KOREAN JOURNAL OF CROP SCIENCE (한국작물학회지)

The Korean Society of Crop Science (한국작물학회)
권호 표지

Early Growth, Carbohydrate and Phytic Acid Contents of Germinating Rice Seeds under NaCl Stress

  • Park So-Hyeon (Department of Plant Resources and Science, Hankyong National University) ;
  • Sung Jwa-Kyung (National Institute of Agricultural and Science Technology, RDA) ;
  • Lee Su-Yeon (Department of Plant Resources and Science, Hankyong National University) ;
  • Park Jae-Hong (Department of Agronomy, Chungbuk National University) ;
  • Lee Ju-Young (National Institute of Agricultural and Science Technology, RDA) ;
  • Jang Byoung-Choon (National Institute of Agricultural and Science Technology, RDA) ;
  • Lee Ki-Sang (National Institute of Agricultural and Science Technology, RDA) ;
  • Song Beom-Heon (Department of Agronomy, Chungbuk National University) ;
  • Kim Tae-Wan (Department of Plant Resources and Science, Hankyong National University)
  • Published : 2006.06.01
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Abstract

Germination characteristics and alterations in soluble sugar-starch transition and phytic acid during germination were studied in rice seeds under saline conditions. NaCl significantly reduced the speed of germination. Also, the radicle growth out of seeds was severely inhibited by the exposure to NaCl solution, thus, seeds were almost impossible to grow to seedlings. Soluble sugar was remarkably accumulated, whereas starch was decomposed stepwise during seed germination. The metabolism of soluble sugar and starch in germinating seeds showed a distinct difference. The level of phytic acid in seeds decreased in all NaCl treatments during germination, but the level was affected differently by NaCl concentration in the two varieties. Overall, our results suggest that salt stress retard the radicle growth of rice seeds, and affect the starch-to-sugar conversion and the decomposition of phytic acid differently in two varieties.

Keywords

References

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