaroas and other native tribes of this rain forest region is elucidated in the following text. Both species have two varieties, with and without prickles, the latter being the result of human selection. Patterns of indigenous utilization of these species brought to the selection of morphologic forms and to the differentiation of karyotypes of varieties, and exploitation of the species also reflects in the perception of them among users. S. sessiliflorum is cultivated in swiddens and has an economic role, whereas S. stramonifolium is grown in dooryards. This difference is detectable to the Piaroas, as they recognize in their folk taxonomy three different varieties ofS. Sessiliflorum and one ofS. Stramonifolium, according to the stage of domestication of the species and the way in which they are utilized.