Research notes: Reference diagrams of seed coat colors and patterns for use as
genetic markers in crosses
Specht and Williams (1978) reported on the use of hilum color as a genetic marker in soybean crosses. We present the classification of seed coat color and seed coat patterns that we have been using . Table 1 lists the genes affecting seed coat pigmentation to be con sidered. Table 2 presents data from the 64 genotypic combinations according to flower and pubescence color. Table 3 surrmarizes the data.