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http://dx.doi.org/10.5352/JLS.2007.17.9.1217

Comparison of Reproduction Systems of Genus Potentilla, Potentilla discolor in Korea and P. conferta in Mongol  

Huh, Man-Kyu (Division of Molecular Biology, Dongeui University)
Publication Information
Journal of Life Science / v.17, no.9, 2007 , pp. 1217-1223 More about this Journal
Abstract
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 consid-ering several characters simultaneously of variances using the statistical analysis system. 19 morpho-logical 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 ra-mets in P. conferta decreased with increasing geographic distance from viviparity. However, P. discolor has most ramets at distance intervals $60{\sim}80$ 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 envi-ronmental disadvantages such as drought events.
Keywords
Clonal characteristics; Korean Potentilla species; Mongolian Potentilla species; morphological characters; ramet;
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