Seleção de cultivares de laranja doce de maturação precoce por índices de desempenho

Abstract

Resumo -O objetivo deste trabalho foi selecionar cultivares de laranja doce de maturação precoce, adequadas para o mercado de frutas in natura e para o processamento industrial, por meio de índices de desempenho. Índices de desempenho para citros foram estabelecidos com base em dados coletados em experimento conduzido na região sudoeste do Estado de São Paulo, envolvendo 12 cultivares de laranja doce de maturação precoce. Resultados pioneiros foram obtidos na identificação de cultivares superiores. Em comparação com a laranja 'Hamlin', cultivar padrão de maturação precoce, identificaram-se as laranjas 'Valência 2' e 'Salustiana' com potencial para o mercado de frutas in natura, e a laranja 'Westin', para o processamento industrial.Termos para indexação: Citrus sinensis, características fenotípicas, índice de seleção, qualidade do fruto, seleção simultânea, sementes. Selection of early-maturing sweet orange cultivars by performance indexesAbstract -The objective of this work was to select adequate early-maturing sweet orange cultivars for the fresh fruit market and for industrial processing using performance indexes. Performance indexes for citrus were established from data collected in an experiment carried out in the southwest region of the state of São Paulo, involving 12 early-maturing sweet orange cultivars. New results were obtained by identifying cultivars with superior characteristics. In a comparison with 'Hamlin' sweet orange, a standard early-maturing cultivar, 'Valência 2' and 'Salustiana' were considered better materials for the fresh fruit market, whereas 'Westin' sweet orange was identified as a superior cultivar for orange juice processing.

Performance of the pineapple sweet orange on different rootstocks

“…Medeiros et al (2013) found values below 10° Brix in fruits from 'Pineapple' sweet orange tree grown in Pernambuco. In São Paulo (SP), the 'Pineapple' sweet orange grafted on 'Sunki Tropical' mandarin exhibited 11ºBrix (CAPUTO et al, 2012).…”

“…For instance, the 'Pineapple' sweet orange can be cultivated in Brazil's northeastern region in order to yield fruits for juice processing. This orange clone, which was brought from California, USA (PASSOS; CUNHA SOBRINHO; SOARES , is a moderately vigorous and highly productive plant, whose precocious maturation (SOBRINHO; PASSOS; CAPUTO et al, 2012) occurs in mid-season, i. e., from May to June (MEDEIROS et al, 2013). Its fruits exhibit light orange pulp and rind, besides a large number of seeds (PASSOS; CUNHA SOBRINHO; SOARES .…”

“…Insertion of alternative citrus varieties in traditional ones has shown that the former have adapted well to several regions, a fact that has led to increase in productivity and fruit quality for both in natura fruit markets and industries (MARTINS et al, 2014;CAPUTO et al, 2012), besides mitigating negative impacts caused by abiotic and biotic stress in citrus groves (MACHADO; YALY; BATIANEL, 2011;SCAPIM;STENZEL, 2007;FRANÇA, et al, 2016). The recommendation of the combination scion/rootstock may be evaluated by characteristics such as growth, vigor, precocious production, volume of production, fruit development, fruit maturation, fruit quality, water deficit tolerance and disease/pest tolerance (SILVA et al, 2017).…”

Production, Physical-Chemical Quality and Bioative Compounds of Misty Blueberry Fruit Under Different Pruning Intensities

“…However, higher numbers of seeds in 'Jaffa' sweet orange fruits have been observed in other studies, to as many as 18 seeds per fruit (CASTLE; BALDWIN, 2011). For industrial purposes, the number of seeds should preferably fall between zero and eight seeds per fruit (DONADIO et al, 1999), while citrus fruits for the fresh market should have a minimal number seeds or even be seedless (CAPUTO et al, 2012;FERRARO et al, 2006;SENNA et al, 2007).…”

Laranjeiras mediterrâneas de meia-estação em condições de sequeiro em clima subtropical no Brasil

“…Além disso, pode haver uma ampliação na oferta de frutos de boa qualidade para a indús-tria e para o mercado em fresco (Silva et al, 2006) em épocas de baixa disponibilidade dos mesmos , Caputo et al, 2012. Tais fatores motivaram o estudo do desempenho horticultural de variedades portuguesas e mediterrâneas de laranjeira doce com frutos de maturação na meia estação, pouco ou nunca avaliadas no Brasil, com o objetivo de oferecer novas opções de cultivares produtivas e com frutos de boa qualidade para os citricultores brasileiros.…”