GENETIC-VARIABILITY AMONG SORGHUM ACCESSIONS FROM THE SAHELIAN AGROECOLOGICAL REGION OF BURKINA-FASO

The authors collected Sahelian sorghum landraces of Burkina Faso in 1984 and 74 of these accessions were characterized in 1985-1986 at Gampela in Burkina Faso (West Africa). The five races of cultivated sorghum were represented in this zone but 63.5% of the accessions were Guinea type. Great intra- and inter-accession variability was found. Plants were tall and had long panicles and small to intermediate seeds. There was a strong association between days-to-flowering, number of internodes, panicle length and height. The 100-kernel weight showed an antagonism with days to flowering and tillering. Multivariate analyses were made which enabled the accessions to be classified into four groups. The group most adapted to the sahelian zone, 'sahelian group', was semi-late, developed intermediate size of vegetative organs, had moderate tillering and had the best yield per plant.