Korean Journal of Medicinal Crop Science (한국약용작물학회지)

The Korean Society of Medicinal Crop Science (한국약용작물학회)
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Effects of Growth and Flowering on Orostachys japonicus A. Berger by Nitrogen Fertilization

질소 시비량이 바위솔의 생장과 개화에 미치는 영향

  • Lee, Chang-Woo (College of Agriculture & Life Sci., Gyeongsang Natl. Univ.) ;
  • Jeon, Seung-Ho (College of Agriculture & Life Sci., Gyeongsang Natl. Univ.) ;
  • Kim, Hong-Young (College of Agriculture & Life Sci., Gyeongsang Natl. Univ.) ;
  • Shin, Sung-Cheol (College of Natural Sci., Gyeongsang Natl. Univ.) ;
  • Kang, Jin-Ho (College of Agriculture & Life Sci., Gyeongsang Natl. Univ.)
  • Published : 2007.12.30
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Abstract

Shoot weight of Orostachys japonicus should determine its profitability. The study was carried out to measure the effect of nitrogen (N) fertilization level (0, 5, 10, 20kg/10a) on its growth, morphological characters, and flowering. Night-break treatment of 2 hours at midnight were done since Aug. 25 when afterward samples were taken every 4 weeks to Nov. 16. Growth, morphological and flowering related characters were measured from each sample. Plant height, inflorescence length, number of leaves including bracts and stem diameter were decreased with increased N levels. Leaf and bract, floret, shoot and total dry weights as well as withering rate showed similar response to the above morphological characters. Florets were less formed with increased N levels but were not flowered due to the night-break treatment, meaning that N fertilization had little effect on its growth and anthesis of the florets.

바위솔은 홍수출하와 관련된 일임성 식물이라 할지라도 전초로 이용되기 때문에 전초수량으로 수익성이 결정된다. 본 연구는 전초수량을 증대시키는데 필요한 정보를 제공하고자 질소 시비량 (0, 5, 10, 20kg N/10a)이 바위솔의 생장과 소화의 개화에 미치는 영향을 추적하고자 8월 25일부터 매일 2시간의 암기중단 처리를 가하면서 8월 25일부터 11월 14일까지 4주간 간격으로 생육조사를 실시하였던 바 그 결과를 요약하면 다음과 같다. 1. 질소 시비량이 증가할수록 고사되는 개체의 비율이 증가하는 반면, 초장, 화서장, 엽과 포엽수 및 경직경은 감소하는 경향을 보였다. 2. 엽과 포엽중, 소화중, 경중, 근중, 지상부중 및 전체건물중도 형태적 형질과 마찬가지로 질소 시비량이 증가할수록 감소하였다. 3. 화서에 형성되는 소화도 질소 시비량이 증가할수록 감소하였으나, 암기중단 처리로 인하여 형성된 소화는 개화되지 않았다. 4. 11월 중순까지도 고사와 관련된 개화개체 비율은 질소 시비량에 관계없는 것으로 나타나 소화의 개화는 일장과 온도 등 다른 요인들에 의하여 조절되는 것으로 나타났다.

Keywords

References

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