Heo, Kyeong-In , Lee, Sangtae , KIM, SEUNG-CHUL .
Systematic studies of the genus Potentilla s.l. (Rosaceae) in Korea.
The phylogeny of Korean Potentilla s.l. was studied based on nrDNA ITS sequences as well as morphology and palynology. For the ITS phylgeny, we analyzed a total of 19 species and one variety of Korean Potentilla s.l., and additional species from GenBank database were included in this study. The ITS phylogeny suggests that Potentilla s.l. is monophyletic, and two major clades were identified. One clade includes taxa treated as segregate genera (i.e., Comarum, Argentina, Dasiphora; Potentilla sunsu Wolf, 1908) as well as Fragaria. The other clade includes species of Potentilla s.s. and Duchesnea (Hutchinson, 1964). Potentilla anserina which has been treated as Argentina is included in the former clade, but in pollen and leaf surface characters it has similar characters to taxa of Potentilla s.s. Fragaria and Dasiphora are diverged within the former clade. The pollen characters and the style shape support a close relationship between two genera. However, P. bifurca var. major of ser. Bifurcae (Dasiphora) and Fragaria x ananassa have pollen characteristics of Potentilla s.s. The taxa of Duchesnea, which often has been treated as independent genus, are part of Potentilla s.s. clade. In addition, the pollen morphology suggests inclusion of Duchesnea in Potentilla s.s. These results are congruent with the two clades recognized by Erisson et al. (2003). The former and latter clade corresponds to Fragariinae and Potentilla s.s., respectively. However, these molecular, palynological, and morphological results support that taxa treated as independent genera, Comarum, Argentina, Dasiphora, Duchesnea, and Fragaria, should be included in Potentilla s.l. The monophyly of sections of Potentilla s.l. is not supported, but series are monophyletic except for P. centigrana of ser. Kleinianae of sect. Conostylae, which is deeply nested within ser. Eriocarpae of sect. Nematostylae.
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1 - Sungkyunkwan University, Department Of Biological Sciences, 300 Cheoncheon-Dong, Jangan-Gu, Suwon, N/A, 440-746, Korea
2 - Sungkyunkwan University, Biological Science, Cheoncheon Dong 300, Jangan Gu, Suwon, Gyeonggi , 440-746, South Korea
Presentation Type: Poster:Posters for Sections
Location: Khorassan Ballroom/Chase Park Plaza
Date: Monday, July 11th, 2011
Time: 5:30 PM