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KMID : 0613820070170091217
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Journal of Life Science
2007 Volume.17 No. 9 p.1217 ~ p.1223
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Comparison of Reproduction Systems of Genus Potentilla, Potentilla discolor in Korea and P. conferta in Mongol
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Huh Man-Kyu
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Abstract
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I investigated the reproduction system of nine natural populations of P. discolor in Korea and two Mongolian P. conferta populations. The measurements of 19 quantitative or qualitative morphological characters were taken on each of total individuals directly from their natural habitats. Multivariate principal component analyses (PCA) were conducted to detect differences among populations considering several characters simultaneously of variances using the statistical analysis system. 19 morphological characteristics between Korean Potentilla species and Mongolian Potentilla species showed a slight heterogeneity of variance. The length of internodes (LFL and LSI) and characteristics of root (LLR and NOR) were shown a significant difference between two species (P<0.05). The number of ramets in P. conferta decreased with increasing geographic distance from viviparity. However, P. discolor has most ramets at distance intervals 60~80 cm. In light conditions, P. discolor was significantly less resilience than P. conferta. In drought conditions, although there was not shown significant difference, P. conferta was less resilience than P. discolor. The core analysis indicates that P. conferta is the more resistant species than P. discolor and usually propagates by clonal growth during several strong environmental disadvantages such as drought events.
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KEYWORD
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Clonal characteristics, Korean Potentilla species, Mongolian Potentilla species, morphological characters, ramet
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