현장농수산연구지 (Journal of Practical Agriculture & Fisheries Research)

국립한국농수산대학교 교육개발센터 (Korea National University of Agriculture and Fisheries)
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벼 유전자원의 저온 발아성에 대한 표현형 및 유전형 특성 평가

Phenotypic and Genotypic Evaluation of Rice Germplasm for Low Temperature Germinability

  • 현도윤 (국립한국농수산대학교 작물산림학부) ;
  • 최유미 (국립농업과학원 농업유전자원센터) ;
  • 이수경 (국립농업과학원 농업유전자원센터)
  • Hyun, Do Yoon (Department of Crops and Forestry, Korea National University of Agriculture & Fisheries) ;
  • Choi, Yu Mi (National Agrobiodiversity Center, NAS, RDA) ;
  • Lee, Su Kyeung (National Agrobiodiversity Center, NAS, RDA)
  • 투고 : 2022.09.24
  • 심사 : 2022.10.11
  • 발행 : 2022.10.20
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초록

Low-temperature germinability (LTG) is an important trait for the direct seeding of rice in temperate and high altitudes regions. Water temperature of rice fields at sowing season is frequently under 15℃ in Korea, resulting in poor seedlings establishment. The objective of this study was to phenotypically and genetically evaluate 600 rice germplasm composed of six rice subpopulations. In the phenotypic evaluation, aus (AUS) showed the highest visual rating (VR) and germination rate (GR) of 5 and 83.1%, respectively, than other subpopulations. The lowest value of VR (7.1) and GR (53.1%) was observed in aromatic (ARO) subpopulation. Association of the phenotype for LTG with the genotype for qLTG3-1, a major QTL for LTG, and other three SNP markers (LTG_8, qLTG4b-1, qLTG2-6) was conducted. The results suggested that the allele distribution of two markers, qLTG3-1 and qLTG2-6, affects the difference in VR and GR between subpopulations. qLTG4b-1 and LTG_8 were also highly significant with LTG in all subpopulations except that qLTG4b-1 did now show significance in AUS. Therefore, the combination use of these four markers might be effective for evaluation of LTG in rice germplasm.

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과제정보

본 연구는 농촌진흥청 국립농업과학원의 연구과제(Project No. PJ010871) 지원을 받아 수행되었음

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