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The Establishment of a Standard SSR System Fitting for Pear Germplasm Management
Seolah Kim,Youngjae Oh,Hyunsuk Shin,Hyoundae Han,Yoon-Kyeong,Kim, Nahla Bassil,Daeil Kim 한국육종학회 2014 한국육종학회 심포지엄 Vol.2014 No.07
Pear (Pyrus spp.) is one of the most important temperate fruit species in the world. The identification of Pyrus spp. based on analysis and comparison of their phenotypes has been causing a number of synonyms and homonyms among Pyrus spp. For accurate identification, genotype analysis with molecular marker such as microsatellite is necessarily to use. However, It is difficult to share and compare of microsatellite profiles obtained among different laboratories because no effort has made to standardize equipment or protocols. A strategy for data comparison by dint of reference to the alleles detected in well-known cultivars will be helpful for co-work with laboratories and developing international databases. Thus the study was performed to compare results between laboratories of microsatellite DNA profiling for reproducibility and standardize allele scoring by defining reference alleles efficiently. In this study, ninety pear species including forty-four comparison Asian pears, six of comparison suspicious Asian pears and reference pears, seven basic pear species, and twenty-seven Korean native pear cultivars to development of a standard set of SSR reference alleles. Twelve primers covering most of pear genome were chosen, which are CH02b10, CH03g07, CH04e03, CH03d12, EMPc117, CH01f07a, EMPc11, CH01d09, GD147, CH01d08, CH05c06, and GD96 located in pear chromosome of 2, 3, 5, 6, 7, 10, 11, 12, 13, 15, 16, and 17 respectively. Genotyping was conducted with Fragment Analyzer. After genotyping, a set of defined standard alleles based on reference pear cultivars can facilitate data comparison among laboratories and will permit the improvement of a common international database.