ISHS Acta Horticulturae 171: I International Symposium on Water Relations in Fruit Crops
EFFECTS OF ETHEPHON ON WATER BALANCE OF GRAPEVINE PLANTS WITH AND WITHOUT FRUITS |
| Authors: | F. De Lorenzi, C. Giulivo |
| Abstract:
2-chloroethylphosphonic acid (CEPA) modified leaf water potential (LWP) and stomata conductance (Cs) both in intact and defruited plants. The effect, related to the chemical concentration, was stronger in absence of fruits. Immediately after CEPA application (at 100 ppm) an enhancement of Cs was observed in intact plants. During the noon stress period the chemical, at 300 ppm, increased Cs in defruited plants. LWP was little affected by CEPA, although 300 ppm induced a slightly higher LWP compared with treatment at 100 ppm and with the control plants. Effects of CEPA were still evident on the day after the application of the chemical. Differences tended to disappear during the second day after treatment. | |
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