Xylematic tissues are at the base of some water and nutrient transport processes. The aim of this study was to investigate xylem characteristics such as vessel density and vessel dimension in order to provide preliminary data for future physiological studies. In other species it was demonstrated that xylem was at the base of hydraulic equilibrium and tree vigour. In this study the three most important Italian cultivars were investigated: 'Tonda Gentile delle Langhe' (TGL), 'Tonda Romana' (TR) and 'Tonda di Giffoni' (TG). Number of vessels per mm2 and vessel diameter were measured. TGL had larger vessels than TG and TR. Differences were found also in vessel number per mm2 of xylem tissue. The three more important Italian hazelnut cultivars showed significant differences in xylem vessel characteristics. These three cultivars had different agricultural characteristics such as tree vigour. It is possible that xylem anatomy could be correlated to some different vegetative and productive behaviour of these three cultivars.
Xylem characteristics in some cultivars of Corylus avellana L.
FARINELLI, Daniela
2012
Abstract
Xylematic tissues are at the base of some water and nutrient transport processes. The aim of this study was to investigate xylem characteristics such as vessel density and vessel dimension in order to provide preliminary data for future physiological studies. In other species it was demonstrated that xylem was at the base of hydraulic equilibrium and tree vigour. In this study the three most important Italian cultivars were investigated: 'Tonda Gentile delle Langhe' (TGL), 'Tonda Romana' (TR) and 'Tonda di Giffoni' (TG). Number of vessels per mm2 and vessel diameter were measured. TGL had larger vessels than TG and TR. Differences were found also in vessel number per mm2 of xylem tissue. The three more important Italian hazelnut cultivars showed significant differences in xylem vessel characteristics. These three cultivars had different agricultural characteristics such as tree vigour. It is possible that xylem anatomy could be correlated to some different vegetative and productive behaviour of these three cultivars.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
