Effects of sucrose, carrot juice and culture media on growth and net CO2 exchange rate in Phalaenopsis hybrid ‘Pink’

2016 ◽  
Vol 205 ◽  
pp. 17-24 ◽  
Author(s):  
Meutia Zahara ◽  
Avishek Datta ◽  
Patchareeya Boonkorkaew
Keyword(s):  
Exchange Rate ◽  
Culture Media ◽  
Co2 Exchange ◽  
Carrot Juice ◽  
Co2 Exchange Rate ◽  
Net Co2 Exchange Rate

Responses of Subterranean Clover Communities to Temperature. III. Effects of Temperature on Canopy Photosynthesis

1977 ◽  
Vol 4 (2) ◽  
pp. 273 ◽  
Author(s):  
S Fukai ◽  
JH Silsbury
Keyword(s):  
Exchange Rate ◽  
Exchange Rates ◽  
Subterranean Clover ◽  
Co2 Exchange ◽  
High Irradiance ◽  
Area Index ◽  
Hyperbolic Curve ◽  
Co2 Exchange Rate ◽  
Effects Of Temperature ◽  
Net Co2 Exchange Rate

Subterranean clover communities were grown at 12, 16, 20 and 24°C in naturally lit temperature- controlled glasshouses. Rates of net CO2 exchange of communities varying in leaf area index (LAI) from 1 to 8 were determined at several levels of irradiance at the temperature at which the plants were grown and at other measurement temperatures. When measured at each of the four growth temperatures and at an irradiance of 250 W m-2, the net CO2 exchange rate increased with increase in LAI up to 3. Higher values of LAI affected the rate only slightly. At each growth temperature and an irradiance of only 50 W m-3, net CO2 exchange decreased with increase in LA1 over the range 2-8. Net CO2 exchange rate followed a hyperbolic curve with increase in irradiance at all LAI values, the asymptote being largely independent of temperature and of LAI within the range 3-8. The net CO2 exchange rates of a community, determined at different measurement temperatures, were also directly related to measurement temperature at high irradiance but, owing to increased respiration rate at high temperature, inversely related to temperature at low irradiance. Differences in net CO2 exchange rates of a community at high irradiance due to different measurement temperatures were greater than the differences due to different growth temperatures.

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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