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Dominant Factors in Reduction of Photosynthetic Rate Affected by Air Humidity and Leaf Water Potential in Rice Plants
Dry matter production Leaf production rate Photosynthetic rate Plant type Root yield Starch content Thai cassava
2009/8/6
In order to clarify the dominant factor responsible for the reduction in photosynthetic rate caused by 1) an increase in leaf-air vapor pressure difference and 2) a decrease in leaf water potential i...
Developmental Change in Panicle Water Potential in Rice
Leaf water potential Panicle water potential Rice
2009/8/4
Rice panicles start to transpire just after heading. We can therefore expect that the water potential of panicles changes little prior to heading and varies in response to transpiration after heading...
Effect of Water Potential of Culture Medium on Geotropic Response of Primary Seminal Root in Japanese Wheat Cultivars
Geotropic response Primary seminal root Triticum aestivum Water potential
2009/8/4
It has been observed that wheat has a shallow root system in wet soil and a deep root system in dry soil. However, the control mechanisms of root growth depending on soil water status remain unclear. ...
Changes of Water Potential in Rice Panicle under Increasing Drought Stress at Various Stages
Drought Panicle development Rice Water potential Water stress
2009/7/31
Experiments were conducted to examine whether the responses in panicle water potential under drought changes with panicle development. Twenty seedlings of two rice cultivars, Norin 20 and Milyang 23, ...
Response of Leaf Water Potential of Rice (Oryza sativa L.) to Evaporative Demand under Paddy Field Conditions:II. Relationship between response and yield
Evaporative demand Grain yield Leaf water potential Location Radiation Spikelet number
2009/7/31
We observed previously (Part 1) that maintenance ability of leaf water potential (Ψ1) in rice plants under paddy field conditions changed depending on planting years and seasons and individual locatio...
Response of Leaf Water Potential of Rice (Oryza sativa L.) to Evaporative Demand under Paddy Field Conditions : I. Changes with plant development
Evaporimeter Evaporative demand Growth stage Leaf water potential
2009/7/31
Because the leaf water potential (Ψ1) of the rice plant (Oryza sativa L.) is strongly affected by the evaporative demand of the atmosphere under paddy field conditions, and most changes in Ψ1 reflect ...
Mechanisms of Different Responses of Leaf Photosynthesis in African Rice (Oryza glaberrima Steud.) and Rice (Oryza sativa L.) to Low Leaf Water Potential
Abscisic acid Drought tolerance Oryza glaberrima Steud Oryza sativa L Photosynthesis
2009/7/31
This research was conducted to elucidate the mechanisms in water stress tolerance of Oryza glaberrima Steud. with special reference to stomatal conductance. Leaf photosynthesis (LPS) of O. glaberrima...
Effects of Panicle Water Potential on Water Stress Susceptibility in Rice
Development Panicle Rice Water potential Water stress susceptibility Winnowed paddy number
2009/7/30
The effects of drought on the rice yield differ depending on the time when plants are subjected to the drought. It is therefore probable that water stress susceptibility, the degree of yield reduction...
Influence of Leaf Xylem Water Potential and Leaf Position on Relationship between Nitrogen Content and Photosynthetic Rate of Rice Plant
Days after fully expanded Leaf position Leaf xylem water potential Nitrogen content
2009/7/29
Even though the nitrogen content (mgNdm-2) of rice leaves is the same, a large difference in the net photosynthetic rate (Pn) has been recognized. To determine the reasons for the difference, leaf xyl...
Analysis of Photosynthesis Depression under Low Leaf Water Potential by Comparison of CO2 Exchange and O2 Evolution Rates
Air phase oxygen electrode Infrared CO2 analyzer Photosynthesis Photosynthetic capacity
2009/7/28
Reductions in CO2 supply through stomata and photosynthetic capacity in mesophyll are the two major processes for depression of photosynthesis under water stress conditions. The objective was to clari...
Wheat Cultivar Differences in Photosynthetic Response to Low Soil Water Potentials:I. Maintenance of photosynthesis and leaf water potential
Drought avoidance Drought resistance Drought tolerance Photosynthesis Triticum aestivum
2009/7/27
Although many studies have shown cultivar differences in photosynthetic response to water deficit, the understanding of detailed mechanisms is not sufficient. We examined the mechanisms of water stres...
Wheat Cultivar Differences in Photosynthetic Response to Low Soil Water Potentials:I. Maintenance of photosynthesis and leaf water potential
Drought avoidance Drought resistance Drought tolerance Photosynthesis Triticum aestivum Water stress
2009/7/27
Although many studies have shown cultivar differences in photosynthetic response to water deficit, the understanding of detailed mechanisms is not sufficient. We examined the mechanisms of water stres...
Effects of Water Table on Physiological Traits and Yield of Soybean:II. Effects of water table and rainfall on leaf water potential and photosynthesis
Leaf water potential Photosynthesis Soybean Stomatal conductance Water table
2009/7/22
The effects of constant and fluctuating water tables at 15∼100 cm below the soil surface on the leaf water potential, stomatal conductance and photosynthesis of lysimeter-grown soybean (Glycine...