지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
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초록· 키워드
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Background: This study was conducted to investigate the changes in the photosynthetic parameters, chlorophyll content, chlorophyll fluorescence, and growth characteristics of Aruncus dioicus var. kamtschaticus seedlings under different shading treatments.
Methods and Results: The shading treatment was regulated with the shading level (non-shaded, 35%, 55%, and 75% shading). Photosynthetic activities, such as net photosynthetic rate, stomatal conductance, stomatal transpiration rate, and performance index on absorption basis (PIABS)were the highest under 35% shading (4.36 μ㏖ CO₂·m<SUP>−2</SUP>·s<SUP>−1</SUP>, 54.2 m㏖ H₂O·m<SUP>-2</SUP>·s<SUP>−1</SUP>, 0.66 m㏖ H₂O·m<SUP>−2</SUP>·s<SUP>−1</SUP>, and 1.3, respectively), and the lowest under 75% shading. This implies that the decrease in net photosynthetic rate may be due to an inability to regulate water and CO2 exchanged through the stomata. Thechlorophylla, b, and a + b contents were increased with elevating shading level and the chlorophyll a/b ratio showed non-significant differences. It was found that the dry weight (leaf, shoot, and whole) was the highest (1.14 g, 0.49 g, and 2.31 g, respectively) under 35% shading and the t/R ratio was the highest under 75% shading.
Conclusions: It is concluded that 75% shading exhibited a strong reduction of photosynthetic activity, and 35% shading showed the best conditions for the early growth and cultivation of A. dioicus var. kamtschaticus.
Methods and Results: The shading treatment was regulated with the shading level (non-shaded, 35%, 55%, and 75% shading). Photosynthetic activities, such as net photosynthetic rate, stomatal conductance, stomatal transpiration rate, and performance index on absorption basis (PIABS)were the highest under 35% shading (4.36 μ㏖ CO₂·m<SUP>−2</SUP>·s<SUP>−1</SUP>, 54.2 m㏖ H₂O·m<SUP>-2</SUP>·s<SUP>−1</SUP>, 0.66 m㏖ H₂O·m<SUP>−2</SUP>·s<SUP>−1</SUP>, and 1.3, respectively), and the lowest under 75% shading. This implies that the decrease in net photosynthetic rate may be due to an inability to regulate water and CO2 exchanged through the stomata. Thechlorophylla, b, and a + b contents were increased with elevating shading level and the chlorophyll a/b ratio showed non-significant differences. It was found that the dry weight (leaf, shoot, and whole) was the highest (1.14 g, 0.49 g, and 2.31 g, respectively) under 35% shading and the t/R ratio was the highest under 75% shading.
Conclusions: It is concluded that 75% shading exhibited a strong reduction of photosynthetic activity, and 35% shading showed the best conditions for the early growth and cultivation of A. dioicus var. kamtschaticus.
목차
ABSTRACT
서언
재료 및 방법
결과 및 고찰
REFERENCES
참고문헌 (35)
참고문헌 신청
Andrew JJ / 1998 / The coupled response of stomatal conductance to photosynthesis and transpiration / Journal of Experiment Botany 49:399~406
Ellsworth DS / 1992 / Leaf mass per area, nitrogen content and photosynthetic carbon gain in Acer saccharum seedlings in contrasting forest light environments / Functional Ecology 6:423~435
Falqueto AR / 2010 / Chlorophyll fluorescence in rice: Probing of senescence driven changes of PSII activity on rice varieties differing in grain yield capacity / Brazilian Journal of Plant Physiology 22:35~41
Franck N / 2009 / Limitation of coffee leaf photosynthesis by stomatal conductance and light availability under different shade levels / Trees 23:761~769
Hiscox JD / 1979 / A method for the extraction of chlorophyll from leaf tissue without maceration / Canadian Journal of Botany 57:1332~1334
Ellsworth DS / 1992 / Leaf mass per area, nitrogen content and photosynthetic carbon gain in Acer saccharum seedlings in contrasting forest light environments / Functional Ecology 6:423~435
Falqueto AR / 2010 / Chlorophyll fluorescence in rice: Probing of senescence driven changes of PSII activity on rice varieties differing in grain yield capacity / Brazilian Journal of Plant Physiology 22:35~41
Franck N / 2009 / Limitation of coffee leaf photosynthesis by stomatal conductance and light availability under different shade levels / Trees 23:761~769
Hiscox JD / 1979 / A method for the extraction of chlorophyll from leaf tissue without maceration / Canadian Journal of Botany 57:1332~1334
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UCI(KEPA) : I410-ECN-0101-2019-480-000585841