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The Journal of Heredity 1989:80(5):345-350
© 1989 The American Genetic Association 80:345-350

research-article

Genetics of Callus Proliferation and Shoot Differentiation in Barley

T. Komatsuda, S. Enomoto, and K. Nakajima

Department of Cell Biology, National institute of Agrobiological Resources Tsukuba, Japan

Address reprint requests to Dr. Komatsuda, Dept. of Cell Biology, National Institute of Agrobiological Resources, Tsukuba, 305 Japan

Abstract

The genetics of callus proliferation and subsequent shoot differentiation in tissue culture of the immature barley embryo was examined by means of a 7 × 7 complete diallel set of crosses. The following similarities were observed in the genetic systems of two culture traits: (1) significance of additive effects and dominance of the genes, (2) a high level of mean degree of dominance, (3) the presence of completely dominant parents, (4) positive and negative actions of dominant genes, and (5) high values for heritabilities. However, both culture traits were found to be controlled by different genetic mechanisms, because the orders of parental degree of dominance for the two traits differed. Major nonallelic gene Interactions were detected for the shoot differentiation trait. A parent carrying an uncommon genotype was discovered.


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