Abstract:
The results of a trial carried out in the Catania plain (37°00' N, 2°35' W) using two water regimes (50% and 100% of ETM) and two genotypes of globe artichoke with different propagation methods ('Violetto di Sicilia' vegetatively propagated and 'Talpiot' seed propagated) in order to study the physiological response of the plant to variations in the soil water content, are reported.
On average of all measurements carried out during the irrigation season, leaf transpiration and stomatal conductance resulted significantly different due to both studied factors.
However, the differences between the genotypes were much higher than those between the water regime treatments.
Leaf water potential, measured on a representative day of the irrigation season, resulted significantly different between the genotypes, while it did not show any significant difference between the two water regime treatments.
The immediate formation and the rapid growth of the root in the seed propagated 'Talpiot', compared to the vegetative propagated 'Violetto di Sicilia', could account for the different behaviour of the two varieties.
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