Produção Nacional
Plant Water Relations: Absorption, Transport and Control Mechanisms
2012; Linguagem: Inglês
10.5772/33478
AutoresGeraldo Chavarria, Henrique Pessoa dos Santos,
Tópico(s)Plant responses to water stress
Resumoprocess of the loss of water vapour through their leaves, i.e. the transpiration, which is caused by the pressure gradient of vapour between tissue saturated with water from the leaves and air, the "dry" atmosphere.The variations in this pressure gradient of the vapour will define the evaporative demand of the environment where the plant is.In the other extreme -where it represents the liquid reservoir of the lampion -we have water content present in the soil.In this scene, it is noted that the water flow through the plant is dependent on the energy formed by the gradient of the water content that is established between the soil and the atmosphere.However, we will see throughout this chapter that plants, unlike our lampion, can and must modulate this gradient in order to survive the wide variations of water availability between types of soils, weather and seasons.www.intechopen.com
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