Variabilité phénotypique des sorghos locaux de deux régions du Burkina Faso : la Boucle du Mouhoun et le Centre-Ouest

Abstract

en recherche agronomique pour le développement (Cirad), Unité propre de recherche (UPR) « Gestion des ressources génétiques et dynamiques sociales »,

Genetic structure among sorghum landraces as revealed by morphological variation and microsatellite markers in three agroclimatic regions of Burkina Faso

“…Moreover, the red kernel guinea varieties were found to be flourier and less photoperiod sensitive. This difference between red and white kernel sorghum varieties has already been pointed out by Barro-Kondombo et al (2008) in a study on a larger sample of varieties from Burkina Faso. This difference is the main factor responsible for the agromorphological variability structure of sorghum varieties in Burkina Faso, with botanical classification being a secondary factor.…”

“…The intra-specific diversity of sorghum can be characterised based on morphological traits (Appa Rao et al 1996;Teshome et al 1997;Grenier et al 2004;Barro-Kondombo et al 2008). Enzymatic and molecular genetic markers have also recently been used for this purpose.…”

“…The agromorphological diversity of sorghum in Burkina Faso is closely linked with a north-south climatic gradient (Zongo 1991), while the genetic diversity measured by neutral markers has not shown any geographical, ethnolinguistic or environmental structuring (Ollitrault 1987;Zongo 1991;Zongo et al 2005). Recently, Barro-Kondombo et al (2008) have highlighted the importance of intra-village agromorphological diversity influences when comparing sorghum diversity between two regions located in different agroclimatic zones in Burkina Faso.…”

Changes in the diversity and geographic distribution of cultivated millet (Pennisetum glaucum (L.) R. Br.) and sorghum (Sorghum bicolor (L.) Moench) varieties in Niger between 1976 and 2003

“…In West Africa, red and white grain sorghums are grown to meet various production objectives. In Burkina Faso, a neighbouring country of Niger, red sorghums generally mature earlier than white sorghums (Barro-Kondombo et al 2008). Due to their grain pigmentation, red sorghums are less attractive to birds than white sorghums and this colouring also provides them with some grain mold resistance (Stenhouse et al 1997).…”

Diversity and community structure of insect pests developing in stored sorghum in the Northern-Sudan ecological zone of Burkina Faso

“…The physical properties and chemical composition of the grain may cause these preferences (Russell, 1966;Ratnadass et al, 1994;Chandrashekar and Satyanarayana, 2006;Ramputh et al, 1999). Barro-Kondombo et al (2008) reported that the red coloured sorghum grain are generally soft. In Mali, Ratnadass et al (1994) also reported that sorghum cultivars with soft grains were more susceptible to insect damage than cultivars with hard grain.…”