O objetivo do trabalho foi avaliar o efeito do ácido giberélico (AG3) na podridão e na qualidade físico-química dos cachos da videira ‘Sauvignon Blanc’. Gibberellin Grapevines Cluster stretchingĪ maturação das uvas é prejudicada pelas condições climáticas, devido ao prolongado período chuvoso e desta forma, facilita a proliferação de doenças como a podridão dos cachos de uvas, causada pelo fungo Botrytis cinerea, antes mesmo do ponto ideal para colheita. In ‘Sauvignon Blanc’ grapevine, GA3 reduced the percentage of clusters rotting and improved the cluster and rachis length characteristics and titrable acidity. The cluster width cluster, rachis and berry mass and the soluble solids were not influenced by application of GA3. The cluster and rachis length increased with application of GA3. The percentage of clusters rotting and maturation index decreased, however, the titratable acidity increased with GA3 doses. The GA3 treatments were at the doses of 0 (control) 2 4 6 and 8 mg L-1 of GA3. The experiment was carried out in the production season of 20 in Campanha region in Rio Grande do Sul, Brazil. The aim of the study was to evaluate the effect of gibberellic acid (GA3) on rot and on physical-chemical quality of ‘Sauvignon Blanc’ grapevine. The ripening of grapes is impaired by climatic conditions due to the prolonged rainy season and thus facilitates the proliferation of diseases such as grape clusters rotting, caused by the fungus Botrytis cinerea, even before the ideal harvesting point. Professor, Department of Plant Science, Universidade Federal de Pelotas, Pelotas, Rio Grande do Sul, Brasil E-mails: 0000-0002-6519-4972) About the authors Professor, Department of Plant Science, Universidade Federal de Pelotas, Pelotas, Rio Grande do Sul, Brasil E-mails: 0000-0002-6519-4972) Paulo Mello-Farias Agronomist Engineer, postgraduate student in Plant Production, Department of Biotechnology, Universidade do Estado de Santa Catarina.E-mail: Marines Batalha Moreno KirinusĪgronomist Engineer, Doctor in Agronomy, Professor, Instituto Federal Sul-Riograndense, Department of Plant Science, Pelotas, Rio Grande do Sul, Brasil E-mail: Caroline Farias BarretoĪgronomist Engineer, postgraduate student in Agronomy, Temperate Climate Fruticulture, Department of Plant Science, Universidade Federal de Pelotas, Pelotas, Rio Grande do Sul, Brasil E-mail: Carlos Sebastián Pérez LamelaĪgronomist Engineer, Doctor of Agronomy, Temperate Climate Fruticulture, Pelotas, Rio Grande do Sul, Brasil E-mail: Marcelo Barbosa Malgarim
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