‘Navelina’ sweet orange trees on five rootstocks in Northern Parana state, Brazil

AUTOR(ES)

Cruz, Maria Aparecida da

FONTE

Rev. Bras. Frutic.

DATA DE PUBLICAÇÃO

03/06/2019

RESUMO

Resumo Estudos sobre porta-enxertos e copas têm grande importância para a produção de citros. O objetivo do estudo foi avaliar o crescimento vegetativo, a produção das plantas e a qualidade dos frutos de laranja ‘Navelina’ enxertadas sobre cinco porta-enxertos na região Norte do Paraná, Brasil. O delineamento experimental foi de blocos ao acaso, com seis repetições, duas plantas por parcela e cinco tratamentos: limão ‘Cravo’; tangerina ‘Cleópatra’; tangerina ‘Sunki’, citrumelo ‘Swingle’ e citrange ‘Fepagro C-13’. Foram avaliados crescimento vegetativo,desempenho produtivo das plantas e características físico-químicas dos frutos. A tangerina ‘Sunki’ proporcionou maior volume de copa às plantas de laranja ‘Navelina’, enquanto o citrumelo ‘Swingle’, o citrange ‘Fepagro C-13’ e o limão ‘Cravo’ proporcionaram menor volume. Comparado ao limão ‘Cravo’, o citrumelo ‘Swingle’ proporcionou maior produção acumulada e eficiência produtiva à laranja ‘Navelina’. Todos os porta-enxertos avaliados induziram boa qualidade físico-química aos frutos de laranja ‘Navelina’.Abstract Studies on rootstocks and scions are of major importance for citrus crop production. The goal of this study was to evaluate vegetative growth, yield performance, and fruit quality of ‘Navelina’ sweet orange trees grafted on five different rootstocks in Northern Parana state, Brazil. The experimental design was completely randomized blocks, with six replications, two plants per plot, and five treatments: ‘Rangpur’ lime; ‘Cleopatra’ mandarin, ‘Sunki’ mandarin; ‘Swingle’ citrumelo; and ‘Fepagro C-13’ citrange. Tree vegetative growth, yield performance, and fruit physical-chemical characteristics were analyzed. ‘Sunki’ mandarin provided the largest canopy volume for ‘Navelina’ sweet orange trees, whereas ‘Swingle’ citrumelo, ‘Fepagro C-13’ citrange, and ‘Rangpur’ lime provided a smaller volume for tree canopy. Compared to Rangpur lime, ‘Swingle’ citrumelo provided higher accumulated yield and production efficiency for ‘Navelina’ sweet orange trees. All rootstocks induced good physical and chemical quality to ‘Navelina’ sweet orange fruits.

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