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Viability versus Fecundity Selection in the Slender Wild Oat, Avena barbata L
Abstract:
Estimates of relative selective values of different genotypes in natural populations of predominantly self-pollinated plants have consistently shown a net heterozygote advantage. Heterozygote advantage is further analyzed in the present study by estimating components of selective values corresponding approximately to viability and fecundity. The results show that a higher proportion of heterozygotes than of homozygotes survive from seeding to adult stages and that this viability selection accounts for the overall excess of heterozygotes.
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