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  • 1
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    Efeito da autofecundação em cultivares de abacaxi
    FapUNIFESP (SciELO) ; 2003
    In:  Revista Brasileira de Fruticultura Vol. 25, No. 1 ( 2003-04), p. 184-185
    Details
    In: Revista Brasileira de Fruticultura, FapUNIFESP (SciELO), Vol. 25, No. 1 ( 2003-04), p. 184-185
    Abstract: The high level of heterozygosis of parentals used to generate pineapple hybrids has resulted in low efficiency of the pineapple breeding program in conduction at Embrapa Cassava and Fruit Crops. On the other hand, the effects of self fertilization are not well known on pineapple, however this strategy may lead to significant advances in the improvement of that crop. The objective of this work was to evaluate the effects of self pollination in pineapple cultivars. Inflorescences of the cultivars Primavera, Perolera, Roxo-de-Tefé, Pérola and Smooth Cayenne were covered before anthesis in order to promote self fertilization. The resulting seeds were transferred to Petri dishes containing MS medium supplemented with 30 g.L-1 for germination and incubed in growth chamber. During germination it was observed that 16% of the seeds from 'Roxo-de-Tefe' generated albino plantlets. Forty three plants from 'Primavera', five from 'Perolera', eleven from 'Roxo-de-Tefé' and none from 'Pérola' and 'Smooth Cayenne' were obtained. All plants from Primavera presented spineless leaf margin (piping type), suggesting homozygosis for that characteristics, while in the 'Perolera" progeny three plants showed spineless leaf margin and two showed spiny leaves, showing segregation for the character presence of spine. Regarding to 'Roxo-de-Tefé' progeny, eight plants showed violet colored leaves and three with green colored leaves, expressing segregation for leaf color, but all leaves were spiny. The low percentage of germination, slow growth rate and low vigor observed in plants kept under greenhouse conditions as well as nursery, indicate the occurrence of depression by endogamy during these developmental phases.
    Type of Medium: Online Resource
    ISSN: 0100-2945
    URL: Article
    DOI: 10.1590/S0100-29452003000100051
    Language: Unknown
    Publisher: FapUNIFESP (SciELO)
    Publication Date: 2003
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  • 2
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    Produção do mamoeiro em função de adubação com nitrogênio, fósforo e potássio
    FapUNIFESP (SciELO) ; 2004
    In:  Revista Brasileira de Fruticultura Vol. 26, No. 1 ( 2004-04), p. 160-163
    Details
    In: Revista Brasileira de Fruticultura, FapUNIFESP (SciELO), Vol. 26, No. 1 ( 2004-04), p. 160-163
    Abstract: Good yields and quality of fruits are directly linked to a balanced nutrition. At the same way, a plant appropriately well nourished, is able to resist illnesses and has a better potential for reaching high yields. But, in Brazil, nobody knows the behavior and the nourishing requirements of its main varieties of papaya. This work has the objective of determining the nitrogen (N), phosphorus (P) and potassium (K) doses of maximum physical efficiency for the papaya 'Solo'. The experiment, under irrigation, using of 'Sunrise Solo', was carried out in a random block design, with three replications, following a Plan Puebla matrix with three factors, N (40, 240, 400, 560 e 760 kg/ha), P2O5 (20, 120, 200, 280 e 380 kg/ha) e K2O (40, 240, 400, 560 e 760 kg/ha) and 15 treatments. Nitrogen and potassium determined the increase of yield. The maximum record of productivity of papaya fruits was estimated as 93,41 t/ha/years at the first year of crop, reached with 347 and 360 kg/ha/years of N and K2O, respectively, for current found levels of potassium at the soils. The higher levels of papaya harvests at the region of Cruz das Almas, Bahia, for crops started at the beginning of the rain season, occurred in august and September.
