CHARACTERIZATION OF SORGHUM GENOTYPES ABOUT THEIR TANIN: GRAIN CONTENT

Abstract

In order to determine the tannin content in the grain of 20 genotypes of sorghum (Sorghum bicolor L. Moench) an experiment was established in Padilla, Tam. (México) during the spring of 1992. Highly significant differences were found between genotypes in grain tannin content as well as in days to bloom, plant height, panicle length and grain yield. The genotypes with the lowest seed tannin content were SC 30 and SC 8, with averages of 0.59 and 0.46 mg g^-1, respectively. The genotypes that had the highest seed tannin were SC 134 and SC 125 with averages of 5.18 and 5.29 mg g-1, respectively. These low tannin genotypes are white seeded so they could be useful for human consumption purposes. None significant correlation of tannin content with agronomic traits (including grain yield) was found.