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Korean J. Pl. Taxon > Volume 43(1); 2013 > Article
Korean Journal of Plant Taxonomy 2013;43(1): 22-26.
doi: https://doi.org/10.11110/kjpt.2013.43.1.22
한국산 사초과 대사초절의 염색체 수
정경숙 , 양종철 , 이유미
Chromosome numbers of Carex section Siderostictae from Korea populations
Kyong Sook Chuang, Jong Cheol Yang, You Mi Lee
Abstract
We report somatic chromosome numbers 2n = 12 for three Carex sect. Siderostictae Franch. ex Ohwi (Cyperaceae) from Korean populations: Carex ciliatomarginata Nakai, C. okamotoi Ohwi, and C. siderosticta Hance. This study is the first chromosome number report for the species C. ciliatomarginata from Korean populations. As found in other Carex species, all the chromosomes examined in the section exhibit nonlocalized centromere (polycentric or holocentric) and large (more than ca. 1 μm long) chromosomes. Considering the basal phylogenetic position of the section in tribe Cariceae Pax, small numbers of large chromosomes have been hypothesized as primitive characters in Cariceae, and our observation supports the hypothesis. Further investigations of chromosomes in Carex are needed for a better understanding of species richness in the genus.
KeyWords: Carex, Chromosome number, Carex sect. Siderostictae, holocentric chromosome
주요어: 사초속, 염색체 수, 대사초절, 전부염색체
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