Water relations and Energy balance

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Water relationsand Energy balance
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?Water potential
? ? p ? p ? m ? g

• ? p osmotic potential
• ? p pressure potential
• ? g gravitational potential
• ? m matric potential

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Water potential
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Whole-plant adaptations to low water availability

• Drought avoidance
• Drought deciduous
• Drought tolerant

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Anatomical and morphological adaptations

• Leaf size and shape
• Stomata properties
• Characteristics of the cuticle
• Pubescence
• Vascular tissue
• Roots

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Energy balance
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Energy Balance
Rn the net amount of radiant heat energy H the
sensible heat (conduction convection) loss ?E
latent heat loss
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