Accurate quantification of evapotranspiration (ET) is crucial for surface water resources and best agricultural management practices in watersheds. The aim this study was to better understand ET changes caused by the rapid expansion C4 (corn) cover stomatal conductance, which may be amplified future due environmental human-contributing factors, such as climate change practices. Linking enlargem...

Leaf water pressure head (Ψleaf) and more specifically its critical thresholds (Ψthreshold) characterize stomatal control of transpiration, particularly for C4 plants, but this physiological process has rarely been integrated into dynamic crop models at the field scale. We further extended two coupled with Feddes root uptake (RWU) Couvreur RWU by adding photosynthesis model in order to be appli...

BACKGROUND AND AIMS An investigation was carried out to determine whether stomatal closure in flooded tomato plants (Solanum lycopersicum) results from decreased leaf water potentials (psi(L)), decreased photosynthetic capacity and attendant increases in internal CO(2) (C(i)) or from losses of root function such as cytokinin and gibberellin export. METHODS Pot-grown plants were flooded when 1...

Potato and wheat plants were grown for 50 d at 400, 1000 and 10000 micromoles mol-1 carbon dioxide (CO2). and sweetpotato and soybean were grown at 1000 micromoles mol-1 CO2 in controlled environment chambers to study stomatal conductance and plant water use. Lighting was provided with fluorescent lamps as a 12 h photoperiod with 300 micromoles m-2 s-1 PAR. Mid-day stomatal conductances for pot...

Trait-based breeding is essential to improve wheat yield, particularly when stress adaptation is targeted. A set of modern and underutilized wheat genotypes was examined in a 2-year field experiment with distinct seasonal water supply. Yield formation and drought response strategies were analyzed in relation to components of Passioura's yield-water framework based on phenological, morphological...

Stomata are essential for regulating the exchange of water and energy between plants atmosphere. In context climate warming, especially in extremely arid regions, knowledge stomatal conductance variation patterns is fundamental to study crop evapotranspiration, productivity drought resistance characteristics. The accurate simulation this region an important prerequisite optimal regulation growt...

Abstract. Choirunnisa LF, Solichatun, Yunus A. 2022. Effect of vermicompost and biostarter on the growth photosynthetic rate Echinacea purpurea. Asian J Agric 6: 35-39. purpurea (L.) Moench or purple coneflower is a medicinal plant that originated from North America began to cultivate in Indonesia. A proper method needed for improving its development adjust tropical area like This study aimed d...

When stomata are open, the trade-off between water loss through transpiration and CO2 uptake via photosynthesis is a result of the evolutionary history of land plants from green algae. To supply the up to 1000-fold higher flux of water leaving the leaf compared with CO2 molecules entering the leaf during leaf gas exchange (Nobel 2009), plant hydraulics has evolved to be highly efficient. The in...

Controlled alternate partial root-zone irrigation (CAPRI), also called partial root-zone drying (PRD) in other literature, is a new irrigation technique and may improve the water use efficiency of crop production without significant yield reduction. It involves part of the root system being exposed to drying soil while the remaining part is irrigated normally. The wetted and dried sides of the ...

Since the first published measurements of stomatal density by Johann Hedwig (1793) and Alexander von Humboldt (1798), the counting and measuring of stomata has been one of themost typical botanical activities, with an important role across fields of plant biology (Willmer and Fricker, 1996). Stomatal density (d) and size (s) are indicators of acclimation and adaptation to contrasting environmen...