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Korean J. Pl. Taxon > Volume 51(3); 2021 > Article
Korean Journal of Plant Taxonomy 2021;51(3): 192-197.
doi: https://doi.org/10.11110/kjpt.2021.51.3.192
Chromosome numbers of eight Carex taxa in Korea (Cyperaceae)
Kyong-Sook CHUNG1 , Gyu Young CHUNG2
1Department of Medicinal Plant Science, Jungwon University, Goesan 28024, Korea
2Division of Horticulture and Medicinal Plant, Andong National University, Andong 36729, Korea
Correspondence :  Gyu Young CHUNG ,Email: kchung@jwu.ac.kr, gychung@andong.ac.kr
Received: September 2, 2021  Revised: September 8, 2021   Accepted: September 14, 2021
Abstract
In the flora of Korea, Carex L. is one of the most species-rich genera. Among nearly 157 Carex taxa, less than 30 have had their chromosome numbers reported. We report the meiotic chromosome numbers of eight Carex taxa from Korean populations, which include the first count for C. accrescens Ohwi (n = 37II) and the first chromosome investigations of Korean populations for three taxa: C. bostrychostigma Maxim. (n = 22II), C. lanceolata Boott (n = 36II), and C. paxii Kük. (n = 38II). In most species, chromosome counts observed in the study are included within the variation ranges of previous chromosome numbers. However, C. bostrychostigma Maxim. (n = 22II) and C. planiculmis Kom. (n = 29II) are assigned new chromosome numbers. Carex is known to have holocentric chromosomes, lacking visible primary constrictions and exhibiting great variance in its chromosome number. Further investigations of the diversity of Carex chromosomes will provide basic information with which to understand the high species diversity of the genus.
KeyWords: Carex, meiotic chromosome number, Cyperaceae
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