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Research Article

Dormancy type and Germination Characteristics of Seeds of Lonicera chrytsantha Turcz. Ex Ledeb (Caprifoliaceae)

각시괴불나무 종자의 휴면유형과 발아특성

Hyung Bin Park15
,
Chung Ho Ko2
,
Sang Yong Kim3
,
Ki Cheol Lee4
,
Jae Hyeun Kim3
,
Jae Min Chung4*
박 형빈15
,
고 충호2
,
김 상용3
,
이 기철4
,
김 재현3
,
정 재민4*
1Master’s Degree Researcher, Division of Plant Resources, Korea National Arboretum, Yangpyeong 12519, Korea
2Post-doc, Division of Plant Resources, Korea National Arboretum, Yangpyeong 12519, Korea
3Senior Researcher, Division of Plant Resources, Korea National Arboretum, Yangpyeong 12519, Korea
4Researcher, Division of Plant Resources, Korea National Arboretum, Yangpyeong 12519, Korea
5Associate Researcher, Division of Restoration Research, Research Center for Endangered Species, National Institute of Ecology, Yeongyang 36531, Korea
1국립수목원 식물자원연구과, 석사후연구원
2국립수목원 식물자원연구과, 박사후연구원
3국립수목원 식물자원연구과, 임업연구관
4국립수목원 식물자원연구과, 임업연구사
5국립멸종위기종복원센터 식물복원팀, 전임연구원
* Corresponding Author
31 October 2019. pp. 457-462
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Abstract

This study was conducted to investigate seed dormancy type and germination characteristics of Lonicera chrysantha. In imbibition test, the seeds imbibed water readily. Therefore, the seeds did not have physical dormancy (PY). The seeds have undeveloped embryo at seed dispersal and, then the E:S ratio (embryo/seed ratio) increased more than about 46% just before germination. In temperature experiments (5, 15, 20 and 25℃), the seeds did not germinate during incubation at 5℃. At 20℃, the seeds started to germinate from a week after sowing and the final germination was 86.7% at 2 weeks after sowing. At 15℃, the seeds started to germinate at 2 weeks and the final germination rate was 75.0% at 4 weeks after sowing. At 25℃, the seeds started to germinate at a week and the final germination rate was 48.3% at 19 weeks after sowing. Consequently, Optimum temperature of germination is 20℃ that shown highest final germination rate and shortest mean germination time. The seeds germinated all temperature treatments within 4 weeks except to 5℃. Therefore, it is concluded that seeds of L. chrysantha have only morphological dormancy (MD).

Keywords
Embryo/seed ratio
Morphological dormancy
Optimum temperature
Seed dormancy type
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Information
  • Publisher :The Plant Resources Society of Korea
  • Publisher(Ko) :한국자원식물학회
  • Journal Title :Korean Journal of Plant Resources
  • Journal Title(Ko) :한국자원식물학회지
  • Volume : 32
  • No :5
  • Pages :457-462
  • Received Date : 2019-05-17
  • Revised Date : 2019-07-15
  • Accepted Date : 2019-07-22
  • DOI :https://doi.org/10.7732/kjpr.2019.32.5.457
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