ISHS Acta Horticulturae 171: I International Symposium on Water Relations in Fruit Crops
EFFECT OF ROOTSTOCK ON WATER BALANCE OF GOLDEN DELICIOUS APPLE TREES |
| Authors: | C. Giulivo, G. Ponchia, A. Gianola, A. Pitacco |
| Abstract:
The performance of three different apple rootstocks (M9, M106 and M7) was tested in Golden Delicious trees with low and high fruit load and under two water regimes. Midday leaf water potential was higher in trees on M9, lower in those on M7 and intermediate on M106. Trees on M7 showed the highest stomatal conductance in non limiting water conditions. This was equal or higher on M9 and M106 in water stress conditions, although the recovering after watering was more rapid on M7. From these results it appears that M9 induces water conservation, while M7 allows relatively free water use. | |
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