Abstract
Seven cultivars were planted at different locations and dates to obtain estimates of genotypic and environmental variability. The characters tested were found to be significantly affected by both location and planting date. The β carotene and ascorbic acid were found to be heritable to an appreciable degree, and are suspected to be under multigenic control. β carotene was significantly and negatively correlated with colour while the ascorbic acid contents were significantly and positively correlated with the reducing sugars of the seven cultivars.
