뽕나무속 식물의 ITS 영역 염기서열 분석 = Analysis of ITS Nucleotide Sequences in Ribosomal DNA of Morus Species

다국어 초록 (Multilingual Abstract)

Nucleotide sequence in internal transcribed spacer (ITS) regions of ribosomal DNA among mulberry varieties (Morus species) were analyzed in order to identify the possibility of classification for the species. The variations in the ITS regions were compared among 9 mulberry varieties and doe variety of Cudrania species as an outgroup. ITS 1 region of the varieties ranging from 219 to 220 bp in length was 49-50 bp shorter than ITS 2 region. Of 510 sites in the ITS 1 and 2 regions, 148 sites were potentially variable, of which 52% and 48% sites were distributed in ITS 1 and ITS 2 regions, respectively. By pairwise comparisons on the nucleotide sepuences in the ITS 1 and 2 regions among 9 mulberry varieties, they were lassified into 5 groups. Diergence values of the sequences, however, were considerably low ranging from 0 to 1.3%. Especially, there was no divergence among Backasipmunja, Chungilppong and Milsungppong and Jungyasang, Ssarigol II and Yulbon, respectively.