Estudio fenoclimático en variedades de vid autorizadas de la dop Ribeiro (Ourense-España) durante la cosecha 2010

Abstract

Pollen production, phenological behavior and thermal requirements of four authorized grapes varieties (Treixadura, Godello, Loureira and Albariño) in the Ribeiro Designation of Origin were analyzed. The study has been carried out in the municipality of Cenlle (Ourense, Spain) during 2010, over 20 plants of each variety. The highest average production of pollen per plant was recorded in the Treixadura variety (74.393.370 pollen grains), while Loureira register lower average number of pollen grains per plant production (20.619.734 pollen grains). The vegetative cycle, considered as the period from the stage 0 (sprouting) until harvest lasted 195 days for Treixadura, Godello and Loureira and 194 days for the Albariño variety. In order to achieve an accurate ripening of berries, an accumulation of 1.467 gda for Treixadura, Godello and Loureira, and 1.446 gda for Albariño variety were necessary. In this moment, the optimum Brix Index for the harvest has been exceeded in all varieties.