Genetic variation and population structure ofCarex breviculmis (Cyperaceae) in Korea |
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| Authors: | Man Kyu Huh Hak Young Lee Shambhu Nath Mishra Hong Wook Huh |
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| Institution: | (1) Plant Germ Institute, Graduate School of Agriculture, Kyoto University, Nakajo 1, Mozume-cho, 617-0001 Mukoh, Japan;(2) Department of Biology, Chunnan National University, 500-757 Kwangju, Korea;(3) Department of Genetics and Plant Breeding, Govind Ballabh Plant University of Agriculture & Technology, 263145 Pantnagar, India;(4) Department of Biology Education, Pusan National University, 609-735 Pusan, Korea |
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| Abstract: | We determined the genetic diversity and population structures ofCarex breviculmis (Cyperaceae) populations in Korea, using genetic variations at 23 allozyme loci.C. breviculmis is a long-lived herbaceous species that is widely distributed in eastern Asia. A high level of genetic variation was found
in 15 populations. Twelve enzymes revealed 23 loci, of which 11 were polymorphic (47.8%). Genetic diversity at the speciesand
population levels were 0.174 and 0.146, respectively. Total genetic diversity (HT = 0.363) and within-population genetic diversity (Hs = 0.346) were high, whereas the extent of the population divergence was relatively low (GST = 0.063). Deviation from random mating (Fis) within the 15 populations was 0.206. An indirect estimate of the number of migrants
per generation(Nm = 3.69) indicated that gene flow was extensive among Korean populations of this species. Analysis of fixation indices revealed
a substantial heterozygote deficiency in some populations and at some loci. Genetic identity between popu-lations was high,
exceeding 0.956. |
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| Keywords: | Carex breviculmis genetic diversity population structure |
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