백산차(Ledum palustre var. diversipilosum) 종자의 형태적 특성 및 발아조건 분석

Analysis on Morphological Characters and Germination Conditions of Seeds in Ledum palustre var. diversipilosum

  • 최영민 (국립수목원 DMZ산림생물자원보전과) ;
  • 조승주 (국립수목원 DMZ산림생물자원보전과) ;
  • 이현지 (국립수목원 DMZ산림생물자원보전과) ;
  • 김명자 (국립수목원 DMZ산림생물자원보전과) ;
  • 성정원 (국립한국농수산대학교 조경학과) ;
  • 윤정원 (국립수목원 DMZ산림생물자원보전과)
  • Young-Min Choi (DMZ Botanic Garden, Korea National Arboretum) ;
  • Seung-Ju Jo (DMZ Botanic Garden, Korea National Arboretum) ;
  • Hyun-Ji Lee (DMZ Botanic Garden, Korea National Arboretum) ;
  • Myung-Ja Kim (DMZ Botanic Garden, Korea National Arboretum) ;
  • Jung-Won Sung (Korea National University of Agriculture and Fisheries Landscape Architecture) ;
  • Jung-Won Yoon (DMZ Botanic Garden, Korea National Arboretum)
  • 발행 : 2023.04.27

초록

The Hairy labrador tea (Ledum palustre L. var. diversipilosum Nakai) is a evergreen small shrub, belonging to the Ericaceae and mainly distributed along the alpine areas of Hamgyeong-do in North Korea. Through seed physiological research on North Korean plants, we intend to obtain basic data for the development of mass propagation methods and use them for vegetation restoration. The internal and external morphological characters of the seed were observed using scanning electron microscopy or stereoscopy, and full seeds were selected through X-ray test. Seeds were cultured on a growth condition at 15/6℃ and 25/15℃ to examine the germination response according to temperature, and the number of germinated individuals was examined every 24 hours to calculate germination percentage and mean germination time. Low-temperature treatment (4℃) and hormone treatment (GA3) were performed to investigate the effect of dormancy breaking, and analysis of variance (ANOVA) was performed on the experimental results using SAS 9.4. The seeds of the Hairy labrador tea were elliptical-narrow in shape, and the epidermal cell wall pattern was reticulated. The final germination rate (FGP) was the highest at 58.9% under the condition of low temperature treatment at 25/15℃. The average number of days to germination (MGT) was the highest at 25.1 days without treatment at 15/6℃, and the average of the last germination days was confirmed to be about 13 days. As a result of low temperature treatment, it was confirmed that the final germination rate (FGP) increased by 43.3%. The significance of the final germination rate (FGP) was verified according to the pretreatment at 25/15℃.

키워드

과제정보

This study was carried out with the support of the research program for "A study on collections and conservation of North Korea plant resources" (Project No.: KNA 1-2-42, 22-2) of Korea National Arboretum.