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Soil/root water bal
For 330 Soil and root water balance, many from Taiz & Zeiger 2002
| Term | Definition |
|---|---|
| Apoplastic path | Path of water movement exclusively through the cell wall without crossing any membranes. |
| Available water | Difference in soil water content between field capacity and permanent wilting point; synonymous with water holding capacity. |
| Casparian strip | A radial band in endodermal cell walls that is impregnated with suberin, a waxlike, hydrophobic substance. |
| Cortex | Layer of the plant stem or root bounded on the outside by the epidermis and on the inside by the endodermis. |
| Endodermis | The innermost layer of the cortex that contains the casparian strip and regulates the flow of materials between the cortex and the vascular tissues. |
| Field capacity | Water held by a soil after gravitational water has drained. |
| Hydraulic conductivity | A measure of the ease with which water moves through a media such as soil or a membrane. |
| Matrix potential | A component of water potential caused by the adhesion of water molecules to insoluble solids. |
| Soil texture | Proportional distribution of soil particle sizes. |
| Symplastic path | Path of water movement between symplast (cytoplasm) of adjacent cellsinside of cells and through plasmodesmata. |
Created by:
mdcoleman
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