Shading Effect on Growth and Flowering of Orostachys japonicus A. Berger

차광처리가 바위솔의 생장과 개화에 미치는 영향

  • Hong, Dong-Oh (College of Agriculture & Life Sci., Gyeongsang Natl. Univ.) ;
  • Lee, Chang-Woo (College of Agriculture & Life Sci., Gyeongsang Natl. Univ.) ;
  • Kim, Hong-Young (College of Agriculture & Life Sci., Gyeongsang Natl. Univ.) ;
  • Kang, Jin-Ho (College of Agriculture & Life Sci.,Resarch Institute of Life Sci., Gyeongsang Natl. Univ.) ;
  • Ryu, Yeong-Seop (Agricultural R & D Promotion Center) ;
  • Shin, Sung-Chul (College of Natural Sci., Gyeongsang Natl. Univ.)
  • Published : 2006.08.30

Abstract

Orostachys japonicus, a monocarpic plant, is artificially grown in greenhouses. The study was carried out to examine the effect of shading (0, 35, 55, 75, 95%) on growth, morphological characters, and flowering. The treatments were done on August 25 and afterward samples were taken every 2 weeks until October 20, in which growth, morphological and flowering related characters were measured. With severer shading plant height, inflorescence length, number of leaves including bracts and stem diameter were decreased although severely declined in 95% shading treatment. Leaves and bracts, stem, root, shoot and total dry weights increasingly declined with severer shading. Florets formed on the inflorescence showed similar response to the shading treatment as plant height did. Flowering of the florets was not observed throughout all the sampling period, meaning that different light intensities by shading did not affect their flowering.

개화 이후 고사하는 일임성 식물인 바위솔은 가을철에 집중되는 자연산의 출하시기와 중복되지 않도록 비가림 하우스에서 인공재배되고 있다. 본 연구는 하우스 시설로 인한 차광 (무차광, 35, 55, 75, 95% 차광)이 바위솔의 생장 및 개화에 미치는 영향을 파악하고자 실시되었던 바 그 결과를 요약하면 다음과 같다. 1. 초장, 화서장, 엽과 포엽수 및 경직경은 광도가 가장 약한 95% 차광시 가장 짧고, 적거나, 가늘었던 반면, 여타 차광 처리간에는 차이가 적다 할지라도 차광이 심할수록 줄어드는 경향을 보였다. 2. 엽과 포엽중, 경중, 근중, 지상부중, 전체건물중은 무차광에서 가장 많았으며 차광이 심할수록 감소되는 경향을 보였다. 3. 형성된 소화수는 건물중과 같이 무차광에서 가장 많고 차광이 심할수록 감소되었으나, 95% 차광시 아주 적었다. 4. 차광처리로 소화가 개화된 개체는 관찰되지 않아 광도가 제한되는 시설하우스에서 여타 처리를 통하여 바위솔의 인공재배는 가능할 것으로 판단된다.

Keywords

References

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