What are Plant-water Relations?
Water is required for all physiological functions of the plant and is vital to all living species. It serves as a medium in which most compounds dissolve. The protoplasm of the cells is nothing more than water in which various molecules dissolve and (many particles) are suspended.
A watermelon has approximately 92% water, but most herbaceous plants contain about 10 to 15% of their fresh weight as dry matter. Of course, the distribution of water within a plant varies; woody regions have very little water, whereas soft parts have a lot. A seed may appear dry, yet it still contains water; otherwise, it would not be alive and breathing!
Terrestrial plants consume a large quantity of water each day, but the majority of it is lost to the atmosphere by evaporation from the leaves, also known as transpiration. A mature corn plant absorbs over three liters of water per day, whereas a mustard plant absorbs water equal to its own weight in approximately five hours. It is not unexpected, given the tremendous demand for water, that water is frequently the limiting factor for plant growth and productivity in both agricultural and natural situations
Plant Water Relations
The transfer of water, nutrients, and other materials from one section of the plant to another is referred to as transport in plants. Plants rely on their transport system for growth, survival, and reproduction. Water transport in plants is critical for sustaining the turgor pressure required for cell structure and function.