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농촌진흥청 국립농업과학원 농촌진흥청 국립농업과학원 씨앗은행   RDA GeneBank

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핵심집단 소개

핵심집단 유전연구집단

핵심집단(core collection)이란 모집단의 유전적 다양성을 대표하도록 최소한의 자원으로 구성한 집단입니다(Frankel 1984).

여기서 제공하는 핵심집단은 모집단, 개발방법 및 개발자별로 다를 수 있습니다.


Frankel (1984) defined a core collection as a limited set of accessions representing, with minimum repetitiveness, the genetic diversity of a crop species and its wild relatives. From the original definition, several operational definitions have been coined (see Brown 1995 and van Hintum et al. 2000).

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핵심집단 목록
핵심집단명 작물 자원수 내용
애호박 유전자원 핵심집단 호박 177 애호박 유전자원 모집단은 2019년 인도네시아 4세대 자원 QU001부터 QU483까지 (중간에 누락된 것을 제외하고) 244 계통과 국내의 2019년 세대 TR001부터 TR144까지 (중복을 허용하여) 393 계통, 총 647 계통을 사용하였다. 이중에서 실험 과정 중 탈락된 것을 제외하고 호박자원 총 615 계통의 GBS 분석이 이루어졌다. Powercore 1.0 소프트웨어를 사용하여 호박 유전자원 615점, 3,923 개 SNP를 이용하여 비가중이웃연결 방법 계통도를 기반으로 나눠진 4개의 그룹으로부터 각 그룹별 핵심자원을 선발하였는데, 총 78개의 계통이 핵심집단으로 선발되었다. 기존 타작물에서 연구된 선례에 근거하여 핵심자원의 크기는 실험에 사용한 유전자원수의 10% 내외를 예상하였으나 실데로는 약 12.6%인 78 계통이 핵심자원으로 선발되었다 Powercore가 선발한 78개 핵심자원을 보강하기 위하여 나머지 자원에서 농업적 형질과 소비자 형질 등을 고려하여 106 계통을 추가하여 총 181계통의 ‘호박 핵심집단 (HC)’를 구성하였다. Powercore 선정 핵심집단 중 종자 발아문제로 453(TR114-2), 552(TR46-3), 620(TR135-3)이 결번되었다
한국형 밀 핵심집단 밀 609 Wheat (Triticum aestivum) is one of the three major food crops, along with rice and corn, and is the second most consumed crop after rice in Korea. However, the domestic production of wheat is insufficient, and the self-sufficiency rate is recorded in single digits. As wheat has a large genome size of 17 Gbp, and contains many repeated nucleotide sequences, it is difficult to conduct breeding studies and genome-based breeding lags behind that of other crops. To overcome the above challenges, we constructed a wheat core collection using simple sequence repeat markers that are suitable for the domestic cultivation environment with excellent reproducibility. Genetic diversity and population structure were analyzed using a core collection. Agricultural traits were evaluated in the Korean wheat core collection. Single marker analysis was correlated with 21 agricultural traits to identify potential molecular markers. These results may be useful for wheat breeding programs in the precision breeding era.
고추 유전자원 핵심집단 고추 342 고추 핵심집단은 처음에 240자원(관련문헌 참조)으로 구성되었으나, 이후 다양성 자원을 추가 하여 개발하였음
토마토 핵심집단 토마토 172 A core collection of 192 tomato accessions representing contemporary breeding lines, vintage varieties, and wild species. Phenotypic variations in this collection were evaluated for six traits including fruit shape, fruit color, pericarp thickness, fruit weight, fruit height, and fruit width over two years in field trials. Genotyping by sequencing (GBS) detected a total of 140,072 SNPs in the core collection and 8,550 SNPs were selected based on missing data rate (<20%) and minor allele frequency (≥5%) for GWAS.
무 핵심집단 무 50 The assembly of a radish core collection consisting of 125 accessions. These accessions were selected by using 25 sequence-tagged site insertion/deletion markers to genotype 70 alleles in 886 accessions obtained from three germplasm banks in Korea, Japan, and Germany. An unweighted pair-group method with arithmetic mean (UPGMA) analysis of the genotyping data classified the accessions into 125 groups based on a Jaccard’s similarity coefficient of 0.72. One representative accession from each group was selected for a core collection that included 125 accessions, corresponding to 14.1% of the whole collection and including all 70 alleles.
동부 핵심집단(GWAS분석 모집단) 동부 384 A total of 384 cowpea accessions from 21 countries were genotyped with the Cowpea iSelect Consortium Array containing 51,128 single-nucleotide polymorphisms (SNPs). After SNP filtering, a genetic diversity study was carried out using 35,116 SNPs within 376 cowpea accessions, including 229 Korean accessions.
땅콩 핵심집단(내염성 GWAS분석 모집단) 땅콩 269 Seventy-four Korean accessions and the US core collection were obtained from the RDA-GenBank Information Center, South Korea and the US Department of Agriculture, respectively.
녹두 핵심집단 녹두 189 In the present study, we construct a draft genome of the cultivated mungbean (V. radiata var. radiata VC1973A) on a chromosomal scale. For detailed understanding of domestication, polyploidization and speciation in the genus Vigna, whole-genome sequences of a wild relative mungbean (V. radiata var. sublobata) and of a tetraploid relative of mungbean (V. reflexo-pilosa var. glabra), as well as transcriptome sequences of 22 Vigna accessions of 18 species are produced.
한국 콩 핵심집단(Korean soybean core collection) 재배콩 및 야생콩 834 The Korean soybean core collection consisted of 430 accessions selected from 2,872 collections based on Affymetrix Axiom® 180k SoyaSNP array data. The core collection represented 99% of genotypic diversity of the total collection. Analysis of population structure clustered the core collection into five subpopulations. Accessions from South Korea and North Korea were distributed across five subpopulations. Analysis of molecular variance indicated that only 2.01% of genetic variation could be explained by geographic origins while 16.18% of genetic variation was accounted for by subpopulations.
벼 핵심집단 (Korean rice core set, KRICE_CORE) 벼 417 Korean rice core set (KRICE_CORE) that represents 25,604 rice germplasms deposited in the Korean genebank of the Rural Development Administration (RDA). We implemented the Illumina HiSeq 2000 and 2500 platform to produce short reads and then assembled those with 9.8 depths using Nipponbare as a reference.