Abstract
ABSTRACT The objective of this study was to evaluate the effect of pruning intensity on yield and quality of blueberries fruits. It was evaluated the cultivar Misty. The treatments were: absence of pruning; light pruning; regular pruning and drastic pruning. The experimental design was randomized blocks with four replications. The variables analyzed were fruit production, fruit size, pH, total soluble solids (TSS) and total titratable acidity (TTA), and the bioactive compounds such as phenolic compounds, anthocyanins and antioxidant activity. The plants that received drastic pruning showed higher averages of production and fruit size. The highest concentrations of phytochemical compounds in blueberry fruits occurred as pruning was more drastic. The use of different intensity of pruning can modify the productive behavior and postharvest quality of fruits.
Highlights
Brazil is the major producer of sweet orange [Citrus sinensis (L)
The main rootstock used for citrus in Paraná is ‘Rangpur’ lime (C. limonia Osb.), which has several favorable characteristics (LEITE JUNIOR, 1992)
The rootstocks included in the study were ‘Rangpur’ lime (C. limonia Osb.), ‘Cleopatra’ (C. reshni hort ex Tanaka) and ‘Sunki’ (C. sunki hort ex Tanaka) mandarins, ‘Fepagro C-13’ citrange [C. sinensis (L.) Osb. × Poncirus trifoliata (L.) Raf], and ‘Swingle’ citrumelo [C. paradisi Macfad. cv
Summary
Brazil is the major producer of sweet orange [Citrus sinensis (L). Osbeck] worldwide and Paraná is the third largest producer of this fruit among the Brazilian states. Production is based on only four cultivars (AULER et al, 2014). The main rootstock used for citrus in Paraná is ‘Rangpur’ lime (C. limonia Osb.), which has several favorable characteristics (LEITE JUNIOR, 1992). Citrus production is highly vulnerable due to the low genetic diversity among the citrus scions and the use of primarily a single rootstock. There is a need to introduce new scion and rootstock cultivars to diversify the genetics and to provide more highly prized options for growers and the citrus industry
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