Fenología de la variedad Treixadura cultivada en la Denominación de Origen Ribeiro (Ourense-España) durante el año 2008

Abstract

The knowledge of the grapevine phenology is of great usefulness in the managing of the vineyard, allowing us to apply the plat protective measures in the phenology stages in which grapevine is more vulnerable to the attack of the different diseases. In this study the phenological behavior and the thermal requirements of the Treixadura variety in the denomination of origin Ribeiro (Ourense, Spain) were described. The work has been carried out in a vineyard situated in Cenlle during the year 2008. Observations have been conducted on 20 plants and the phenology scale standardized by the BB CH has been applied. During the flowering stage, pollen production has been calculated in terms of pollen production by anther and by plant. Finally the ºBrix quantification has been taking into account as a measure of the fruits ripeness. T he vegetative cycle, considered as the period of time from the beginning of the sprouting to the vintage, lasted 194 days with an accumulation of 1,160 GDA. The average production of pollen by anther was 4,216 pollen grains, reaching a value of 34,744,936 pollen grains produced by plant.