KOREAN JOURNAL OF CROP SCIENCE (한국작물학회지)

The Korean Society of Crop Science (한국작물학회)
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Studies on the Grain Quality Characteristics of Rice Transgenic Lines

벼 형질전환계통의 미질특성에 대한 고찰

  • 정종민 (국립식량과학원 춘천출장소) ;
  • 정지웅 (국립식량과학원 답작과) ;
  • 강경호 (국립식량과학원 답작과) ;
  • 이상복 (국립식량과학원 춘천출장소) ;
  • 모영준 (국립식량과학원 답작과) ;
  • 김정곤 (국립식량과학원 답작과) ;
  • 김경민 (경북대학교 응용생명과학부) ;
  • 손재근 (경북대학교 응용생명과학부)
  • Received : 2013.04.22
  • Accepted : 2013.05.17
  • Published : 2013.06.30
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Abstract

Selected 11 rice transgenic lines, through preliminary yield trials on 32 lines, were evaluated on important agronomic traits as well as grain quality by conducting replicated yield trials having three replication plots. Japonica recipients, Nipponbare, Nagdongbyeo, and Dongjinbyeo, were the recipients of 7 transformed genes, which were putatively related with high yield, abiotic stress tolerance, and disease resistance. To estimate the degrees of deviations from the wild types, 11 traits of transgenic lines, relating with grain quality were evaluated and subjected to multivariate analyses. Principal coordinate and clustering analyses did not support collection manners of transgenic lines in terms of the genes transformed as well as the genetic background. Meanwhile, some transgenic lines would be acceptable due to their over-all performances were similar to their wild types, it was hardly possible to declare any transgenic line, which adhered closely to the commercial profits of wild type. Thereby, with considerations on the demanding resources in establishing rice transgenic lines having market competitiveness, it was speculated that proper application of breeding strategies would be crucial factor for the efficiency of developing prospective rice transgenic lines.

국내 대학과 국립식량과학원 간의 협력 연구를 통해 확보된 32개 벼 형질전환 계통들 중 작물학적 성능이 유망한 11개 계통들에 대해 작물학적 특성과 미질 특성이 평가되었다. 주요 결과는 아래와 같다. 1. 이들 계통들은 수량성, 환경스트레스저항성, 내병성에 관여하는 7종의 유전자가 니폰바레, 낙동벼, 동진벼 등에 형질전환 되어 육성된 계통들이다. 2. 미질 특성과 관련된 11개 조사형질을 이용한 다변량 분석결과, 형질전환에 이용된 모품종과 도입유전자들에 대한 각 형질전환 계통군들의 뚜렷한 집구현상은 관찰되지 않았다. 3. 실용적 측면에서는 작물학적 특성이 모품종과 유사하면서 미질 특성이 양호한 계통이 다수 확인되었다. 4. 그러나 모품종의 유용한 작물학적 특성, 즉 '상품성'을 온전히 견지하고 있다고 판단되는 계통은 선정하기 어려웠다. 5. 도입할 유전자의 선정과 유전적으로 고정된 형질전환 계통을 확보하는데 소요되는 경비와 시간을 고려할 때, 향후 우량 벼 형질전환 계통의 육성효율을 제고하기 위해서는 기존에 비해 보다 구체적이며 차별화 된 육종전략의 개발이 필요하다고 판단되었다.

Keywords

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