ISHS Acta Horticulturae 427: Strategies to Optimize Wine Grape Quality
VARIATION IN LEAF WATER LOSS IN TABLE AND WINE GRAPES (VITIS VINIFERA L.). |
| Authors: | G. Fanizza, L. Cazzatello, P. Resta |
| Keywords: | screening, genotypes, cuticolar transpiration, drought tolerance |
| Abstract:
The rate of leaf water loss (RLWL) was measured in excised leaves of table and wine grapes (Vitis vinifera) grown in a rainfed environment (Southern Italy). Variation of RLWL along the shoot was detected. Young and fully expanded leaves, preferably with the same SPAD value, were suggested for a better determination of the RLWL. Variability in table and wine grape cultivars was observed for RLWL and other characters sensitive to water stress (shoot growth, leaf senescence); no significant correlation was found among these parameters. A multiple character selection approach and a target environment are suggested for screening grape genotypes in rainfed environments. | |
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