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Developmental Pathway of Main Bud in Panax ginseng C.A. Meyer

고려인삼의 주아 발달경로

  • Chung, Chan-Moon (Department of Industrial Plant Science & Technology, Chungbuk National University) ;
  • Lim, Heung-Bin (Department of Industrial Plant Science & Technology, Chungbuk National University) ;
  • Lee, Yi (Department of Industrial Plant Science & Technology, Chungbuk National University) ;
  • Chung, Youl-Young (KT&G Central Research Institute) ;
  • Jun, Byeong-Rok (Department of Industrial Plant Science & Technology, Chungbuk National University)
  • 정찬문 (충북대학교 특용식물학과) ;
  • 임흥빈 (충북대학교 특용식물학과) ;
  • 이이 (충북대학교 특용식물학과) ;
  • 정열영 (KT&G 중앙연구원) ;
  • 전병록 (충북대학교 특용식물학과)
  • Published : 2009.09.30

Abstract

The researchers studied the composition of latent buds by surveying the embryo of harvested seed, and the developmental pathway of latent buds by analyzing the characteristics of local ginseng. One-year-old ginseng seedlings were transplanted into the field and harvested two years later. The developmental pathway of the main bud, which would be the shoot of ginseng in the fourth year, was also investigated. The main bud of the seedling was formed from the region between root and shoot of the germinating seed. Primary and axillary latent buds protruded in a dome-shape from the cortex and separated from the main bud. Ninety percent of the single main bud was derived from the primary latent bud. Twin main buds were derived from a primary latent bud and one axillary bud, and triple main buds were derived from primary latent bud and two axillary latent buds. In the field, the researchers could not find 2-stem plants in 2-3 years old plants. However, the researchers found a 2-stem plant in a 4-year-old plant because its two main buds developed from a 3-year-old plant. We can conclude that a 2-stem plant was observed in the plant that was at least 4 years old. The main buds of the 4-year-old plant were formed at the primary and axillary latent bud of seed and cortex, the latent bud of rhizome in a 2-3 year old plant. In older plants, twin and triple main buds were derived mostly from the cortex latent bud than the primary latent bud.

본 시험은 인삼의 채종종자의 조직을 관찰하여 잠아의 실체를 조사하였고 묘삼의 잠아특성을 산지별로 조사하여 다경이 되는 잠아의 발달경로를 알아보았다. 그리고 묘삼을 본포에 이식하여 3 년생을 채굴하여 4 년생이 될 주아의 생성경로를 조사하였다. 묘삼의 주아는 발아종자의 경근천이부에서 피층조직이 융기하여 돔 (dome)형태의 원잠아 또는 측잠아가 형성된 후 이들 조직이 분화하여 발달하였다. 그리고 묘삼의 단뇌는 90%가 원잠아에서 유래하였으며 쌍뇌는 원잠아와 2 개의 측잠아 중 1 개가 발달되어 형성되었으며 3 뇌는 원잠아와 측잠아 2 개가 발달하여 형성되었다. 본포에서 2 년생과 3 년생은 주아가 단뇌로 형성되어 있어 2 경 개체가 발생하지 않으나 4 년생은 3 년생에서 발달한 쌍뇌 이상의 주아가 있어 2 경 개체이상이 관찰되는 최초의 연생이었다. 4년생의 주아는 종자에서 형성된 원잠아, 측잠아와 2-3년생에서 뇌두부위에서 형성된 피층잠아에서 유래하는 것으로 고년생으로 갈수록 쌍뇌 또는 3뇌는 원잠아에 비해 피층잠아 유래의 주아가 많았다.

Keywords

References

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