Coltivazione e adattamento di cloni di pioppo (Populus spp.) da biomassa nel Sud Italia (Puglia) (original) (raw)

Abstract

The poplars (Populus spp.) are considered the most sensitive to water deficit condition among the ligneous species for biomass production for energetic purposes, and their productivity is associated to water supply. In the Mediterranean environment, the main crop limits are connected to evapotranspiration demand, not balanced by the rainfall supply, and death risk especially after the poplar rooting. The interest for poplar as energy crops may also increase in southern areas if new hybrids with high growth rate and resistance to water stress would be selected. To confirm this hypothesis, three recent selected clones (‘Neva’, ‘Dvina’ e ‘Lena’) and two “traditional” ones, taken as a control (‘Luisa Avanzo’ e ‘Bellini’), were considered in order to identify those with physiological characteristics associated with drought tolerance. Among the five clones compared, ‘Lena’ e ‘Dvina’ showed low growth and rooting. “Bellini” has low stomata sensitivity to soil water (high conductance during...

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