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Pseudo-self-compatibilities (PSC) of 6 I0 clones of red clover, Trifolium pratense L., and of their 15 F1 progenies establishes transmission of PSC from parent clones to progenies. Sterility-allele genotypes occurred in abnormal ratios, and differed significantly for mean PSC, in two of the three F1 progenies involving the 6 I0 clones as parents. Two I1 progenies, selected on the basis of previously accumulated sterility-allele segregation data, gave a better fit to a 1:1 (selective fertilization) than to a 1:2 (zygotic lethal) ratio for sterility-allele genotype.
Key Words: inheritance selfing
2 Formerly Graduate Assistant and Associate Professor of Agronomy, University of Maryland, College Park, Md. 20740
Received for publication July 26, 1967.
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