Korean Journal of Agricultural and Forest Meteorology (한국농림기상학회지)

Korean Society of Agricultural and Forest Meteorology (한국농림기상학회)
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Geographical Variation in Bud-burst Timing of Zelkova serrata Provenances

느티나무 산지별 개엽시기의 지리적 변이

  • Kim, In Sik (Department of Forest Genetic Resources, Korea Forest Research Institute) ;
  • Han, Sang Urk (Department of Forest Genetic Resources, Korea Forest Research Institute) ;
  • Lee, Wi Young (Department of Forest Genetic Resources, Korea Forest Research Institute) ;
  • Na, Sung Joon (Department of Forest Genetic Resources, Korea Forest Research Institute)
  • 김인식 (국립산림과학원 산림유전자원부) ;
  • 한상억 (국립산림과학원 산림유전자원부) ;
  • 이위영 (국립산림과학원 산림유전자원부) ;
  • 나성준 (국립산림과학원 산림유전자원부)
  • Received : 2013.07.23
  • Accepted : 2013.09.27
  • Published : 2013.09.30
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Abstract

This study was conducted to examine the geographic variation of bud phenology of Zelkova serrata provenances. Data were collected from Gangneung, Yilmsil, Hwaseong and Jinju plantations which were parts of the 6 provenance trials established by Korea Forest Research Institute in 2009. The 16 provenances were included in these trials. The starting date of bud burst and finishing date of leaf expansion were investigated from April to May every other day. The four geographic factors and fifteen climatic factors of the test sites and provenances were considered in this study. Canonical correlation analysis was conducted to examine the major factors affecting the bud phenology between test sites and provenances. The study results suggested that the major factors affecting the timing of bud burst were the differences of extremely high temperature (March-October), annual mean temperature, mean temperature (March-October), extremely high temperature (July-August) and mean humidity (June-October) between test site and provenance. The provenances with lower mean or high temperature than those of plantation showed the earlier bud burst and leaf expansion. It showed a typical north-south or low-high temperature cline. Finally, we discussed the implication of the tree breeding program of Z. serrata based on these results.

본 연구는 느티나무 산지의 개엽 시기에 영향을 미치는 기후인자를 구명하기 위해 수행되었다. 이를 위해 2009년 국립산림과학원에서 조성한 강릉, 임실, 화성, 진주의 4개 산지시험림을 대상으로 개엽 시기를 조사하였다. 개엽시기 조사는 4~5월에 걸쳐 이루어졌으며 휴면 중이던 동아가 부풀어 오르면서 초록색이 처음 보이는 때를 개엽 개시일로 하였으며, 동아에서 잎이 나와 완전히 신장하여 펴진 시점을 개엽 완료일로 하였다. 분산분석을 실시한 결과, 개엽 개시일과 개엽 완료일 모두 조림지 간, 산지 간 그리고 조림지와 산지 간 상호작용에서 통계적으로 유의한 차이가 인정되었다. 개엽 시기에 영향을 미치는 조림지의 기후인자를 구명하기 위해 상관분석을 실시한 결과, 3~10월의 평균기온 또는 최고기온이 높고, 3~10월 또는 6~10월의 평균습도가 낮은 조림지에서 개엽이 빨리 이루어지는 것으로 나타났다. 조림지와 산지 간 기후인자의 차이가 개엽 시기에 미치는 영향을 구명하고자 기후인자에 대한 생태적 거리(=조림지-산지)를 구하여 공준상관 분석을 실시한 결과, 3~10월 최고기온, 연평균 최고기온, 3~10월 평균기온, 7~8월 최고기온, 6~10월 평균습도의 차이가 주요 인자로 나타났다. 결론적으로 느티나무는 조림지 보다 생육기의 평균 기온이 낮은 곳에서 온 산지가 개엽이 빨리 시작되는 경향으로 전형적인 북-남 또는 저온-고온 경사변이를 나타내느티나무 산지에 따른 지리적 변이가 존재함을 확인할 수 있었다. 마지막으로 이러한 연구결과를 느티나무 육종에 활용하기 위한 방안에 대해 고찰하였다.

Keywords

References

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