Journal of Life Science (생명과학회지)

Korean Society of Life Science (한국생명과학회)
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Determination of Seed Purity in Radish (Raphanus sativus L.) Using Allozyme

알로자임에 의한 무 씨의 순수성 검증

  • Huh, Man-Kyu (Department of Molecular Biology, Dong-eui University)
  • 허만규 (동의대학교 분자생물학과)
  • Published : 2008.07.30
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Abstract

Radish (Raphanus sativus L.) is one of very important crop plants in the world. It is very important to determine hybrid seed quality in the production of hybrid Brassica vegetable seeds to avoid unacceptable contamination with self-inbred (sib) seeds. The allozyme for evaluating seed purity in a commercial $F_1-hybrid$ radish cultivar is demonstrated. Three hundred sixty seeds from the male and female harvest were subsequently screened for seed purity using 27 isozyme loci. Especially, F1 hybrids of radish, Per-1 ($aa{\times}bb$), Lap-1 ($aa{\times}bb$), Est-1 ($aa{\times}bb$) were presented clear hybrid bands. Est-1 locus revealed that 15 (8.3%) seeds from the female harvest and 26 (14.4%) seeds from the male harvest were sibs. It maintains higher than average level of genetic diversity compared with their correspondent parents. Shannon's index of phenotypic diversity (I) of hybrids was the highest of all accessions (R. sativus L. cv. Daepeng, R. sativus L. cv. Backza, and their hybrids). The allozyme may lead to a better insight into the hybrid seed purity.

무(Raphanus sativus L.)는 세계적으로 중요한 작물 중의 하나이다. 십자화과 식물 종자 생산에서 원하지 않은 내교잡에 의한 종자 결실로 오염이 발생하므로 씨의 순수성 검증은 매우 중요하다. 재배종 진주 대평 무(R. sativus cv. Daepeng)와 백자 무(R. sativus cv. Backza)의 교잡 분석을 실시하였다. 알로자임으로 상업적으로 이용되는 잡종 제1세대($F_1$) 무에 있어서 씨의 순수성을 평가하였다. 웅성과 자성 양친 360개체에 27개 대립유전자좌위를 조사하였다. 특히 Par-1 ($aa{\times}bb$), Lap-1($aa{\times}bb$), Est-1 ($aa{\times}bb$)에서 명확한 잡종 밴드를 나타내었다. Est-1 대립유전자좌위에서 자성 배우체로부터 기원된 것이 15개체(8.3%)가 발견되었고, 웅성 배우체로부터 기원된 것이 26개체(14.4%)가 발견되었다. 또한 다양도 측면에서 양친 계통에 비해 잡종 계통에서 높은 유전적 다양도를 유지하고 있었다. 샤논의 정보지수(Shannon's index)를 이용한 표현형 다양도는 교잡 계통이 가장 높았다. 알로자임에 의한 무 계통의 교잡에 의한 종자 생성에서 씨에 대한 순수성 검증이 효과적으로 탐지되어 육종 연구에 기여할 수 있을 것으로 판단된다.

Keywords

References

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