Korean Journal of Medicinal Crop Science (한국약용작물학회지)

The Korean Society of Medicinal Crop Science (한국약용작물학회)
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Effect of Gibberellin and Light on Germination of Seeds in Codonopsis lanceolata Benth

  • Ghimire, Bimal Kumar (Bioherb Research Institute, Kangwon National University) ;
  • Shin, Chul-Min (Bioherb Research Institute, Kangwon National University) ;
  • Li, Cheng-Hao (Key Laboratory of Forest Genetics and Tree Breeding, Northeast Forestry University) ;
  • Chung, Ill-Min (Department of Applied Life Science, Konkuk University) ;
  • Lee, Dong-Wook (Bioherb Research Institute, Kangwon National University) ;
  • Kim, Hee-Young (Bioherb Research Institute, Kangwon National University) ;
  • Kim, Na-Young (Department of Food & Nutrition, Kyunghee University) ;
  • Lim, Jung-Dae (Bioherb Research Institute, Kangwon National University) ;
  • Kim, Jae-Kwang (Bioherb Research Institute, Kangwon National University) ;
  • Kim, Myong-Jo (Bioherb Research Institute, Kangwon National University) ;
  • Cho, Dong-Ha (Bioherb Research Institute, Kangwon National University) ;
  • Lee, Sun-Joo (Department of Applied Life Science, Konkuk University) ;
  • Yu, Chang-Yeon (Bioherb Research Institute, Kangwon National University)
  • Published : 2006.10.01
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Abstract

Seed of Codonopsis lanceolata exhibits low germination due to impermeable seed coat. Prolonged seed dormancy can be overcome by the application of gibberellins, as it promotes growth of the embryo and weakens the structures surrounding of embryo. The effects of photoperiod, sugar and gibberellin concentration were investigated at constant temperature for 12 days and 22 days in vitro and invivo conditions respectively. The rate of germination of seeds of Codonopsis lanceolata in wet filter paper in both complete dark and light treatments was significantly lower than that of seed treated with $GA_3$. It clearly indicates that there is significant coat imposed dormancy in the seed of Codonopsis lanceolata. The rate of germination in vivo condition was lower than that of the in vitro condition supplemented with $GA_3$ Thus, the physical dormancy due to impermeable seed coat and low level of endogenous gibberellins in the seed was the cause of poor germination rate in Codonopsis lanceolata.

Keywords

References

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