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http://dx.doi.org/10.7744/cnujas.2015.42.1.001

Effects of water stress on chemical composition of rice grains  

Nam, Kyong-Hee (Bio-Evaluation Center, Korea Research Institute of Bioscience & Biotechnology)
Kim, Chang-Gi (Bio-Evaluation Center, Korea Research Institute of Bioscience & Biotechnology)
Publication Information
Korean Journal of Agricultural Science / v.42, no.1, 2015 , pp. 1-5 More about this Journal
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.
Keywords
Composition; Drought; Rainout shelter; Rice;
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