RESUMO

This study aimed at evaluating the agronomical performance of 'Pineapple' sweet orange grafted on ten rootstocks, in 2011-2017 harvests, so as to recommend the best combinations to be commercially explored in citrus growing regions in Bahia and Sergipe states, Brazil. An experiment wasinstalled to test ten rootstock for 'pineapple' sweet orange: 'Santa Cruz' Rangpur lime, 'Red Rough' Lemon, 'Orlando' Tangelo, 'Sunki Tropical' Mandarin, 'Swingle' citrumelo, the citrandarins 'Indio' and 'Riverside' and the hybrids HTR-051, LVKxLCR-010 and TSKxCTTR-002. The trial was installed in 2008 in the municipalityof Umbauba in Sergipe. The experimental design was complete randomized blocks with four replications and two plants per plot. Plant spacing was 6 x 4 m which corresponds to 416 plants per hectare and the orchard was rainfed and followed conventional management. The following agronomical parameters were evaluated: vegetative growth, drought tolerance, yield and physico-chemical quality of fruits as well as the abundance of phytophagous mites. Both hybrids LVK x LCR ­ 010 and TSKC x CTTR-002 and the 'Santa Cruz' rangpur lime bestowed higher tolerance to the dry period on the 'Pineapple' orange tree, by comparison with higher water deficit susceptibility conferred by the 'Orlando' tangelo and the 'Swingle' citrumelo. Rootstocks HTR-051, 'Riverside' citrandarin, 'Swingle' citrumelo and TSKC x CTTR-02 induced plants to remain small and, thus, showed aptitude for culture densification. Cumulative yield of the 'Pineapple' orange was higher on rootstocks 'Red Rough' lemon and 'Santa Cruz' Rangpur lime, the hybrid LVK x LCR-010 and 'Sunki Tropical'. Yield efficiency was not influenced by the rootstocks. Physico-chemical quality of fruits of 'Pineapple' orange is affected by the rootstocks and meets the requirements of juice industries. Regarding plant resistance, the rootstocks did not influence the population density of mites P. oleivora, E. banksi and T. mexicanus on 'Pineapple' oranges. Results show that both rootstocks 'Red Rough' lemon and 'Santa Cruz' rangpur lime conferred high regularity to 'Pineapple' orange trees in citrus growing regions in Bahia and Sergipe states

O objetivo deste trabalho foi avaliar o desempenho agronômico da laranjeira 'Pineapple' em combinação com dez porta-enxertos, nas safras 2011-2017, com vistas à recomendação das melhores combinações para exploração comercial na região citrícola dos estados da Bahia e de Sergipe. O experimento consistiu de laranja doce 'pineapple' enxertado nos porta-enxertos limoeiros 'Cravo Santa Cruz', limoeiro 'Rugoso Vermelho', tangeleiro Orlando, tangerineira 'Sunki' Tropical, citrumelo 'Swingle', citrandarins 'Indio', 'Riverside', além dos híbridos HTR ­ 051 e LVK x LCR ­ 010 e 'TSKC x CTTR ­ 002'. O trabalho foi instalado em 2008, no município de Umbaúba, em Sergipe, no delineamento experimental de blocos ao acaso, com quatro repetições, duas plantas por parcela, no espaçamento de 6m x 4m, correspondendo a uma população de 416 plantas· ha-1, com manejo em sistema de produção convencional, sem o uso de irrigação. Os seguintes parâmetros agronômicos foram avaliados: crescimento vegetativo, tolerância à seca, produção e qualidade físico-química de frutos, além da abundância de ácaros fitófagos. Os híbridos LVK x LCR - 010 e TSKC x CTTR - 002, assim como o limoeiro 'Cravo Santa Cruz', conferiram um maior nível de tolerância ao período seco, em contraste com maior suscetibilidade à seca relacionada ao tangelo 'Orlando' e ao citrumelo 'Swingle'. Os porta-enxertos HTR - 051, citrandarin 'Riversidade', citrumelo 'Swingle' e TSKC x CTTR - 002 induziram menor porte às plantas, demonstrando aptidão ao adensamento de plantio. A produção acumulada da laranjeira 'Pineapple' foi maior sobre os porta-enxertos limoeiros 'Rugoso Vermelho' e 'Cravo Santa Cruz', híbrido LVK x LCR - 010 e tangerineira 'Sunki Tropical'. A eficiência produtiva não foi influenciada pelos porta-enxertos. A qualidade física e química de frutos da laranjeira 'Pineapple' foi afetada pelos porta-enxertos e atendeu aos padrões exigidos pela indústria de sucos. Os porta-enxertos estudados não causaram variações nos níveis de populações dos ácaros Phyllocptruta oleivora, Eutetranychus banksi e Tetranychus mexicanus. Com base nos resultados conclui-se que os limoeiros 'Rugoso Vermelho' e 'Cravo Santa Cruz' determinam maior regularidade de produção de frutos à laranjeira 'Pineapple' nas regiões produtoras da Bahia e de Sergipe

