Effects of artificial canopy shading on vegetative growth and ripening processes of cv. Nero d'Avola ( L.).

Introduction: The biology of the grapevine ( L.) is clearly influenced by the climatic conditions of the growing environment, where temperature and light play a major role in modifying plant physiology. In the scenario of climatic changes, radiative excess, correlated to the increase in temperature, can concretely subject the photosynthetic apparatus to a condition of light saturation and cause a drastic reduction in photochemical efficiency, giving rise to chronic photoinhibition phenomena.