INHERITANCE OF TANNIN QUANTITY IN SORGHUM
Abstract
The vanillin assay was used to estimate the tannin content of 13 F2 populations. The analysis revealed an intermediate to high broad-sense heritability for tannin quantity. Similar F2 segregation patterns and F1's in many crosses suggested a few genes. High tannin was found to be dominant to low tannin. A very high tannin line indicated the presence of at least one partially dominant gene. 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. Fitting the expected distributions within each phenotypic class to the observed F2 distributions indicated one or two gene models were inadequate to explain the data.
Degree
Ph.D.
Subject Area
Agronomy
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