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African Crop Science Journal
African Crop Science Society
ISSN: 1021-9730
EISSN: 1021-9730
Vol. 3, No. 2, 1995, pp. 143-151
Bioline Code: cs95020
Full paper language: English
Document type: Research Article
Document available free of charge

African Crop Science Journal, Vol. 3, No. 2, 1995, pp. 143-151

 en Dispersal of Sorghum and the Role of Genetic Drift
Dahlberg, J.

Abstract

Sorghum, family Graminae, and tribe Andropogoneae, evolved and slowly spread primarily within the confines of the African subcontinent. From the four major forces of evolution, selection, mutation, random genetic drift and migration, arose the wild representatives of S. bicolor subspecies verticilliflorum that are still present today. Though humans appeared on the scene about 2 millions years ago, their role in the evolution of sorghum was probably limited to that of a physical agent of dispersal and occasionally an agent of selection.

Keywords
Evolution, spread, Sorghum bicolor

 
 fr
Dahlberg, J.

Résumé

Le sorgho, famille des graminees et tribu d'andropogoneae, a evolue et s'est rependu progressivement d'abord dans les limites du continent africain. En plus de quatre forces majeures de l'evolution dont la selection, la mutation, la derive genetique due au fait du hasard, et la migration, il y a l'apparition de representants de forme sauvage des sous-especes de S. bicolor telles les verticilliflorum qui sont encore presents aujourd'hui. Malgre la presence de l'etre humain il y a deux millions d'annees, son role dans l'evolution du sorgho etait probablement limite a celui de l'agent physique de dispersion et occasionnellement a celui de l'agent de selection.

Mots Clés
Evolution, dispersion, Sorghum bicolor

 
© Copyright 1995 - African Crop Science Society

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