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Investigating the Effect of Chilling on the Water Potential of Maris Piper Potatoes
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- Words:
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- Submitted:
- Sat Jul 05 2008
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... Investigating the Effect of Chilling on the Water Potential of Maris Piper Potatoes Osmosis is the net diffusion of water molecules from a region of high water potential to a region of lower water potential across a partially permeable membrane. Deionised water has the highest water potential with a value of 0 kPa. Solutions have a water potential below this and the greater the concentration of solutes the lower the water potential (Toole and Toole, 1995). Plant cells are bounded by a partially permeable plasma membrane, which is surrounded by a fully permeable cellulose cell wall. The cytoplasm and vacuole of a plant cell contains water with many solutes such as glucose, mineral ions and enzymes, all of which contribute to a low water potential. Soil water generally has a higher water potential than plant cells, which allows water to be absorbed down a diffusion gradient. Plant cells will continue to absorb
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