Low genetic differentiation betweenAdiantum capillusveneris L. andA. ogasawarense Tagawa (Adiantaceae), an endemic pteriodophyte of the bonin (ogasawara) islands |
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| Authors: | Motomi Ito Akiko Soejima Masamitsu Wada |
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| Institution: | (1) Makino Herbarium, Faculty of Science, Tokyo Metropolitan University, Minami Osawa 1-1, Hachioji-shi, 192-03 Tokyo, Japan;(2) Department of Biology, Faculty of Science, Tokyo Metropolitan University, Minami Osawa 1-1, Hachioji-shi, 192-03 Tokyo, Japan |
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| Abstract: | Genetic differentiation was examined betweenAdiantum capillus-veneris L. andA. ogasawarense Tagawa. A total of 136 individuals from two populations ofA. ogasawarense and three populations ofA. capillus-veneris were sampled. Allozymes encoded by 19 putative loci for nine enzyme systems were observed. The populations ofA. ogasawarense are genetically differentiated from those ofA. capillus-veneris; conspecific populations cluster together. However, genetic identity between two species was estimated to be 0.815, and indicates
that the degree of allozyme differentiation is lower than those between endemic flowering plants and their progenitors. It
is possible that the low genetic differentiation observed betweenA. ogasawarense andA. capillus-veneris results from a recent origin of the endemic species,A. ogasawarense. |
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| Keywords: | Adiantum capillus-veneris Adiantum ogasawarense Allozyme Bonin Islands |
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