재활용 CGE의 다양한 혼합비율에 따른 분화 칼란코에 ‘Gold Strike’ 삽수의 발근과 생육

Rooting and Growth of Kalanchoe 'Gold Strike' Cuttings in Various Mixtures of CGF

  • 이미영 (경상대학교 대학원 응용생명과학부 원예학과) ;
  • 정병룡 (경상대학교 농업생명과학연구원)
  • 발행 : 2002.09.01

초록

CGF(cellular glass foam)는 폐기된 유리물질을 재가공하여 입자화한 것으로 통기성과 배수성이 뛰어난 펄라이트와 이화학적 성질이 유사하여 칼란코에 영양번식용 배지로의 가능성이 있다. 따라서 CGF와 펄라이트를 각각 입상암면과 피트모스를 다양한 부피비로 혼합하여 Kalanchoe blossfeldiana ‘Gold Strike’의 생육을 비교하였다. 배지의 입자크기는 CGF 2.0~4.0mm, 펄라이트 1.2~4.0mm를 사용하였다. 평균온도 18.2$^{\circ}C$와 상대습도 66.7% 조건의 미스트상에서 전조처리(명기 14h.d$^{-1}$, 암기 10h.d$^{-1}$)하여 재배하였다. 초장, 근장, 경경. 엽수, 엽면적, 발근율, 지상부와 지하부의 생체중과 건물중, 총 엽록소 농도, 그리고 배지의 이화학성을 조사하였다. 모든 처리구에서 100%의 발근율을 보였다. CGF와 펄라이트가 혼합된 배지의 이화학적 특성은 처리간 유의차가 적었다. 또한 CGF의 혼합배지에서 칼란코에의 생육은 펄라이트의 혼합 배지와 비교해 유사하거나 오히려 우수한 생육을 보였다 따라서 칼란코에의 영양번식용 배지로서 CGF의 사용 가능성이 입증되었으나 추후 CGf를 이용하기 위해 보다 폭넓은 실증실험과 분석이 필요하며, 높은 pH를 보정할 수 있는 적정 양액 개발되어야 할 것이다.

Cellular glass foam (CGE), the reprocessed glass, has a possibility as a component of vegetative propagation media of floricultural crops due to the its excellent air and water permeability, similar to that of perlite. An experiment was conducted to evaluate the rooting and growth thereafter of Kalanchoe blossfeldiana ‘Gold Strike’in media containing various volume ratios of granular rockwool, peat-moss, CGF and perlite. The particle size of CGF and perlite was 2.0~4.0mm and 1.2~4.0mm, respectively. Cuttings were rooted in a fog tunnel with a mean temperature of 18.2$^{\circ}C$ and RH of 66.7% under a long day regime (14 h per day light period). Height, length of the longest root, stem diameter, no. of leaves, leaf area, percentage of rooted cuttings, shoot and root fresh weights, shoot and root dry weights, total chlorophyll concentration and physicochemical properties were measured. Cuttings rooted 100% in all treatments. Physicochemical properties in CGF and perlite-containing media showed little differences. The growth of rooted plants in the CGF-containing media was similar or rather superior to that in perlite-containing media. Consequently, CGF has a possibility as a vegetative propagation medium of Kalanchoe. To make wider commercial use of CGF, more demonstrative experiments and analyses are necessary.

키워드

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