Assuntos

RESUMO

Rootstocks influence certain characteristics of the scion, such as vigor, fruit yield and quality, and tolerance to biotic and abiotic factors. In conventional citrus breeding programs, hybridization is the main method used for obtaining rootstock varieties. Between Sept and Oct 2006, controlled pollinations were carried out resulting in nine progenies, totaling 461 hybrid seedlings. The female parents were the ‘Santa Cruz Rangpur lime (SCRL) and the ‘Sunki of Florida mandarin (SFM), while the male parents, in addition to this mandarin, were the ‘Indio and ‘Riverside citrandarins, the ‘Thomasville citrangequat (THOM), the ‘Swingle citrumelo, the ‘Argentina citrange (AGC) and the ‘Benecke trifoliate orange (BKTO). Fruit setting rates of these crosses were measured and the hybrids generated were planted in the field in 2008 and evaluated from 2010 to 2014, for the variables of plant mortality, visual vigor, plant height and trunk diameter. The descriptive statistics mean, variation range, coefficient of variation and Pearson skewness coefficient were calculated. Data were submitted to analysis of variance and the means of the treatments were grouped by the Scott-Knott test, both at 5 % significance. The progenies, having the ‘Sunki mandarin as the female parent, presented higher fruit setting rates and lower plant mortality rates than those obtained from the female parent ‘Rangpur lime, while zero plant mortality was observed in the SFM × BKTO cross. The crosses SCRL × SFM, SFM × BKTO, SFM × AGC and SFM × THOM have the potential to generate vigorous hybrids, resulting in rootstock varieties adapted to the landscape unit of Coastal Tableland.(AU)

Assuntos

RESUMO

Rootstocks influence certain characteristics of the scion, such as vigor, fruit yield and quality, and tolerance to biotic and abiotic factors. In conventional citrus breeding programs, hybridization is the main method used for obtaining rootstock varieties. Between Sept and Oct 2006, controlled pollinations were carried out resulting in nine progenies, totaling 461 hybrid seedlings. The female parents were the ‘Santa Cruz Rangpur’ lime (SCRL) and the ‘Sunki of Florida’ mandarin (SFM), while the male parents, in addition to this mandarin, were the ‘Indio’ and ‘Riverside’ citrandarins, the ‘Thomasville’ citrangequat (THOM), the ‘Swingle’ citrumelo, the ‘Argentina’ citrange (AGC) and the ‘Benecke’ trifoliate orange (BKTO). Fruit setting rates of these crosses were measured and the hybrids generated were planted in the field in 2008 and evaluated from 2010 to 2014, for the variables of plant mortality, visual vigor, plant height and trunk diameter. The descriptive statistics mean, variation range, coefficient of variation and Pearson skewness coefficient were calculated. Data were submitted to analysis of variance and the means of the treatments were grouped by the Scott-Knott test, both at 5 % significance. The progenies, having the ‘Sunki’ mandarin as the female parent, presented higher fruit setting rates and lower plant mortality rates than those obtained from the female parent ‘Rangpur’ lime, while zero plant mortality was observed in the SFM × BKTO cross. The crosses SCRL × SFM, SFM × BKTO, SFM × AGC and SFM × THOM have the potential to generate vigorous hybrids, resulting in rootstock varieties adapted to the landscape unit of Coastal Tableland.

Assuntos

RESUMO

Persian lime (PL) [Citrus latifolia (Yu. Tanaka) Tanaka] is an important species both for domestic fresh fruit consumption in Brazil as well as the export market, since the country is one of the largest producers in the world despite the fact that, in commercial plantations, it is still not uncommon to find trees with low productivity and high plant vigor of unknown origin. Selections of Persian lime CNPMF2000, CNPMF2001, CNPMF01, CNPMF02, IAC5, IAC5.1, Bearss, Persian58, and 5059, were therefore grafted onto Swingle citrumelo [C. paradisi Macfad. cv. Duncan × Poncirus trifoliata (L.) Raf.] rootstocks and evaluated in Cruz das Almas, Bahia, Brazil in a field experiment conducted in a completely randomized block design with five replications and two trees per plot. The biometric attributes (canopy height, diameter and volume), yield parameters (yield during the off-season harvest period, yield per plant, production efficiency), and fruit quality traits, were evaluated. The CNPMF2001, CNPMF01, CNPMF02, IAC5, and Bearss selections had 5-11 % shorter trees than the other cultivars. CNPMF01, CNPMF02, Persian58, and 5059 presented higher yield efficiency values, between 3.1-3.4 kg m3, and higher yield levels during the off-season harvest periods. The Bearss, Persian58, CNPMF2000, IAC5.1 and 5059 selections had more acid fruits and the latter three, smaller fruits. Based on their horticultural performance up to eight years of age, CNPMF01, CNPMF02, Persian58 and 5059 selections were the most promising varieties of Persian lime.

Assuntos

RESUMO

Persian lime (PL) [Citrus latifolia (Yu. Tanaka) Tanaka] is an important species both for domestic fresh fruit consumption in Brazil as well as the export market, since the country is one of the largest producers in the world despite the fact that, in commercial plantations, it is still not uncommon to find trees with low productivity and high plant vigor of unknown origin. Selections of Persian lime CNPMF2000, CNPMF2001, CNPMF01, CNPMF02, IAC5, IAC5.1, Bearss, Persian58, and 5059, were therefore grafted onto Swingle citrumelo [C. paradisi Macfad. cv. Duncan × Poncirus trifoliata (L.) Raf.] rootstocks and evaluated in Cruz das Almas, Bahia, Brazil in a field experiment conducted in a completely randomized block design with five replications and two trees per plot. The biometric attributes (canopy height, diameter and volume), yield parameters (yield during the off-season harvest period, yield per plant, production efficiency), and fruit quality traits, were evaluated. The CNPMF2001, CNPMF01, CNPMF02, IAC5, and Bearss selections had 5-11 % shorter trees than the other cultivars. CNPMF01, CNPMF02, Persian58, and 5059 presented higher yield efficiency values, between 3.1-3.4 kg m3, and higher yield levels during the off-season harvest periods. The Bearss, Persian58, CNPMF2000, IAC5.1 and 5059 selections had more acid fruits and the latter three, smaller fruits. Based on their horticultural performance up to eight years of age, CNPMF01, CNPMF02, Persian58 and 5059 selections were the most promising varieties of Persian lime.(AU)

Assuntos