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무기계 자기치유 환을 혼입한 모르타르의 균열치유 성능 평가
김혁준 ( Kim Hyuk-jun ),양근혁 ( Yang Keun-hyeok ),윤현섭 ( Yoon Hyun-sub ) 한국건축시공학회 2021 한국건축시공학회 학술발표대회 논문집 Vol.21 No.1
The present study aims to examine the practical potentials of crack self-healing pillet produced using inorganic materials.
분자마커 이용 여교잡 육종을 위한 토마토 유전자원 평가 및 SSR 마커 개발
황지현(Ji-Hyun Hwang),김혁준(Hyuk-Jun Kim),채영(Young Chae),최학순(Hak-Soon Choi),김명권(Myung-Kwon Kim),박영훈(Young-Hoon Park) 한국원예학회 2012 원예과학기술지 Vol.30 No.5
This study was conducted to achieve basal information for the development of tomato cultivars with disease resistances through marker-assisted backcross (MAB). Ten inbred lines with TYLCV, late blight, bacterial wilt, or powdery mildew resistance and four adapted inbred lines with superior horticultural traits were collected, which can be useful as the donor parents and recurrent parents in MAB, respectively. Inbred lines collected were evaluated by molecular markers and bioassay for confirming their disease resistances. To develop DNA markers for selecting recurrent parent genome (background selection) in MAB, a total of 108 simple sequence repeat (SSR) primer sets (nine per chromosome at average) were selected from the tomato reference genetic maps posted on SOL Genomics Network. Genetic similarity and relationships among the inbred lines were assessed using a total of 303 polymorphic SSR markers. Similarity coefficient ranged from 0.33 to 0.80; the highest similarity coefficient (0.80) was found between bacterial wilt-resistant donor lines ‘10BA333’ and ‘10BA424’, and the lowest (0.33) between a late blight resistant-wild species L3708 (S. pimpinelliforium L.) and ‘10BA424’. UPGMA analysis grouped the inbred lines into three clusters based on the similarity coefficient 0.58. Most of the donor lines of the same resistance were closely related, indicating the possibility that these lines were developed using a common resistance source. Parent combinations (donor parent × recurrent parent) showing appropriate levels of genetic distance and SSR marker polymorphism for MAB were selected based on the dendrogram. These combinations included ‘TYR1’ × ‘RPL1’ for TYLCV, ‘10BA333’ or ‘10BA424’ × ‘RPL2’ for bacterial wilt, and ‘KNU12’ × ‘AV107-4’ or ‘RPL2’ for powdery mildew. For late blight, the wild species resistant line ‘L3708’ was distantly related to all recurrent parental lines, and a suitable parent combination for MAB was ‘L3708’ × ‘AV107-4’, which showed a similarity coefficient of 0.41 and 45 polymorphic SSR markers.