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http://dx.doi.org/10.14578/jkfs.2014.103.4.519

Breeding System and Allozyme Genetic Diversity of Deutzia paniculata Nakai, an Endemic Shrub in Korea  

Chang, Chin-Sung (Department of Forest Sciences and The Arboretum, Seoul National University)
Kim, Hui (Department of Medicinal Plants Resources, Mokpo National University and Institute of Oriental Medicine)
Publication Information
Journal of Korean Society of Forest Science / v.103, no.4, 2014 , pp. 519-527 More about this Journal
Abstract
Deutzia paniculata is an endemic species, which is geographically restricted within southern part of Korea. Four populations of D. paniculata were sampled across its natural range, from the smallest population, Mt. Dalum, which held less than 100 individuals, to the largest, Mt. Unmum, over 3,500 individuals. Artificial pollination study showed that D. paniculata had an obligate outcross breeding system. Major pollinators were two bee species, Lasioglossum exiliceps and Allograpta balteata (de Geer). The breeding system and patterns of allozyme variation of D. paniculata were investigated to understand the population biology and to explain on reserve designs and management proposals relevant to this species. D. paniculata held relatively low genetic variation at the eight allozyme loci surveyed. Measures of genetic variation in this species alleles per locus ($A_s=1.33$), proportion of polymorphic loci (P=23.85%), and expected heterozygosity ($H_{es}=0.110$) were similar to values reported for endemic species. Mt. Dalum population (DAL) was composed with one clone based on allozyme data. Individuals of D. paniculata were frequently included in root connected clusters. Population genetic structure between and within four populations was probably the result of shrinking effective population size and the extinctions of intervening populations. For the conservation of genetic diversity, maximum number of different genotype need to be protected based on genetic structure and mating system.
Keywords
allozyme; breeding system; Deutzia paniculata; endemic; genetic diversity;
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