Photosynthesis, Biochemical and Yield Performance of Grapevine Hybrids in Two Rootstock and Trellis Height

Autor(es)

Neto, Francisco Jose Domingues ; Pimentel Jr, Adilson ; Modesto, Lenon Romano ; Moura, Mara Fernandes ; Putti, Fernando Ferrari ; Boaro, Carmen Silvia Fernandes ; Ono, Elizabeth Orika ; Rodrigues, Joao Domingos ; Tecchio, Marco Antonio

• Tipo de documento: Artigo Científico
• Fonte: HORTICULTURAE; v. 9, n. 5, p. 13-pg., 2023-05-18.

Resumo

The interaction between variety, rootstock, and trellis height is important for grapevine management, mainly for producing new varieties of grapes for juice and wine in new wine-growing regions with high production potential. Then, this study aimed to evaluate the rootstocks and trellis height influence on photosynthesis, biochemical, and yield performance for grapevine hybrids. The experiment was carried out in a randomized block design using two factors, rootstocks ('IAC 766' and '106-8 Mgt') and trellis height (until 1.6 and 2.0 m), evaluated for two grapevine hybrids (IAC 138-22 'Maximo' and 'BRS Violeta'). During grapevine flowering, it was evaluated photosynthesis and biochemical performance, for this, the gaseous exchanges were measured using the open system photosynthesis equipment with a CO2 analyzer and water vapor by infrared radiation, being net assimilation rate of CO2, stomatal conductance, transpiration rate, internal CO2 concentration, water use efficiency, carboxylation efficiency (Rubisco), and the flux density of photosynthetically active photons. At the stages of grapevine flowering and ripening berries were evaluated the antioxidant enzymes (peroxidase (POD), superoxide dismutase (SOD), and catalase (CAT)), total soluble proteins, chlorophylls, and SPAD. The interaction between rootstock and trellis heigh influenced varieties' photosynthesis, biochemical, and yield performance. In conclusion under subtropical conditions, better photosynthesis, biochemical, and yield performance were observed when both cultivars were grafted on the 'IAC 766' rootstock. The 'IAC 138-22 Maximo' was trained until 2.0 and grafted on the 'IAC 766' rootstock, increasing grape production and photosynthesis efficiency. In addition, this variety was more productive than 'BRS Violeta'. (AU)

• Processo FAPESP: 16/07510-2 - Impactos de porta-enxertos e sistemas de condução no potencial agronômico, compostos bioativos e aminas biogênicas em uvas e sucos
• Beneficiário: Francisco José Domingues Neto
• Modalidade de apoio: Bolsas no Brasil - Doutorado
• Processo FAPESP: 15/16440-5 - Fenologia, produção e qualidade pós-colheita de variedades de uvas para suco e vinho cultivadas em diferentes regiões no estado de são paulo
• Beneficiário: Marco Antonio Tecchio
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 11/03440-6 - Comportamento de cultivares de uva para mesa e vinho sobre diferentes porta-enxertos
• Beneficiário: Marco Antonio Tecchio
• Modalidade de apoio: Auxílio à Pesquisa - Regular