LED광질에 따른 분홍장구채(Silene capitata Kom.)의 생리 및 개화 반응 Effects of the Light Source of LEDs on the Physiological and Flowering Response of Endangered Plant Silene capitata Kom.원문보기
본 연구에서는 한국 멸종위기식물인 분홍장구채의 보전 및 인공재배를 위해 식물공장 내 인공적인 광 조건에서 일어나는 생리와 개화반응 특성을 알아보았다. 이를 위해 분홍장구채를 식물공장의 각 챔버에 적색광, 청색광, 백색광, 적색+원적색 혼합광, 적색+청색 혼합광 그리고 적색+청색+백색 혼합광 하에서 재배하여 광합성률, 증산률, 기공전도도, 수분이용효율, 엽록소함량, 최소엽록소형광, 최대엽록소형광, 광계II의 광화학적 효율 그리고 잎과 꽃 수를 측정하였다. 그 결과 적색 단일광과 적색+원적색 혼합광에서 분홍장구채는 가장 많이 개화하였으며, 이 광조건에서는 광합성률, 증산률 그리고 기공전도도는 상대적으로 다른 조건보다 높았으나 수분이용효율은 차이가 없었으며, 엽록소함량은 적었다. 특히 최소 및 최대 엽록소형광과 광계II의 광화학적 효율은 적색 단일광 조건에서 다른 광 조건보다 낮았다. 이러한 결과는 분홍장구채의 꽃의 생산을 위해서는 적색 단일광이나 적색+원적색의 인공광 조건에서 재배하는 것이 효율적이라는 것을 의미한다.
본 연구에서는 한국 멸종위기식물인 분홍장구채의 보전 및 인공재배를 위해 식물공장 내 인공적인 광 조건에서 일어나는 생리와 개화반응 특성을 알아보았다. 이를 위해 분홍장구채를 식물공장의 각 챔버에 적색광, 청색광, 백색광, 적색+원적색 혼합광, 적색+청색 혼합광 그리고 적색+청색+백색 혼합광 하에서 재배하여 광합성률, 증산률, 기공전도도, 수분이용효율, 엽록소함량, 최소엽록소형광, 최대엽록소형광, 광계II의 광화학적 효율 그리고 잎과 꽃 수를 측정하였다. 그 결과 적색 단일광과 적색+원적색 혼합광에서 분홍장구채는 가장 많이 개화하였으며, 이 광조건에서는 광합성률, 증산률 그리고 기공전도도는 상대적으로 다른 조건보다 높았으나 수분이용효율은 차이가 없었으며, 엽록소함량은 적었다. 특히 최소 및 최대 엽록소형광과 광계II의 광화학적 효율은 적색 단일광 조건에서 다른 광 조건보다 낮았다. 이러한 결과는 분홍장구채의 꽃의 생산을 위해서는 적색 단일광이나 적색+원적색의 인공광 조건에서 재배하는 것이 효율적이라는 것을 의미한다.
We examed physiological and flowering response of S. capitata, the endangered plant in Korea, under LED light conditions in plant factory to cultivate artificially for conservation. We cultivated S. capitata and measured its physiological responses and the number of flowers under red, blue, white, r...
We examed physiological and flowering response of S. capitata, the endangered plant in Korea, under LED light conditions in plant factory to cultivate artificially for conservation. We cultivated S. capitata and measured its physiological responses and the number of flowers under red, blue, white, red+far-red mixed, red+blue mixed, and red+blue+white mixed light. The results showed that its photosynthetic rate and chlorophyll content were recorded relatively high in red+blue+white and red+blue mixed light respectively. Transpiration rate and stomatal conductance appeared relatively high in the white single light while water use efficiency was no difference. Photochemical efficiency of photochemical photosystem II by minimum and maximum chlorophyll fluorescence was the highest in the red+blue+white mixed light condition than other ones. The number of flowers of S. capitata was at its peak under the red light or red+far-red mixed light. Therefore, we conclude that the most efficient way to grow for flowering of S. capitata is to provide red light or red+far-red mixed light in the plant factory.
We examed physiological and flowering response of S. capitata, the endangered plant in Korea, under LED light conditions in plant factory to cultivate artificially for conservation. We cultivated S. capitata and measured its physiological responses and the number of flowers under red, blue, white, red+far-red mixed, red+blue mixed, and red+blue+white mixed light. The results showed that its photosynthetic rate and chlorophyll content were recorded relatively high in red+blue+white and red+blue mixed light respectively. Transpiration rate and stomatal conductance appeared relatively high in the white single light while water use efficiency was no difference. Photochemical efficiency of photochemical photosystem II by minimum and maximum chlorophyll fluorescence was the highest in the red+blue+white mixed light condition than other ones. The number of flowers of S. capitata was at its peak under the red light or red+far-red mixed light. Therefore, we conclude that the most efficient way to grow for flowering of S. capitata is to provide red light or red+far-red mixed light in the plant factory.
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제안 방법
Fo, Fm and Fv/Fm were measured using a Chlorophyll Fluorometer (OS30p, Continuous source Chlorophyll Fluorometer, ADC Co.) between 02:00PM to 04:00PM. When measuring, leaves were done dark adaptation for 20 min then irradiated the light of 660nm in a moment.
Physiological response measured in October, 2013 when growth activity is vigorous. To investigate the physiological response of S. capitata, photosynthetic rate (umolCO2g-2s-1 ), transpiration rate (mmolg-2s-1 ), stomatal conductance (mmolH2Om-2 s-1), water use efficiency (umolCO2mmolH2O-1 ), chlorophyll content (CCI), minimum and maximum chlorophyll fluorescence (Fo, Fm) and the photochemical efficiency of photosystem II (Fv/Fm) were measured.
데이터처리
Each group was analyzed by One-way ANOVA (Fisher’s least significant difference, p>0.05).
The effects of different LED irradiation patterns on the physiological and flowering responses of S. capitata were tested using one-way ANOVA. The statistical differences between the treatment groups were evaluated via Fisher’s least significant difference test as post-hocs, with significance at P=0.
The statistical differences between the treatment groups were evaluated via Fisher’s least significant difference test as post-hocs, with significance at P=0.05.
성능/효과
Thus this study was done to confirm S. capitata can be stable cultivated and multiplied in the plant factory even if climate change continued and to find optimal light source for their optimal physiological response and flowering.
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