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Relationship of diploid East Aisan Taraxacum Wiggers using the capitulum morphological character  

Lee, Kyung Hwa (Department of Biology, Kyungpook National University)
Yang, Ji Young (Department of Biology, Kyungpook National University)
Morita, Tatsuyoshi (Department of Biology, Faculty of Education, Niigata University)
Ito, Motomi (Graduate school of Arts and Sciences, The University of Tokyo)
Pak, Jae-Hong (Department of Biology, Kyungpook National University)
Publication Information
Korean Journal of Plant Taxonomy / v.34, no.2, 2004 , pp. 153-166 More about this Journal
Abstract
Genus Taraxacum propagated through diploid sexual reproduction and polyploid agamospermy. The cluster analysis of Korean(2 species, 4 population), Japanese (2 species 4 taxa 6 population) and Taiwanese (1 species, 3 population) Taraxacum species using 15 measured capitulum morphological characters was conducted to study the speciation of diploid Taraxacum in East Asia. We measured 15 capitulum morphological characters including length of capitulum, length and shape of outer-involucre, corniculate appandage. Within one population, these characters were very various and were overlapped. The result of cluster analysis using morphological character showed that all species were clustered into four groups (Korean species & T. japonicum group, T. platycarpum subspecies group, T. platycarpum subsp. hodense group, T. formosanum group). Korean species, T. hallaisanense (diploid) and T. ohiwanum (diploid, triploid) were clustered into T. japonicum that was occurred in Kansai provinces of Japan. Therefore, we could infer that Korean species was closely related to Japanese T. japonicum of Japanese species.
Keywords
Taraxacum; capitulum character; cluster analysis; diploid; Korean species; East Asia;
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