KOREAN JOURNAL OF CROP SCIENCE (한국작물학회지)

The Korean Society of Crop Science (한국작물학회)
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Dormancy-related Change in Endogenous ABA, Batatasin, and Sugar in Stored Tuber and Bulbil of Chinese Yam

  • Lee, In-Jung (College of Agricultural Life Sciences, Division of Plant Bioscience, Kyungpook National University) ;
  • Kim, Sang-Kuk (Institute of Bioresources, Kyongbuk Provincial Agricultural Techonolgy Administration) ;
  • Lee, Sang-Chul (College of Agricultural Life Sciences, Division of Plant Bioscience, Kyungpook National University) ;
  • Park, Tae-Shik (Institute of Bioresources, Kyongbuk Provincial Agricultural Technology Administration) ;
  • Kwon, Soon-Tae (College of Natural Science, Application of Life Science, Andong National University)
  • Published : 2002.09.01
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Abstract

Endogenous ABA and batatasins were first quantified in the stored tubers and bulbils of the Chinese yam, Dioscorea opposita Thunb. cv. 'Tsukune' by GC-MS with comparison of internal standard, and sugar content was also analyzed by HPLC with comparison of external standard. Endogenous ABA content in stored tubers and bulbils was rapidly decreased as storage period prolonged. ABA content of the bulbils was always higher than that of tuber during storage periods. All batatasins of stored tubers and bulbils at 30 days after storage decreased steadily compared to 120 days after storage. On the contrary, batatasin-Ⅲ of the stored tuber and bulbils was only decreased at 60 days after storage. In Dioscorea opposita Thunb. cv. 'Tsukune' like D. japonica, D. alata, and D. bulbifera, may be controlled by endogenous batatasins and ABA, In these compounds, batatasins rather than ABA might be closely related to dormancy-inducing compound during dormancy of the Chinese yam, Dioscorea opposita Thunb. cv. Tsukune.

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References

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