Inheritance of tannin content in sorghum grain.
1988
Chariya Srichantub
Vanillin-HC1 assay was used to estimate grain tannin content of 9 F2 populations of Sorghum bicolor (L.) Moench. Intermediate to high broad-sense heritability estimates were obtained for tannin quantity. Classification of the F2 on the basic of parental and F1 ranges of catechin equivalents suggested that two genes were segregating in most crosses although different loci or alleles appeared to exist. However, comparison of expected distributions within each phenotypic class and observed F2 distributions indicated that two-gene models were inadequate to explain data. Changes in tannin content of seeds from original thirty-six lines of sorghum. Tannins appeared first at the milk stage, reached a maximum at the dough stage, and thereafter declined at physiological and storage duration for six high tannin lines. And one line exceptional exhibited a decrease in tannin concentration varying by stage of maturation. For hybrid tannin determination, the amount of tannin content from six hybrids of sorghum grain showed a maximum tannin content at the dough stages similar to six high tannin lines, which was the most parents of them.
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