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Sexual dimorphism in aralia nudicaulis araliaceae






Evolution 36(2): 371-378

Sexual dimorphism in aralia nudicaulis araliaceae

In the dioecious, clone-forming, herbaceous, perennial A. nudicaulis L. (Araliaceae), the male ramets bear more flowers per inflorescence, have greater frequency of flowering and occur in higher densities and greater numbers than do the female ramets. There seem to be no differences between sexes in either the growth rates of the rhizomes or in the recruitment and death rates of the ramets. The male bias in the apparent sex ratio of the ramets, largely results from differences in the frequency of flowering between the 2 sexes. It is unclear if the sex ratio of the flowering ramets reflects the sex ratio of all the reproductive ramets in the population because, apart from differences in flowering frequency between the sexes, a large proportion of sexually mature ramets may not flower in a given year.

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Accession: 006408404

DOI: 10.2307/2408056



Related references

Sexual dimorphism in Aralia nudicaulis L. (Araliaceae). Evolution 36(2): 371-378, 1982

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