ISHS Acta Horticulturae 311: International Walnut Meeting
FLOODING, LEAF GAS EXCHANGE, AND GROWTH OF WALNUT (J. REGIA) SEEDLINGS IN CONTAINERS. |
| Author: | J. Girona |
| Abstract:
The effects of flooding walnut (J. Regia, cv "Serr") seedlings were studied by controlling leaf gas exchange parameters and vegetative growth. Net CO2 assimilation rate (A) decreased after 3 days of flooding, in the same way stomatal conductance (gs) and transpiration rate (E) also decreased, while internal CO2 concentration (Ci) of flooded plants was higher than in non-flooded plants. Leaf darkness and fine-root death were the visual and growth parameters more affected by flooding conditions. Plant recovering after 3 days of flooding was total, therefore an early detection of flooding by leaf gas exchange controls might be a way to avoid flooding damage. | |
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