Browse > Article

Taxonomic Implications of Seed Coat in the Subtribe Calthinae (Ranunculaceae)  

Heo, Kweon (Division of Applied Plant Sciences, Kangwon National University)
Suh, Youngbae (Natural Products Research Institute, Seoul National University)
Publication Information
Korean Journal of Plant Taxonomy / v.38, no.1, 2008 , pp. 1-16 More about this Journal
Abstract
Anatomical features of seed coat were examined on Trollius, Calathodes, and Caltha of Ranunculaceae to evaluate the taxonomic circumscription of Megaleranthis saniculifolia, which is monotypic and endemic in Korea. Megaleranthis saniculifolia showed the exotestal type of seed coat exhibiting a well-developed palisade structure in exotesta and its external surface of exotesta cells was concave. On the other hand, the shape of exotesta cells in Caltha was cuboidal and the outer surface was smooth. The exotesta of Calathodes seeds was formed of the palisade structure like M. saniculifolia, but the outer surface of exotesta cells was smooth. The palisade structure was much better developed in the exotesta of Calathodes as well as Megaleranthis seeds than in the exotesta of Trollius seeds. The outer surface of exotesta cells in Trollius was either convex or concave according to the species examined. Since the genera of the subtribe Calthinae of the family display differences in seed sculpturing and the anaotmy of seed coat, these characteristics are useful to access taxonomic relationships among them. The morphological and anatomical features of seed coat suggest that Megaleranthis be possibly allied with Trollius rather than Caltha or Calathodes. Concave surface of seed coat cells and well-developed palisade structure of exotesta are shared by M. saniculifolia and some species of Trollius in common.
Keywords
Calthinae; endemic species; Megaleranthis; Ranunculaceae; seed coat;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
1 Despres, L., L. Gielly, B. Redoutet and P. Taberlet. 2003. Using AFLP to resolve phylogenetic relationships in a morphologically diversified plant species complex when nuclear and chloroplast sequences fail to reveal variability. Mol. Phylogenet. Evol. 27: 185-196   DOI   ScienceOn
2 Lee, S. T. 1990. On the taxonomic position of Trollius chosenensis Ohwi (Ranunculaceae). Korean J. Pl. Taxon. 20: 1-8 (in Korean)   DOI
3 Lee, W. T. 1969. A discussion on Korean endemic genera plants. Korean J. Pl. Taxon. 1: 15-21 (in Korean)
4 Ohwi, J. 1935. Megaleranthis, genus novum Ranunculacearum. Acta Phytotax. Geobot. 4: 130-131
5 Lee, Y. N. and S. H. Yeau. 1985 Taxonomic characters of Megaleranthis saniculifolia Ohwi (Ranunculaceae). Korean J. Pl. Taxon. 15: 127-131   DOI
6 Tamura, M. 1993. Ranunculaceae. In The Families and Genera of Vascular Plants. Vol. II. K. Kubitzki, J. G. Rohwer and V. Bittrich (eds.), Springer-Verlag, Berlin. Pp. 563-583
7 Corner, E. J. H. 1976. The Seeds of Dicotyledons. Vol. II. Cambridge
8 Kadota, Y. 1996. Ranunculaceae. In Botanical World (Weekly Magazine of Asahi News Paper Co., Japan) 92: 226-234
9 Yoo, K. O., W. T. Lee and Y. J. Oh. 1999. External morphology and vegetation of Megaleranthis saniculifolia populations in four different habitats. Korean J. Plant Res. 12: 312-323 (in Korean)
10 Kapil, R. N. and S. Jalan, 1962. Studies in the family Ranunculaceae. I. The embryology of Caltha palustris L. In Plant Embryology Symposium, New Delhi, India. Pp. 205-214
11 Ro, K. E., H. Y. Han and S. T. Lee. 1999. Phylogenetic contributions of partial 26S rDNA sequences to the tribe Helleboreae (Ranunculaceae). Korean J. Biol. Sci. 3: 9-15   DOI
12 Tobe, H. 1995. Embryology: Ordnung Ranunculales, Family Ranunculaceae. In Die Naturlichen Pflanzenfamilien nebst ihren Gattungen und wichtigsten Arten, Band 17a IV. P. Hiepko (ed.), Duncker & Humblot Verlag, Berlin. Pp, 106-128
13 Tamura, M. 1995. Systematics: Ordnung Ranunculales, Family Ranunculaceae. In Die Naturlichen Pflanzenfamilien nebst ihren Gattungen und wichtigsten Arten, Band 17a IV. P. Hiepko (ed.), Duncker & Humblot Verlag, Berlin. Pp. 225-247
14 Ro, K. E., C. S. Keener and B. A. McPheron. 1997. Molecular phylogenetic study of the Ranunculaceae: utility of the nuclear 26S ribosomal DNA in inferring intrafamilial relationships. Mol. Phylogenet. Evol. 8: 117-127   DOI   ScienceOn
15 Jang, M. Y. and K. Heo. 2005. Reproductive morphology of Megaleranthis saniculifolia Ohwi (Ranunculaceae) and its systematic implications. J. Plant Biol. 48: 128-135   과학기술학회마을   DOI
16 Schmid, R. 1986 On Cornerian and other terminology of angiospermous and gymnospermous seed coats: historical perspective and terminological recommendations. Taxon 35: 476-491   DOI   ScienceOn
17 Kim, M. Y. and S. T. Lee. 1987. Palynotaxonomic relationship of Megaleranthis saniculifolia Ohwi to the relative species (Ranunculaceae). Korean J. Pl. Taxon. 17: 13-20 (in Korean)   DOI
18 Ohwi, J. 1937. Symbolae and Floram Asiae Orientalis 15. Acta Phytotax. Geobot. 6: 151