A Siphon Moist Chamber

Abstract

Four lots of corn having, respectively, 0, 1, 2, or 3 genes for yellow pigment in the cells of the endosperm were found to have a vitamin A content of 0.05, 225, 5.00, 7.50 units of Vitamin A per gm. of material, showing that the gene for yellow endosperm color is directly associated with vitamin A. It ia also shown that white-seeded varieties of corn which contain little or no vitamin A are capable of forming it in their seeds when the gene for yellow color is introduced by pollinating with a yellow-seeded variety.