Network of photonic sensors for CO2 exchange rate measurement in forests

2017 ◽  
Author(s):  
Marcin S. Bieda ◽  
Piotr Sobotka ◽  
Piotr Lesiak ◽  
Tomasz R. Wolinski
Keyword(s):  
Exchange Rate ◽  
Co2 Exchange ◽  
Rate Measurement ◽  
Co2 Exchange Rate ◽  
Photonic Sensors

Online Monitoring and Analysis of Plant Photosynthetic Physiology and Environmental Factors

2012 ◽  
Vol 241-244 ◽  
pp. 75-80
Author(s):  
Zhao Hui Jiang ◽  
Chun Sheng Wang ◽  
Jing Zhang ◽  
Yi Yue ◽  
Shao Wen Li
Keyword(s):  
Exchange Rate ◽  
Environmental Factors ◽  
Diurnal Variation ◽  
Real Time ◽  
Photosynthetically Active Radiation ◽  
Environmental Parameters ◽  
Co2 Exchange ◽  
Active Radiation ◽  
Photosynthetic Physiology ◽  
Co2 Exchange Rate

It is very important for researching the growth and cultivation of plants that real-time monitoring of photosynthetic physiology & environmental parameters and analysis of relationship between these parameters. In this paper, an indoor cultivated Michelia alba monitoring system was built, which could continuously monitor leaf's CO2 exchange rate, transpiration rate, air temperature and humidity, soil moisture, photosynthetically active radiation and other parameters in real time, and could also analyze the relationship between the photosynthetic physiological parameters and environmental parameters. The results show that the diurnal variation of indoor cultivated Michelia alba leaf's CO2 exchange rate presents a bimodal pattern, which shows a midday depression. The diurnal variation of photosynthetically active radiation presents a single pattern. The diurnal variation of air humidity presents a “ S ” pattern, but the overall variation is little. The environmental factors that influenced the Michelia alba photosynthetic physiological characteristics most greatly are the photosynthetically active radiation and temperature.

The Role of Leaf Area Development and Photosynthetic Capacity in Determining Growth of Kenaf under Moderate Salt Stress

1986 ◽  
Vol 13 (4) ◽  
pp. 553 ◽  
Author(s):  
PS Curtis ◽  
A Lauchli
Keyword(s):  
Salt Stress ◽  
Exchange Rate ◽  
Leaf Area ◽  
Photosynthetic Capacity ◽  
Co2 Exchange ◽  
Plant Water Relations ◽  
Plant Water ◽  
Co2 Exchange Rate ◽  
Area Development ◽  
Leaf Area Development

Growth, net CO2 exchange rate and plant water relations were analysed in kenaf (Hibiscus cannabinus) cv. Cuba-108, a stem fibre crop, grown at 1, 37 and 75 mM NaCl. Dry weight was reduced only at 75 mM NaCl although leaf area was affected at both 37 and 75 mM NaCl. Growth analysis following nine serial harvests over 40 days showed a significant decline in leaf area ratio with salt stress but no decrease in net assimilation rate. CO2 exchange rate, measured on recently expanded leaves by infrared gas analysis, increased in plants grown at 37 mM NaCl and was unchanged at 75 mM NaCl. Pressure-volume analysis of plant water relations showed an osmotic adjustment of 0.15 MPa in plants grown at 75 mM but no adjustment at 37 mM NaCl. Turgor potential declined in plants grown at either salt level and fell to near zero during midday. We conclude that growth in kenaf under moderate salt stress is affected primarily through a reduction in expansive growth and leaf area development rather than a decline in photosynthetic capacity.

scholarly journals Effect of aminoacetonitrile on the CO2 exchange rate in rice leaves.

1985 ◽  
Vol 49 (10) ◽  
pp. 2847-2850 ◽  
Author(s):  
Choi CHO ◽  
Jin-Myeon KIM ◽  
Ryuichi ISHII ◽  
Suong-Be HYEON ◽  
Akinori SUZUKI
Keyword(s):  
Exchange Rate ◽  
Co2 Exchange ◽  
Rice Leaves ◽  
Co2 Exchange Rate
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