Genetic variation for grain iron and zinc concentration in the US sorghum [Sorghum bicolor (L.) Moench] association panel

Iron (Fe) and zinc (Zn) are important nutritional traits that determine the cultivar value of grain sorghum [Sorghum bicolor (L.) Moench]. The present study was undertaken to characterize the natural variation in landraces and accessions of sorghum association panel for grain Fe and Zn and to understand the nature of the association between grain Fe and Zn concentration and grain yield. Grain Fe and Zn were quantified from seeds harvested from rainfed and irrigated field experiments. The results indicated significant (p