한국작물학회지 (KOREAN JOURNAL OF CROP SCIENCE)

  • 제55권2호
  • /
  • Pages.105-110
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  • 2010
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  • 0252-9777(pISSN)
  • /
  • 2287-8432(eISSN)
한국작물학회 (The Korean Society of Crop Science)
권호 표지

벼멸구 저항성과 도복관련 형질과의 관계분석

Analysis of Relationship between Resistance of Brown Planthopper and Traits Related to the Lodging in Rice

  • 김석만 (경북대학교 농업생명과학대학) ;
  • 친양 (경북대학교 농업생명과학대학) ;
  • 손재근 (경북대학교 농업생명과학대학)
  • Kim, Suk-Man (Department of Agronomy, Kyungpook National University) ;
  • Qin, Yang (Department of Agronomy, Kyungpook National University) ;
  • Sohn, Jae-Keun (Department of Agronomy, Kyungpook National University)
  • 투고 : 2009.07.08
  • 발행 : 2010.06.30
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초록

도복과 관련된 주요 형질인 초장, 3절간장, 좌절중 등에 대한 QTL을 분석을 수행하였으며 도복과 벼멸구 저항성과의 연관 관계에 대한 QTL 및 유의성을 분석하였다. 1. 초장, 3절간장, 모멘트, 도복지수, 좌절중과 같은 도복관련 형질에 대한 QTL을 분석하여 총 13개의 유의성 있는 QTL이 6개의 염색체상에서 확인되었다. 2. 벼멸구 저항성과 주요 농업형질관련 QTL과의 연관관계를 분석한 바, 7번과 8번 염색체 상의 qBPR7, qBPR8은 각각 모멘트(qMo7)와 도복(q3rdin8) 관련 QTL에 연관되어 있었다. 3. Mapping 집단을 저항성 계통군과 감수성 계통군으로 나누어 8개 형질에 대한 차이를 조사한 바, 3절간장과 도복 지수에서 두 집단간에 유의성이 인정되었다. 4. 저항성을 가지는 계통은 간장 및 3절간장 등이 ‘삼강’의 영향으로 ‘낙동’에 비하여 짧은 경향이었으며 이는 신장과 관련된 도복성향에 있어 본 집단에서는 벼멸구 저항성이 강하게 연관이 되었다는 분석결과를 찾을 수 없었다.

This study was conducted to analyze the relationships between resistance of brown planthopper and traits related to the lodging in rice. For the linkage analysis of traits tested in this study, a genetic linkage map was created with 162 DNA markers spanning 12 rice chromosomes based on 120 doubled haploid (DH) lines, which were derived from a cross between Samgang', a Tongil type cultivar with BPH resistance, and ‘Nagdong’, a japonica cultivar. QTLs were identified to analyze the agronomic traits including lodging by composite interval mapping. Thirteen QTLs were detected for five traits comprised of plant length (PL), 3rd internode length (3rdIL), moments (Mo), lodging index (LI), and breaking weight (BW). The relationships between the BPH resistance and agronomic traits including lodging revealed that two QTLs (qBPR7, qBPR8) were linked to traits related to lodging. Two QTLs, qBPR7 and qBPR8 on chromosome 7 (RM531-7042) and 8 (RM1148- RM544) showed associations with moments and 3rd internode length, respectively.

키워드

참고문헌

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