KOREAN JOURNAL OF CROP SCIENCE (한국작물학회지)

The Korean Society of Crop Science (한국작물학회)
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Expression of Pigments in Black Rice during Kernel Development

흑미의 종자 발달에 따른 색소발현 양상

  • 이점식 (농촌진흥청 국립식량과학원) ;
  • 장재기 (농촌진흥청 국립식량과학원) ;
  • 천아름 (농촌진흥청 국립식량과학원) ;
  • 정명근 (강원대학교 생약자원개발학과) ;
  • 김혜원 (농촌진흥청 국립식량과학원) ;
  • 오세관 (농촌진흥청 국립식량과학원) ;
  • 이정희 (농촌진흥청 국립식량과학원) ;
  • 윤미라 (농촌진흥청 국립식량과학원) ;
  • 김대중 (농촌진흥청 국립식량과학원) ;
  • 송유천 (농촌진흥청 국립식량과학원 기능성작물부)
  • Received : 2012.04.14
  • Accepted : 2012.06.12
  • Published : 2012.06.30
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Abstract

In this study we examined the changes in expression of pigments in black rice during kernel development, which were sampled at 2~3-day intervals to the 40th day after flowering. The first expression of pigment on kernels was observed on the seed coat about 5 days after flowering. At that times, the ratio of pigment expression was 0.08% of total area. The order in expression of pigments in black rice during kernel development was top first, followed by bottom, dorsal side, then ventral side. Maximum percentage of the total colored area in kernel was about 25 days after flowering. After that, the color has changed to dark purple from pale purple during kernel development after flowering. After harvesting, the non-uniform color kernels were observed. As a result, the ventral side in a kernel was a position of the non-uniform color such as a mixture of pale purple and dark purple. Also, we could be concluded that patten of pigment expression was similar in kernel development.

본 연구는 흑미의 종자 발달에 따른 색소발현 현상을 조사하여 품종육성 및 재배법의 기초자료를 제공하기 위해 최초 어느 시기에 색소가 발현하고, 이러한 색소의 발현순서와 종자 내에서 색깔의 차이가 나타나는 부위에 대해 시험한 결과는 다음과 같다. 최초 색소발현은 개화 후 5일경에 종자의 정단에서 연한적자색을 관찰 하였으며, 이때 색소가 발현된 정도는 종자의 총 단면적 대비 0.08%였다. 색소발현 순서는 종자의 정단에서 기부로, 그리고 배면에서 마지막에는 복면 순이었으며, 색소가 종자 전체에 발현된 시점은 개화 후 25일 경이었다. 그 이후는 색이 적자색에서 흑자색으로 진해지는 시기였다. 수확 후 가시적인 종자 간 및 종자 내 색소발현이 불균일한 것을 골라 조사한 결과, 종자 내 복면부위가 다른 부위에 비해 상대적으로 연한 적자색을 띠었으며, 종자의 색소발현이 불균일한 부위는 복면 부위였다.

Keywords

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  2. Effects of Different Nitrogen Levels and Planting Densities on the Quality and Yield of the Black Rice Cultivar ‘Shinnongheugchal’ vol.61, pp.2, 2016, https://doi.org/10.7740/kjcs.2016.61.2.079