ISHS Acta Horticulturae 449: II International Symposium on Irrigation of Horticultural Crops
NEW CONCEPTS IN PLANT WATER RELATIONS: RELEVANCE TO HORTICULTURAL PRODUCTION |
| Author: | H.G. Jones |
| Keywords: | Carbon isotope discrimination, signalling, water potential, water-use-efficiency, xylem cavitation |
| Abstract:
In the past ten years or so there have been a number of significant advances in understanding of plant water relations together with a few new misconceptions. This paper reviews some of these, indicating their potential importance to horticultural production. The topics discussed include the mechanism of water transport in plants and the validity of water potential measurements with a pressure chamber, the importance of signalling processes between roots and shoots, and the use of carbon-isotope studies for improving water-use efficiency. Opportunities for improved irrigation scheduling by the use of plant based measures of water status is also discussed. | |
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