Nutritional quality in grain sorghum ― Behavior of crosses between high lysine sorghum and agronomically superior types

The genetic behaviour of protein, lysine and leucine was examined from F sub(1) to F sub(8) generations in crosses involving shrivelled high lysine Ethiopian sorghums and some agronomically desirable types. In F sub(1), the plump opaque fraction was marginally superior to the plump translucent fraction for lysine; the shrivelled opaque was, of course, the most superior. There was very low level of recombination between plump and shrivelled fractions of the same ear head in the segregating generations. The shrivelled types exhibited superiority over plumps with respect to both protein and lysine in F sub(1) as well as in advanced generations. The lack of association between protein and lysine content in shrivelled seed indicates the possibilities of recovering high lysine with high protein.