The effect of considering cultivar differences in stomatal conductance (gs) on relative air humidity (RH)-related energy demand was addressed. We conducted six experiments order to study the variation evapotranspiration (ETc) pot rose cultivars, investigate underlying processes and parameterise a gs-based ETc model. Several levels crop were realised by adjusting growth environment. commonly app...

Water deficit in the atmosphere and soil are two key interactive factors that constrain transpiration vegetation productivity. It is not clear which of these more important for water carbon flux response to drought stress ecosystems. In this study, field data numerical modeling were used isolate their impact on evapotranspiration (ET) gross primary productivity (GPP) at a tropical forest site B...

As a trace gas involved in hydration during plant photosynthesis, carbonyl sulfide (COS) and its leaf relative uptake rate (LRU) is used to reduce the uncertainties simulations of gross primary productivity (GPP). In this study, 101 independent observations were collected from 22 studies. We extracted LRU, stomatal conductance (gs), canopy COS carbon dioxide (CO2) fluxes, relevant environmental...

Aim of study: Two-year-old containerized balsam and concolor fir one-year-old Eastern white pine transplants were grown under variable watering regimes with the goal identifying plant morphological some physiological traits water stress. Area This experiment was conducted in a greenhouse at Tree Research Center on Michigan State University campus, East Lansing, Michigan. Material methods: Relat...

Physiological responses to water stress in hybrid poplar (INRA 7171-B4, Populus tremula L. x P. alba L.) lines transformed to overexpress a pine cytosolic glutamine synthetase (GS1) gene were compared with those of non-transgenic plants. Before, during and after a drought treatment, net photosynthetic rates (Anet) were higher in transgenic than in non-transgenic plants. Stomatal conductance (gs...

Reseeding with native plants to rebuild alpine meadow has become a popular way of ecological restoration. However, the harsh environment poses great challenge establishment due poor management water and nutrients. How water–fertilizer interaction influences dominant grass species is still unclear, reasonable fertilizer conditions are not determined. Our results showed that addition nitrogen cou...

The impact of water stress and nitrogen (N) nutrition on leaf respiration (R), carbon balance use efficiency (WUE) remains largely elusive. Therefore, the objective present study was to investigate effect soil N stresses growth, physiological responses, structure, gain WUE maize. plants were subjected different regimes maturity. results showed that photosynthesis (An) stomatal conductance (Gs) ...

The responsiveness to ethylene of net photosynthesis and stomatal conductance to water vapor in intact plants was investigated in 13 herbaceous species representing seven plant families. Exposures were conducted in an open, whole-plant exposure system providing controlled levels of irradiance, air temperature, CO(2), relative humidity, and ethylene concentration. Net photosynthesis and stomatal...

Understanding the responses of cork oak (Quercus suber L.) to actual and predicted summer conditions is essential to determine the future sustainability of cork oak woodlands in Iberia. Thermal imaging may provide a rapid method for monitoring the extent of stress. The ecophysiology of cork trees was studied over three years. Three treatments were applied by means of rainfall capture and irriga...

Na SO induced regulation of some key morpho-physiological characteristics in Sorghum were 2 4 examined to investigate the effect of Na SO on germination and morphology of Sorghum that was conducted 2 4 at Botany Department University of Gujrat. The variety used in this experiment was SSG-77. Plants were subjected for 30 days to sand culture that were salinized with four salt levels [T (control)...