Abstract
Abstract By considering the few studies related to pineapple cv. Vitória, to know the relationships between the physical and chemical characteristics of the fruits, and they with the “D” leaf, is fundamental. The objective of this work was to evaluate the relationships between “D” leaf, with the physical and chemical characteristics of fruits of pineapple cv. Vitória, under the edaphoclimatic conditions in the North of the State of Espírito Santo. The experiment was carried out in a complete randomized block design in split-plot arrangement with four replications. The data obtained from 433 individually evaluated fruits were analyzed, as it follows: 84 at planting in July and induction at 8 months; 98 at planting in July and induction at 10 months; 84 at planting in July and induction at 12 months; 59 at planting in September and induction at 8 months; 50 at planting in September and induction at 10 months; 58 at planting in September and induction at 12 months. Pearson’s correlation was performed between the characteristics of “D” leaf (length and width) and the physical and chemical aspects of fruits (mass of the fruits with and without crown, fruit length and diameter, pulp volume, translucent area, soluble solids and titratable acidity) for the six treatments. Most of the relationships among the 11 characteristics evaluated were of low magnitude in the six treatments, but correlations of high magnitude and practical application of interest to plant scientists, breeders, farmers and consumers were found. The length and width of the “D” leaf should not be used as indicators of physical and chemical qualities of cv. Vitória. Fruits with higher mass, with or without crown or larger width or diameter present higher pulp content. Fruits with higher mass, with or without crown have lower content of soluble solids.
Highlights
Pineapple is a much appreciated fruit all over the world
Vitória were carried out in this study. The former was planted on July 15 and the second on September 1, 2013, on the Experimental farm owned by Instituto Capixaba de Pesquisa, Assistência Técnica e Extensão Rural (Incaper), located at 19o11’30’’ S and 40o05’46’’ W, in the municipality of Sooretama, Espírito Santo (ES)
The observed difference in the growth of “D” leaf probably occurred due to non-irrigation and water deficit observed in some months (Figure 1), considering that to provide 60 to 100 mm of water per month is the ideal to ensure higher productivity and fruit quality (PY et al, 1984)
Summary
Pineapple is a much appreciated fruit all over the world. In 2013, Brazil ranked as the second largest producer, with about 2.5 million tons of harvested fruits, losing only to Costa Rica, with approximately 2.7 million tons (FAO, 2015). In Espírito Santo, in 2014, the municipality of Marataízes was the largest producer, with 31.108 million fruits harvested. In the northern region of the State of Espírito Santo, despite the low number of producers and few cultivated areas, pineapple cv. Such cultivar is resistant to fusariosis, caused by Fusarium guttiforme considered the main disease of the crop in Brazil, accounting for the low quality of the fruits and losses of up to 40% of the production (INCAPER, 2010)
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