The occurrence and inheritance of waxy bloom on sorghum

Abstract

All sorghum varieties develop a waxy bloom. When heavy this bloom is present on the leaf-sheath, leaf-blade, internode, panicle branch and glume. It is best seen at flowering time. When sparse, the bloom is easily seen at the top of the leaf-sheath, top of the internode, and the base of the under-surface of the leaf. Some groups of sorghum show the bloom in heaviness and others in sparseness. The heavy bloomed condition (H) is a simple dominant to the sparse bloomed condition (h). The factor (H) is independent in inheritance to the leaf-sheath colour factors P and Q, leaf margin disposition factor Mu, grain surface structure factor Z, and the brown grain factors B1 and B2.