논문 상세보기
Selection of microsatellite marker set for the analysis of genetic integrity and relationship in rice genetic resources
- 언어ENG
- URLhttps://db.koreascholar.com/Article/Detail/294346
Rice genetic resources are composed of various species and ecotypes, and each accession reveals different genetic and phenotypic characters. For the managenment of diverse rice genetic resources, seed integrity is important factor in that the individuals of one accession in self-pollinating crop might be homogeneous. To elevate the management efficiency of rice germplasm contrary to the phenotypic distinction, we focused on applicable microsatellite markers because this markers are widly used for genetic evaluation in diverse genetic resources with a character of high reproducibility and polymorphism. In this regard, we selected microsatellite markers based on genotypes; diversity set including 150 accessions using 249 SSR markers. As SSR loci with high PIC(polymorphism information content) values usually revealed multi bands in one accession, proper genotyping were difficult in these loci. Therefor, we checked the band clarity in addition to PIC values and chose 12 and 6 SSR markers finally. All accessions of rice diversity set were distinguished with the first marker set comprising 12 SSR markers, and only 3 combinations of tested accessions(0.03%, 3/11,175) showed same genotype with second marker set comprising 6 SSR markers. The tested 142 Korean bred varieties revealed 0.19%(19/10,011 combinations) and 0.69%(69/10,011 combinations) genotypic identity using first and second marker set, respectively. These newly selected markers might be useful for the analysis of genetic homogeneity and relationship in rice genetic resources.
