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2026 Vol.35, Issue 2 Preview Page

Original Articles

Germination Dynamics of Coriander (Coriandrum sativum L.) in Response to Temperature and Light/Dark Regimes

온도 및 명암 조건에 따른 고수 종자의 발아 동태

Il-Beom Yang1†
,
Moon-Sun Yeom2†
,
Jihye Lee3
,
Myung-Min Oh45*
양 일범1†
,
염 문선2†
,
이 지혜3
,
오 명민45*
1Researcher, Korea Smart Farm R&D Foundation, Sejong 30121, Korea
2Postdoctoral Researcher, Protected Horticulture Research Institute, National Institute of Horticultural and Herbal Science, Rural Development Administration, Haman 52054, Korea
3Intern Researcher, Smart Farm Research Center, Korea Institute of Science and Technology (KIST), Gangneung 25451, Korea
4Professor, Division of Animal, Horticultural, and Food Sciences, Chungbuk National University, Cheongju 28644, Korea
5Professor, Brain Korea 21 Center for Smart GreenBio Convergence and Sustainable Regional Development, Chungbuk National University, Cheongju 28644, Korea
1(재)스마트팜연구개발사업단, 연구원
2국립원예특작과학원 시설원예연구소, 전문연구원
3한국과학기술연구원 스마트팜 연구센터 석사후연구원
4충북대학교 축산·원예·식품공학부 원예학 전공 교수
5충북대학교 BK21 지속가능 지역발전 스마트그린바이오 융복합교육연구단 교수
*Corresponding Author
†These authors contributed equally to this work.
30 April 2026. pp. 90-100
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Abstract

Coriander (Coriandrum sativum L.) often shows uneven germination due to its hard seed coat and temperature sensitivity. Precise environmental control during germination is essential to accelerate early growth, ensure uniform seedling establishment, and shorten the production cycle. This study investigated the effects of temperature and light on coriander seed germination and to identify suitable conditions for consistent and uniform seedling establishment. Seeds were sown in petri dishes and germinated in a plant growth chamber under five different temperatures (10, 15, 20, 25, and 30°C) and two light conditions (light and dark) for 10 days. Daily germination rate (GR) was recorded, and the data were used to calculate mean germination time (MGT), time to 50% germination (T50), and the promptness index (PI). The results indicate that darkness promoted germination at all tested temperatures. The highest GR was observed at 15 and 20°C, reaching 90 and 91% in darkness and 86 and 87% under light, respectively. At 25°C, the GR was 75% in darkness and 43% under light, whereas at 30°C was the lowest with 7 and 1%, respectively. MGT and T50 were shortest at 20°C, and PI was also highest at this temperature. In addition, PI tended to be higher in darkness across all temperature treatments. However, seedlings germinated in darkness showed chlorosis after 10 days, indicating reduced photosynthetic activity. In conclusion, coriander seeds exhibited the highest germination rate and fastest germination in darkness at 20°C. However, light should be supplied immediately after radicle emergence to support photosynthesis, or the dark germination period should be kept shorter than 10 days. These results indicate that proper temperature and light control can enhance germination rate and promote uniform seedling and production of coriander in vertical farming system.

Keywords
germination rate
mean germination time
promptness index
T50
uniform seedling

고수(Coriandrum sativum L.)는 단단한 종피와 온도 민감성으로 인해 종종 불균일한 발아를 보인다. 초기 성장을 가속화하고, 균일한 묘 소질 확보를 보장하며, 생산 주기를 단축하기 위해서는 발아 기간 동안 정밀한 환경 제어가 필수적이다. 본 연구는 고수 종자 발아에 미치는 온도와 빛의 영향을 조사하고 일관되고 균일한 묘 소질 확보를 위한 적합한 조건을 확인하고자 수행되었다. 종자를 페트리 접시에 파종하여 식물 생장상 내에서 5가지 서로 다른 온도(10, 15, 20, 25, 30°C)와 2가지 광 조건(명조건 및 암조건) 하에 10일 동안 발아시켰다. 일일 발아율(GR)을 기록하였으며, 이 데이터를 사용하여 평균 발아 시간(MGT), 50% 발아 시간(T50), 발아 촉진 지수(PI)를 산출하였다. 결과에 따르면 암조건이 테스트된 모든 온도에서 발아를 촉진하는 것으로 나타났다. 가장 높은 GR은 15°C와 20°C에서 관찰되었으며, 암조건에서 각각 90%와 91%, 명조건 하에서 각각 86%와 87%에 도달하였다. 25°C에서의 GR은 암조건에서 75%, 명조건 하에서 43%였던 반면, 30°C에서는 각각 7%와 1%로 가장 낮았다. MGT과 T50은 20°C에서 가장 짧았으며, PI 또한 이 온도에서 가장 높았다. 또한 PI는 모든 온도 처리구에서 암조건일 때 더 높은 경향을 보였다. 그러나 암조건에서 발아한 유묘는 10일 후 황화 현상을 보였는데, 이는 광합성 활성의 감소를 나타낸다. 결론적으로 고수 종자는 20°C 암조건에서 가장 높은 GR과 가장 빠른 발아를 나타내었다. 하지만 광합성 활성 유도를 위해서는 유근 출현 직후 즉시 광을 공급하거나, 암조건 발아 기간을 10일 이내로 단축하는 것이 필요하다. 이러한 결과는 적절한 온도와 광 제어가 수직 농장 시스템에서 고수의 GR을 높이고 균일한 묘 및 생산을 촉진할 수 있음을 나타낸다.

키워드
고수 묘
명발아
암발아
발아세
발아율
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Information
  • Publisher :The Korean Society for Bio-Environment Control
  • Publisher(Ko) :(사)한국생물환경조절학회
  • Journal Title :Journal of Bio-Environment Control
  • Journal Title(Ko) :생물환경조절학회지
  • Volume : 35
  • No :2
  • Pages :90-100
  • Received Date : 2026-03-24
  • Revised Date : 2026-04-01
  • Accepted Date : 2026-04-11
  • DOI :https://doi.org/10.12791/KSBEC.2026.35.2.090
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