Horticultural Science & Technology (원예과학기술지)

Korean Society of Horticultural Science (한국원예학회)
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Construction of a Microsatellite Marker Database of Commercial Pepper Cultivars

유통 중인 고추 품종에 대한 Microsatellite 마커 Data Base 구축

  • Kwon, Yong-Sham (Variety Testing Division, Korea Seed & Variety Service, Ministry of Agriculture, Food and Rural Affairs) ;
  • Hong, Jee-Hwa (Variety Testing Division, Korea Seed & Variety Service, Ministry of Agriculture, Food and Rural Affairs) ;
  • Choi, Keun-Jin (Variety Testing Division, Korea Seed & Variety Service, Ministry of Agriculture, Food and Rural Affairs)
  • 권용삼 (농림축산식품부 국립종자원 재배시험과) ;
  • 홍지화 (농림축산식품부 국립종자원 재배시험과) ;
  • 최근진 (농림축산식품부 국립종자원 재배시험과)
  • Received : 2013.02.26
  • Accepted : 2013.05.15
  • Published : 2013.09.30
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Abstract

This study was carried out to evaluate the suitability of microsatellite markers for varietal identification and genetic relationship of 170 commercial pepper cultivars. The relationship between marker genotypes and 11 pepper cultivars with different morphological traits was also analyzed. Of the 302 pairs of microsatellite primers screened against 11 pepper cultivars, 24 pairs were highly polymorphic in terms of number of alleles. These markers were applied for the construction of DNA profile data base for 170 commercial pepper cultivars. A total of 164 polymorphic amplified fragments were obtained from 24 microsatellite primers. The average polymorphism information content was 0.673 ranging from 0.324 to 0.824. One hundred and sixty four microsatellite alleles were used to calculate Jaccard's distance coefficients using unweighted pair group method. A clustering group of varieties, based on the results of microsatellite analysis, were categorized into 3 major groups corresponding to morphological traits. The phenogram discriminated all varieties by markers genotypes. These microsatellite markers will be useful as a tool for protection of plant breeders' intellectual property rights through variety identification in distinctness, uniformity and stability test.

국내에서 최근에 유통되고 있는 고추 170품종을 대상으로 microsatellite 마커를 이용하여 DNA 프로파일 데이터베이스를 구축하기 위하여 품종식별력이 높은 분자표지의 선정 및 이를 활용한 품종 식별력 및 유전적 유사도 검정 등에 대한 연구를 수행하였다. 고추 형태적 특성이 다른 11품종을 302개의 microsatellite 마커로 검정하여 24개의 다형성이 높은 마커를 선정한 다음 170품종에 대한 DNA 프로파일 데이터베이스를 구축하였다. 고추 170품종을 24개의 microsatellite 마커로 분석하였을 때 마커당 평균 대립유전자수는 6.83개로 나타났고, 최소 2개부터 15개까지 다양한 분포를 나타내었다. PIC 값의 경우 0.324-0.873 범위에 속하였으며 평균값은 0.673으로 높게 나타났다. Microsatellite 마커의 대립유전자를 이용하여 고추 170품종에 대한 계통도를 작성하였을 때 과실의 형태에 따라 3개의 그룹으로 크게 나누어졌으며 모든 품종이 microsatellite 마커의 유전자형에 의해 식별이 되는 것으로 나타났다. 이 연구결과에 의해 개발된 고추 품종별 DNA 프로파일 데이터베이스는 품종보호출원 품종의 선 DNA 검정을 통한 대조품종 선정, 구별성, 균일성, 안정성의 재확인에 매우 유용하게 이용되어질 수 있어 향후, 품종보호권 강화 등에 크게 기여할 수 있을 것으로 사료된다.

Keywords

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