Effects of Different Light Conditions on Wintering in Evergreen Ground Covers

차광처리가 상록지피식물의 내한성에 미치는 영향

  • Kim, Myung-Hyoe (Dept. of Environmental Landscape Architecture, Sangmyung Univ.)
  • 김명회 (상명대학교 환경조경학과)
  • Received : 2010.11.09
  • Accepted : 2010.12.17
  • Published : 2010.12.31

Abstract

Six evergreen ground-cover species including Ajuga reptans, Carex morrowii 'Variegata', Dianthus 'Night Star', Hedera helix 'Ivalace', Pachysandra terminalis, and Sedum rupestre, were tested for cold acclimation with three different light treatments (0, 30, and 70% of shading, respectively) to select potential candidates for over-wintering in central Korea. Among those species, Ajuga reptans, Carex morrowii 'Variegata', and Sedum rupestre performed well, which had more than 50% of survival rate in all light conditions. However, Dianthus 'Night Star' had less than 40% under any light treatment and the other two species, Hedera helix 'Ivalace' and Pachysandra terminalis, survived more than 40% only with 70% of shading condition. These results imply that those candidate species having less cold hardness in central Korea could have the potential to could over-winter as long as a proper light condition is provided.

중부지방에서 동절기에 월동가능한 상록지피식물의 이용가능성을 알아보고자 Ajuga reptans와 Carex morrowii 'Variegata', Dianthus 'Night Star', Hedera helix 'Ivalace', Pachysandra terminalis, Sedum rupestre 등 총 6종의 실험재료를 대상으로 0, 30, 70%의 차광처리에 따른 내한성 증진실험을 실시한 결과, 모든 처리구에서 40% 이하의 생존율을 나타낸 Dianthus 'Night Star'를 제외하고는 차광처리에 관계없이 Ajuga reptans와 Carex morrowii 'Variegata', Sedum rupestre은 50% 이상의 생존율과 상록의 잎을 유지했다. 그러나 Hedera helix 'Ivalace'와 Pachysandra terminalis는 0% 조건에서 전부 고사하였으나 70% 광조건에서는 40% 이상의 생존율을 나타냈다. 따라서 일부 내한성이 떨어지는 상록지피종들도 광조건의 조절에 따라서 상록의 잎을 유지하면서 월동 가능할 것으로 사료된다.

Keywords

References

  1. AOAC. 1995. Chlorophyll in plants. Chap. 3. pp. 26- 28. AOAC Vol. 16. USA.
  2. Asada, T. and M. Ogasawara. 1998. The effect of shading on the growth of young 'Fuji' apple trees. J. Japan. Soc. Hort. Sci. 67: 655-659. https://doi.org/10.2503/jjshs.67.655
  3. Jeong, H. H. and K. S. Kim. 1999. Effects of shading on the growth of Hedera rhombea and Pachysandra terminalis. Kor. J. Hort. Sci. & Tech. 17: 29-32.
  4. Kim, G. S. and J. S. Lee. 2009. Growth reaction of some ground cover plant in Korean native greening according to shading levels. Flower Res. J. 17: 75-80.
  5. Kim, I. H, K. Y. Huh, and M. R. Huh. 2010. Cold tolerance assessment of Sedum species for shallow-extensive green roof system. Kor. J. Hort. Sci. Technol. 28: 22- 30.
  6. Korea meteorological administration. 2010. Annual climatological report.
  7. Lee, J. K. and B. K. Han. 1995. A study on the ground cover plants application in landscape architecture construction. Jour. Korean Insti. of garden 13: 39-48.
  8. Lee, J. S., K. J. Bang, and B. H. Kwack. 1991. Studies on the present status of evergreen ground-cover plants in winter of Seoul. J. Korean Insti. Lands. Archit. 19: 1-15.
  9. Nam, Y. K., H. R. Kwack, and B. H. Kwack. 1997. Different extents of leaf- variegation in Epipremnum aureum as influenced by different light levels. J. Kor. Soc. Hort. Sci. 38: 537-540.
  10. Noh, H. S., B. C. Jeong, K. K. Lee, and J. S. Lee. 2004. Studies of the proper shading levels for the native ground cover plants. J. Kor. Flower Res. Soc 12: 329-335.
  11. Park, M. A. 1982. Studies on development of the ground cover plant. Jour. Jinju A. & F. Jr. Coll. 20: 305-310.
  12. Sul, J. H. and K. J. Bang. 2002. The research of injury during hardening and dehardening on three Rohododendron. Jour. Korean Instit. Inter.4: 79-85