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A Principal Component Analysis for the Morphological Characters of Diploid and Triploid Populations of Lilium lancifolium in Korea  

Kim, Jong-Hwa (Department of Horticultural Sciences, Kangwon National University)
Jang, Won-Suk (Department of Horticultural Sciences, Kangwon National University)
Kyung, Hea-Yung (Department of Horticultural Sciences, Kangwon National University)
Xuan, Yonghao (Department of Horticultural Sciences, Kangwon National University)
Davaasuren Yesun Erdene (Department of Horticultural Sciences, Kangwon National University)
Sim, Eun-Jo (Department of Horticultural Sciences, Kangwon National University)
Lee, Ju-Kyong (Division of Bio-resources Technology, Kangwon National University)
Choi, Yong-Soon (Division of Biotechnology, Kangwon National University)
Michikazu Hiramatsu (Laboratory of Horticultural Science, Faculty of Agriculture, Graduate School, Kyushu University)
Kim, Kiu-Weon (Department of Horticulture, Yeungnam University)
Yoo, Ki-Oug (Division of Life Sciences, Kangwon National University)
Publication Information
Korean Journal of Plant Resources / v.19, no.2, 2006 , pp. 300-307 More about this Journal
Abstract
To clarify the morphological and geographical differentiation among the polyploid complexes of L. lancifolium collections in Korea, the mo게hological variation of 173 accessions were analyzed by ANOVA (one-way analysis of variance) and PCA (principal component analysis) on the basis of 38 morphological characters. 173m accessions were grouped into 78 diploids and 95 triploids by ploid levels and the triploids separated into 75 inland triploids (all around the Korea) and 20 island triploids (Backryung-do and Sochung-do, westemmost and northernmost islands of Korea) by geographic distribution and morphology. Island triploids showed significant morphological differences with inland triploids in ANOVA by many floral and leaf characters. In PCAs, diploids were separated from inland triploids by having longer plant height, smaller flower characters, higher pollen fertility and more stomata. The first four principal components accounted for 44.1% of the total variation. Plots of the island and inland groups for the first and second principal components separated each other with slight overlapping. Although the ploid forms are different between diploid and island triploid, island triploids were more closely overlapped with diploids by principal component 1 and 2 than inland triploids. This reflects that the whole external morphology of island triploids are similar to that of diploids. This, the phenotypic differentiation between inland and island triploids seems to be partly related to their geographical origins.
Keywords
Lilium lancifolium; Geographic differentiation; Morphological variation; Principal component analysis;
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