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Korean J. Pl. Taxon > Volume 43(2); 2013 > Article
Korean Journal of Plant Taxonomy 2013;43(2): 106-117.
doi: https://doi.org/10.11110/kjpt.2013.43.2.106
한국산 양지꽃족(Tribe Potentilleae; Rosaceae) 식물의 털과 표피상 납질의 분류학적 중요성
허경인 , 이상룡 , 유만희 , 이상태 , 권율 , 임소연 , 김선희 , 김승철
The taxonomic implication of trichome and epicuticular waxes in tribe Potentilleae (Rosaceae) in Korea
Kyeong In Heo, Sang Ryong Lee, Man Hee Yoo, Sang Tae Lee, Youl Kwon, So Yeon Lim, Seon Hee Kim, Seung Chul Kim
Abstract
Using scanning celctron microscope(SEM), we examined the trichomes on leaf and petiole and the epicuticular waxes on leaf surfaces for a total of 27 taxa representing two subtribes, Fragariinae and Potentillinae, of tribe Potentilleae (Rosaceae) in Korea. Four types of trichomes on adaxial and abaxial surface of leves and petioles were identified. Type I (conical hirtellous) is the most common trichome type found in the majority of taxa in Fragariinae and Potentillinae. Type Ⅱ (verruculose conical hirtellous) can be found only in Potentilla cryptotaeniae of sect. Conostylae of Potentilinae. Potentilla chinensis complex (sect. Conostylae) and P.egedii(sect. Letostylae) have type Ⅲ trichome (crispate villous), while type Ⅳ(floccose villous) can be found in two species in sect. Conostylae, P. niva and P. discolor. Both woolly hairs and conical hirtellous exist together in types Ⅲ and Ⅳ. The same type of trichomes in leaves and petioles can be found across different subtribes and sections. In addition, different types of trichomes can be found even in a single species. Among the taxa which have type I trichome, the majority of subtribe Fragariinae and P. centrigrana and P. dickinsii complex have well developed epicuticular waxes on the surface on leaves. Sharing epcuticular waxes among the taxa across different subtribes appears to be correlated with their similar geographical distribution and ecological conditions. However, molecular phylogenetic study implies that the existence of epicuticular waxes could be also due to phylogenetic signal.
KeyWords: tribe Potentilleae, epicuticular waxes, trichome of leaf and petiole, SEM, Rosaceae
주요어: 양지꽃족, 표피상납질, 잎과 엽병의 털, 주사전자현미경, 장미과
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