-Vaccinium oldhami Miq. is a Korean native tree, which is deciduous and shrub tree with broad leaf. It grows 1∼ 4m in height generally. Ecologically, this tree grows well in shady place even in barren soil. Also, the tree has resistance to cold and dry, which tend to form a little community. This research investigates quantitative morphological characteristics of leaf and fruit among the V. oldhami in South Korea and then considers its relationship on the basis of raw data among the 10 populations. This study will give us invaluable information about growing conditions, reasonable management and breeding by selection of V. oldhami in South Korea. The main results obtained from this study are summarized as follows; Leaf size of Mudeung population was larger than other populations. Naebyeon population was smaller in size of the leaf than other populations. Anmyeondo population was larger in fruit characteristics compared with other populations and Deogyu population was the smallest among populations. According to cluster analysis based on the leaf and fruit morphological characteristics, the natural V. oldhami populations were classified into four groups such as the first group of Kumo population, the second group of Mudeung population, the third group of Anmyundo, Daedun, Doolyun population and the fourth group of the other five populations. Key words -
The objective of this study was carried out to assess genetic diversity of Korean local accessions of wild pear using morphological traits and microsatellite markers. Assessment of 14 phenotypic traits showed high variation among wild pear accessions. These parameters were not applicable genetic diversity analysis of wild pear collection due to quantitatively inherit and their expression is affected by environmental factors. Microsatellite markers were used to evaluate the genetic similarity of 62 accessions. Among 50 tested SSR markers, 16 primer pairs were selected to profile genetic diversity on the basis of high level polymorphism. These microsatellite markers showed 1 or 2 discrete amplified fragment for all of the accessions. The sixteen microsatellite loci amplified 278 alleles, with 10 to 27 alleles (average 17.385) per locus. The mean of observed heterozygosity and polymorphism information content were 0.776 and 0.836, respectively. The Jaccard's similarity coefficient ranged from 0.09 to 1.00. Two major groups were produced from all the accessions by UPGMA cluster analysis. Fifty five accessions could be discriminated except for 2 pairs. These results would be provided useful information about valuable genetic resources though assessment of genetic diversity and relationship in local pear accessions.
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