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The Journal of Heredity 1982:73(3):214-218
© 1982 The American Genetic Association 73:214-218

research-article

Inheritance of tannin quantity in sorghum

B. J. Woodruff, R. P. Cantrell, J. D. Axtell, and L. G. Butler

Department of Agronomy, Purdue University West Lafayette, IN 47907
Department of Biochemistry, Purdue University West Lafayette, IN 47907

Abstract

The vanillin assay was used to estimate the seed tannin content of 13 F2 populations of Sorghum bicolor (L.) Moench. The analysis revealed an intermediate to high broad-sense heritability for tannin quantity. Similar F2 segregation patterns in many of the crosses suggested that relatively few genes control this trait. High tannin was found to be dominant to low tannin. Classification of the F2 based on the parental and F1 ranges of catechin equivalents suggested one or two genes were segregating in most crosses, although different gene loci or alleles appeared to exist. However, comparing the expected distributions within each phenotypic class to the observed F2 distributions indicated one or two gene models were inadequate to explain the data.


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