ISHS Acta Horticulturae 89: Symposium on Water Supply and Irrigation
ROOT TEMPERATURE EFFECT ON APPARENT RESISTANCE TO WATER IN THREE CUCURBIT SP. |
| Authors: | A. Meiri, Z. Plaut, I. Rilska |
| Abstract:
Young melons, cucumbers and squash plants in pots were grown under uniform conditions and exposed for 3–4 days to 4 root temperatures: 11, 17, 22 and 27°C. Measurements were carried out on whole transpiring plants and exuding detopped root systems. Higher root temperature resulted in an increase in plant growth, transpiration and exudation rates; leaf water potentials and stomata conductance were also raised at the higher soil temperatures. Calculated apparent root resistance for the whole plants and the detopped root systems indicated a reduction in resistance with elevation of temperature. This effect was strongest in the lower temperatures. It was also found that melons were most sensitive to low root temperature. | |
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