희귀식물 너도바람꽃(Eranthis stellata Maxim.) 종자의 형태특성 및 휴면유형 분석

Seed Morphological Characteristics and Dormancy type of Eranthis stellata Maxim., Korea Rare Plant.

  • 채인환 (국립백두대간수목원 시드볼트운영센터) ;
  • 류건희 (국립백두대간수목원 시드볼트운영센터) ;
  • 송세규 (국립백두대간수목원 산림생물자원보전실) ;
  • 김진우 (경상북도수목원) ;
  • 강기호 (국립백두대간수목원 백두대간보전부) ;
  • 이하얀 (국립백두대간수목원 시드볼트운영센터)
  • Inhwan Chae (Seed Vault Center, Baekdudaegan National Arboretum) ;
  • Geon Hui Ryu (Seed Vault Center, Baekdudaegan National Arboretum) ;
  • Se-kyu Song (Forest Bioresources Conservation Division, Baekdudaegan National Arboretum) ;
  • Jin-Woo Kim (Conservation Research Team, Gyeongsangbuk-do Arboretum) ;
  • Gi Ho Kang (Baekdudaegan Bioresources Conservation Department, Baekdudaegan National Arboretum) ;
  • Hayan Lee (Seed Vault Center, Baekdudaegan National Arboretum)
  • 발행 : 2020.08.14

초록

Eranthis stellata Maxim. is a perennial plant that grows around the valley. E. stellata is concerned about the decline in natural habitats due to climate change in KOREA, continues to be observed and protected as an endangered species (Least Concrned, LC). Nevertheless, studies on the characteristics of the seeds of E. stellata are insufficient. So, this study analyzed the morphological characteristics and dormancy types of seeds. Seeds of E. stellata was collected in April at Gyeongsangbuk-do Arboretum and kept at 5 ℃ until using. To investigate the morphology of seeds, an optical microscope and a scanning electron microscope (SEM) were used. GA3 treated or untreated seeds (4 replicates of 25 seeds each) were observed germination and embryo growth for 1 month at 5 ℃ and 25/15 ℃ (12h day/12h night). The seed surface of E. stellata, light brown, was observed as a common characteristic of Eranthis genus, reticulate. The short axis of seeds was 1.11~1.77mm (average 1.44mm), and the long axis was 1.27~1.91mm (average 1.63mm), which was investigated in a slightly round shape (subglose). While no germination was observed at all conditions, Embryo growth was observed at 5 ℃ both in the control group and with GA3treated groups. Thus, seeds of E. stellata are classified as morphological physiological dormancy (MDP), which requires embryonic development and dormant break at the same time. These results can be useful information for determining morphological physiological seed dormancy and germination, and will be an important basic data for seed propagation of E. stellata as a resource.

키워드

과제정보

본 연구는 「경상북도수목원(보존구역) 중점관리대상종 현지 내·외 보전방안 연구용역」의 지원에 의해 이루어진 결과로 이에 감사드립니다.