Developmental modification and hybridization of allelic acid phosphatase isozymes in homo- and heterozygotes for the Acp-1 locus in rice

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Abstract
A number of alleles each specified a set of three major and three minor bands of acid phosphatase (E.C. 3.1.3.2) in wild and cultivated rice strains. Relative intensity of the major bands was found to differ significantly according to the developmental stages of the leaves, suggesting the presence of protein modification genes. In heterozygotes, six parental and three hybrid major bands were clearly observed in most of the heterozygotes, but the intensities of the hybrid bands were found to be generally lower than those theoretically expected due to random association of enzyme subunits. The cause of this phenomenon is discussed.