Korean Journal of Agricultural Science (농업과학연구)

Institute of Agricultural Science, CNU (충남대학교 농업과학연구소)
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Effects of water stress on chemical composition of rice grains

수분 스트레스가 벼의 성분에 미치는 영향

  • Nam, Kyong-Hee (Bio-Evaluation Center, Korea Research Institute of Bioscience & Biotechnology) ;
  • Kim, Chang-Gi (Bio-Evaluation Center, Korea Research Institute of Bioscience & Biotechnology)
  • 남경희 (한국생명공학연구원 바이오평가센터) ;
  • 김창기 (한국생명공학연구원 바이오평가센터)
  • Received : 2014.09.21
  • Accepted : 2014.11.05
  • Published : 2015.03.31
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Abstract

Drought is one of the major abiotic constraints limiting quantity and quality of rice grain. In order to elucidate the effects of drought on chemical compositions of rice grain, seedlings were cultivated in a rainout shelter controlled with well-watered or water-deficit conditions. After harvesting, the key components including proximates, amino acids, fatty acids, minerals, and vitamins of rice grains were analyzed. Drought stress increased the amounts of methionine, phenylalanine, linoleic acid, linolenic acid, calcium, potassium, vitamin B1, and vitamin E in rice grains, whereas it decreased the contents of lignoceric acid. Particularly, drought stress caused a marked increase in vitamin E content. These results indicate drought significantly influence the chemical compositions of rice grains.

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