Korean Journal of Plant Resources (한국자원식물학회지)

The Plant Resources Society of Korea (한국자원식물학회)
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Effect of Seed Moisture Content on Seed Storage of Dehisced Ginseng Seeds

종자 수분함량에 따른 개갑 인삼 종자의 저장성 연구

  • Suh, Su Jeoung (Department of Herbal Crop Research, NIHHS, RDA) ;
  • Yu, Jin (Department of Herbal Crop Research, NIHHS, RDA) ;
  • Jang, In-Bae (Department of Herbal Crop Research, NIHHS, RDA) ;
  • Kim, Young-Chang (Department of Herbal Crop Research, NIHHS, RDA)
  • 서수정 (농촌진흥청 국립원예특작과학원 인삼특작부) ;
  • 유진 (농촌진흥청 국립원예특작과학원 인삼특작부) ;
  • 장인배 (농촌진흥청 국립원예특작과학원 인삼특작부) ;
  • 김영창 (농촌진흥청 국립원예특작과학원 인삼특작부)
  • Received : 2022.01.13
  • Accepted : 2022.03.09
  • Published : 2022.04.01
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Abstract

Ginseng (Panax ginseng C.A. Meyer) is a perennial plant and propagates by seeds, and those need after-ripening for germination. To be ready for climate change and to ensure a stable seed supply, the technique for storing seeds in short-term and long-term in large quantities is required. In this study, dehisced ginseng seeds from two locations, batch #1 and batch #2, were stored at -3.5℃ with different moisture content, and after 3, 15, and 27 months of storage, the percentage of radicle emergence and shoot emergence were measured. After 3 months, radicle emergence and shoot emergence were normal only when the seed moisture content was more than 35%, and overall, germination was higher in batch #2 than in batch #1. After 15 months, the partially dehydrated seeds, with a moisture content between 45 to 54%, showed the highest germination rates, and most of the undried seeds were spoiled and failed to germinate. Seeds with moisture content lower than 25% had poor germination, too. The partially dehydrated seeds also succeeded in germination and growth in the soil after 15 months of storage, but deteriorated after one more 1 year, too. In summary, ginseng seeds look like have temperate recalcitrant seed characteristics, and partial dehydration allows extension of seed longevity.

인삼은 다년생 식물로 종자 번식을 하는데, 수확 시 미성숙한 배(embryo)를 가지고 있어 후숙이 필요하다. 기후변화에 대비하고 안정적인 종자 보급을 위해서는 단기 및 장기간 대량으로 종자를 저장할 수 있는 기술이 필요하다. 본 연구에서는 2개 지역에서 얻은 개갑된 인삼 종자를 수분함량을 달리하여 -3.5℃에 보관하고, 저장 3, 15, 27개월 후에 유근과 지상부 출현을 관찰하여 발아력 검정을 통해 종자 저장성을 조사하였다. 3개월 후, 전반적으로 batch #1보다 batch #2에서 발아율이 높았고, 그리고 수분함량이 35% 이상에서만 발아가 원활하였다. 15개월 후, batch #2에서 수분함량이 45~54%인 부분 건조된 종자들에서 가장 높은 발아율을 보였고, 대부분의 무건조 종자는 부패하며 발아에 실패하였다. 수분함량 25% 이하로 건조된 종자들 역시 유근발아 또는 출아가 불량하였다. 부분 건조 종자들은 토양에서의 발아 및 생육도 우수하였지만, 1년 뒤에는 역시 활력을 유지하지 못하였다. 요약하면, 인삼 종자는 온대성 난저장 종자의 특성을 가지는 것으로 보이며, 부분 건조 조건에서는 종자의 수명을 연장할 수 있어 1년 정도의 단기 저장에 활용할 수 있을 것으로 판단된다.

Keywords

Acknowledgement

본 논문은 농촌진흥청 연구사업(과제번호: PJ01482001)과 2022년도 농촌진흥청 국립원예특작과학원 전문연구원 과정 지원 사업에 의해 이루어진 결과로 이에 감사드립니다.

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