Allozyme diversity in Japanese populations of Hemerocallis thunbergii, H. middendorffii, and H. exaltata (Liliaceae) |
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| Authors: | Soon Suk Kang Junko Noguchi Ki Bae Park Myong Gi Chung |
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| Institution: | Department of Biology, Gyeongsang National University, Chinju 660–701, The Republic of Korea;Department of Botany, Kyoto University, Kyoto 606–01, Japan;Department of Horticulture, Ansung National University, Ansung 456–749, The Republic of Korea;Department of Biology, Gyeongsang National University, Chinju 660–701, The Republic of Korea |
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| Abstract: | Eight populations of Hemerocallis thunbergii, H. middendorffii , and H. exaltata from Japan were analyzed by starch gel electrophoresis to measure genetic variation at ten allozyme loci. The former two species are widely distributed in eastern Asia, whereas H. exaltata is restricted to the Tobishima and Sado Islands in western Japan. Populations of the three species maintain high levels of allozyme variation: mean expected heterozygosities were 0.288, 0.209, and 0.169, respectively. The UPGMA phenogram obtained from Nei's genetic distance values indicated that H. exaltata is allozymically the most distinct species, whereas populations of H. thunbergii and H. middendorffii are closely related. However, based on gross morphology H. exaltata and H. middendorffii are closely related. This discrepancy and the observed high levels of allozyme variation within populations of the three Hemerocallis species in Japan may in part be due to genetic change among populations of the two Japanese archipelago species. |
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