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Genetic and Morphological Relationship among Korean Hylotelephium Species(Crassulaceae)  

Lee, Seung-Hoon (Department of Biology, Kyung-Nam University)
Park, Ki-Ryung (Department of Biology, Kyung-Nam University)
Publication Information
Korean Journal of Plant Taxonomy / v.36, no.4, 2006 , pp. 293-308 More about this Journal
Abstract
Genetic and morphological studies using morphological and isozymic data from 20 populations of 6 Korea Hylotelephium were conducted to resolve the species relationships and the origin of polyploid species. The results of morphological studies suggest that triploid H. viviparum is closely related to H. verticillatum, and the high frequency alleles of two species were very similar each other in isozyme analyses. Unique fixation of $PGI-1^b$ in two species supports that H. verticillatum should be the diploid ancestor of H. viviparum. However, a unique $ALD-1^c$ allele is present in H. viviparum, and the lack of the common alleles of H. erythrostictum and H. spectabile in this species eliminated them from the candidates of another tetraploid ancestor of H. viviparum. Based on the high morphological and genetic similarities, our results supported that the Korea endemic H. viridescens might be originated from the H. erythrostictum or share a common ancestor with it. Besides, H. ussuriense is closely related with H. erythrostictum and H. viridescens.
Keywords
Hylotelephium; isozymic data; morphology; species relationships;
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