Desbaste De Mudas Tipo Filhote Do Abacaxi Cv. Pérola: 1. Produção E Qualidade Do Fruto

Abstract

RESUMO -O abacaxizeiro Pérola tem como uma das suas principais características a geração de elevado número de mudas tipo filhote, formando um cacho na parte superior do pedúnculo. Os filhotes desenvolvem-se no mesmo período da formação do fruto. Em plantio comercial na região do litoral Norte da Bahia, foi desenvolvido este estudo com o objetivo de avaliar o efeito do desbaste de mudas tipo filhote sobre aspectos vegetativos e produtivos do abacaxi cv. Pérola, cultivado sob condições de sequeiro. Nesta primeira parte, serão apresentados os efeitos sobre a produção e a qualidade do fruto. Em delineamento em blocos completos ao acaso, com sete repetições, foram estudados seis tratamentos, sendo a testemunha, sem desbaste, e os seguintes cinco níveis de desbaste de mudas tipo filhote: 1 -todas as mudas desbastadas; 2 -mantidas duas mudas do lado do sol poente; 3 -mantidas quatro mudas, com desbaste, de cima para baixo; 4 -mantidas quatro mudas, com desbaste, de baixo para cima; 5 -mantidas seis mudas. Por meio da análise de variância e teste de comparação entre as médias, foram avaliados aspectos da qualidade química e física dos frutos, tais como sólidos solúveis totais (SST), acidez total titulável (ATT), relação SST/ATT, peso do fruto com coroa, comprimento do fruto, peso e comprimento da coroa, produtividade, número e o peso médio dos frutos. O desbaste não determinou diferenças estatísticas para a produtividade da cultura e o peso do fruto, observando-se, no entanto, tendência consistente para a elevação dos valores deste último. O desbaste de mudas não afetou a qualidade do fruto, que apresentou características químicas, físicas e físico-químicas dentro dos padrões da cultivar Pérola. Termos para indexação:Ananas comosus (L.) Merrill, prática cultural, rendimento. SLIPS THINNING FROM THE PINEAPPLE CV. PÉROLA -1. PRODUCTION AND FRUIT QUALITYABSTRACT -One of the main characteristics of the pineapple cv. Pérola is the generation of numerous plantlets called slips located at the upper part of the peduncle. The slips develop at the same period of fruit formation. In a commercial plantation of the North Coast region of Bahia State, Brazil, a study was carried out in order to evaluate the effect of slip thinning on vegetative and productive aspects of 'Pérola' pineapple, grown without irrigation. This paper presents the results on yield, fruit weight and quality. In a completely randomized blocks design, with seven replications, were studied six treatments represented by the control (without thinning) and five levels of slips thinning: 1 -all slips removed; 2 -two slips kept on the sunset side; 3 -four slips kept, from top to bottom; 4 -four slips kept, from bottom to top; 5 -six slips kept. By way of analyses of variance and means comparison tests were evaluated the following variables: total soluble solids (TSS), total titrable acidity (TTA), TSS/TAA ratio, fruit length, crown length and weight, yield, fruit number and average weight. The slip thinning did not result in significant statistical differences, but the...

Selective pruning in pineapple plants as means to reduce heterogeneity in fruit quality

“…Singapore Spanish in excess to two slips that were kept on the plants and found no significant effect of slip pruning on fruit weight and fruit length. Similar results were also found by De Lima et al ( 2001 ) on cv. Pérola.…”

“…Our results agree with the results obtained with cv. Pérola in Brazil for which slip pruning did not affect any fruit variable other than crown weight (De Lima et al 2001 ). In the study by De Lima et al ( 2001 ), slips were pruned at 90 days after flowering induction; in our study, slips were pruned based on the development stage of the plant.…”

“…Pérola in Brazil for which slip pruning did not affect any fruit variable other than crown weight (De Lima et al 2001 ). In the study by De Lima et al ( 2001 ), slips were pruned at 90 days after flowering induction; in our study, slips were pruned based on the development stage of the plant. The lack of effect of slip pruning on average fruit quality was also confirmed by Fassinou Hotegni et al ( in press ) who investigated if the effect of pruning was different for plants having a different infructescence length at the moment of pruning.…”

Estimation of Genetic Parameters of Turiaçu Pineapple Clones and Genetic Correlation between Traits

“…This is an important trait for farmers because they use these slips for future plantings, the slips protect the fruits from sunburn [18] and they can be sold, which ensures an extra source of income [19].…”

Management of slips and its effect on growth and production of 'Pérola' pineapple plants

“…These results suggest that the trauma suffered by the slips at their transplantation to the nursery affects their development. In addition, the mother-plant is an important source of nutrients for the slips, which become the main sinks after fruit removal (Lima et al, 2001(Lima et al, e 2002. In spite of growing more slowly, nursery slips developed enough to reach minimum size and weight (30 cm and 200 g) for their planting in the field, after about four to five months in nursery (data not shown).…”