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2025 Vol.43, Issue 4 Preview Page

Research Article

Stratification for Breaking Morphophysiological Dormancy in Corydalis platycarpa (Maxim. ex Palib.) Makino Seeds: Requirements Embryo Growth and Germination
Jihun Lee12
,
Kyungtae Park1
,
Hamin Lee1
,
Soyeon Park1
,
Bo-Kook Jang3
,
Young-Hyun You4
,
Ju-Sung Cho1*
1Division of Animal, Horticultural and Food Sciences, Chungbuk National University, Cheongjju 28644, Korea
2Department of Demilitarized Zone (DMZ) Forest Biological Resources Conservation, Korea National Arboretum, Yanggu 24564, Korea
3Department of Horticulture, Sunchon National University, Suncheon 57922, Korea
4Species Diversity Research Division, National Institute of Biological Resources, Incheon 22689, Korea
*Corresponding Author
31 August 2025. pp. 421-434
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Abstract

Corydalis platycarpa (Maxim. ex Palib.) Makino contains various alkaloids with notable clinical therapeutic value, including inhibiting gastric juice secretion and acting as an analgesic. It serves as an antibacterial agent. However, information on the germination and dormancy of C. platycarpa for ecosystem restoration and species utilization is lacking. Therefore, this study aimed to classify dormancy types and improve dormancy-breaking methods through the effects of phenology, move-along, plant growth regulators, and stratification at various temperatures on C. platycarpa seeds. Fresh seeds of C. platycarpa showed underdeveloped embryos and did not germinate within 4 weeks at any temperature, confirming morphophysiological dormancy (MPD). Germination of 53.0% was observed after 12 weeks at 4°C but the remaining ungerminated seeds required warm temperatures before low temperatures for embryo growth and germination, evidenced in phenology and move-along experiments. However, GA3 did not replace cold or warm stratification and did not affect germination. Therefore, C. platycarpa seeds were classified as having two MPD levels, with 45.0% and 55.0% being non-deep and deep complex MPD levels, respectively. While dormancy in C. platycarpa seeds took a long time to break in the natural environment, it was efficiently broken by 4 weeks of stratification at 15/6°C before experiencing low temperatures. This research on classifying dormancy and improving dormancy-breaking methods can be used for large-scale propagation for ecosystem restoration and species utilization.

키워드
ecology
phenology
propagation
restoration
temperature
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Information
  • Publisher :KOREAN SOCIETY FOR HORTICULTURAL SCIENCE
  • Publisher(Ko) :한국원예학회
  • Journal Title :Horticultural Science and Technology
  • Journal Title(Ko) :원예과학기술지
  • Volume : 43
  • No :4
  • Pages :421-434
  • Received Date : 2024-12-12
  • Revised Date : 2025-02-10
  • Accepted Date : 2025-02-12
  • DOI :https://doi.org/10.7235/HORT.20250038
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