    Type of Medium: Online Resource
    ISSN: 0100-2945
    URL: Article
    DOI: 10.1590/S0100-29452004000100042
    Language: Unknown
    Publisher: FapUNIFESP (SciELO)
    Publication Date: 2004
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  • 3
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    Teores foliares de nutrientes em genótipos de bananeira
    FapUNIFESP (SciELO) ; 2006
    In:  Revista Brasileira de Fruticultura Vol. 28, No. 2 ( 2006-08), p. 314-318
    Details
    In: Revista Brasileira de Fruticultura, FapUNIFESP (SciELO), Vol. 28, No. 2 ( 2006-08), p. 314-318
    Abstract: The leaf diagnosis is quite useful for the determination of the nutritional state of plants. The nutritional banana tree demands can differ in accordance with genetic characteristics. The aim of present work was to determinate the macro and micronutrients contents in the third leaf of banana genotypes. Twenty four banana genotypes were selected (triploids and tetraploids), in two production cycles (1999 and 2000), in the Active Germoplasm Bank of Banana at Embrapa Mandioca e Fruticultura Tropical, in Cruz das Almas, Bahia, Brazil. The leaf contents of macronutrients (N, P, K, Ca, Mg and S) and micronutrients (B, Cl, Cu, Fe, Mn and Zn) were determined. The results showed that occurred variation in leaf contents among plants in the same genome group and between the first and second production cycles, with higher medium levels in the second cycle for N, P, Ca, Mg, S, Cu and Mn and lower ones for K, Cl, B, Fe and Zn. The nitrogen contents 21.6 to 28.5 g kg-1 and K 13.7 to 30.8 g kg-1 and they were the macronutrients with the highest contents in the leaves. The chlorine contents was 10.4 to 24.7 g kg-1, manganese 43 to 574 mg kg-1 and iron 56 to 212 mg kg-1,and they were the micronutrients with the highest contents in leaves.
    Type of Medium: Online Resource
    ISSN: 0100-2945
    URL: Article
    DOI: 10.1590/S0100-29452006000200036
    Language: Unknown
    Publisher: FapUNIFESP (SciELO)
    Publication Date: 2006
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  • 4
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    Produtividade e qualidade de maracujá-amarelo irrigado, adubado com nitrogênio e potássio
    FapUNIFESP (SciELO) ; 2003
    In:  Revista Brasileira de Fruticultura Vol. 25, No. 2 ( 2003-08), p. 259-262
    Details
    In: Revista Brasileira de Fruticultura, FapUNIFESP (SciELO), Vol. 25, No. 2 ( 2003-08), p. 259-262
    Abstract: Passion fruit is an outstanding tropical fruit and the north region of Minas Gerais State seems suitable for growing it. A study on nitrogen (N) and potassium (K) levels for maximum physical and economic production was carried out in Quartzarenic Neosol of that region aiming to obtain high yields and superior fruit quality of yellow passion fruits. The experiment was implanted in March 1996, with plants spaced 3.5 m x 5.0 m, and irrigated by microsprinkler. The experimental design was a factorial randomized block with five levels of N (0, 100, 200, 400, and 800 kg/ha/year) and K2O (0, 200, 400, 800, and 1600 kg/ha/year), with four replications. From November/1996 to October/1997 it was observed a negative nitrogen effect on fruit number for the fresh fruit market, but no significant effects on fruit quality. On the other hand, potassium had a positive effect on fruit weight and diameter, but a negative one on yield, mainly for doses of 400 kg of N/ha, and no significant one on fruit quality. Considering yield, it is recommended 100 kg of N and 200 kg of K2O/ha/year, for experiment conditions.
    Type of Medium: Online Resource
    ISSN: 0100-2945
    URL: Article
    DOI: 10.1590/S0100-29452003000200019
    Language: Unknown
    Publisher: FapUNIFESP (SciELO)
    Publication Date: 2003
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  • 5
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    Germinação e crescimento de espécies de maracujá
    FapUNIFESP (SciELO) ; 2006
    In:  Revista Brasileira de Fruticultura Vol. 28, No. 1 ( 2006-04), p. 125-127
    Details
    In: Revista Brasileira de Fruticultura, FapUNIFESP (SciELO), Vol. 28, No. 1 ( 2006-04), p. 125-127
    Abstract: This work aimed to verify the germination and speed of emergence index of passion fruit species to obtain plants suitable for grafting. The experiment was carried out in a greenhouse at Embrapa Cassava and Tropical Fruits, in Cruz das Almas, BA from January to June, 2002. It was used a completely randomized design and the treatments were constituted of five passion fruit species: Passiflora edulis Sims f. flavicarpa Deg., Passiflora edulis Sims, Passiflora giberti N.E. Brown, Passiflora laurifolia L. and Passiflora alata Curtis, with four replications. The species constitute five different groups for the variable, speed of emergence index and, concerning to the germination, two different groups, one formed by the species P. giberti and P. laurifolia and the other by the species P. edulis Sims f. flavicarpa, P. edulis Sims and P. alata. Regarding to plant height, the species P. giberti had the highest average, 40,40 cm, constituting a group that is different from the others. The species P. edulis and P. edulis f. flavicarpa presented better speed of emergence index and germination, consequently the plants obtained were ready for grafting in a shorter period of time.
    Type of Medium: Online Resource
    ISSN: 0100-2945
    URL: Article
    DOI: 10.1590/S0100-29452006000100034
    Language: Unknown
    Publisher: FapUNIFESP (SciELO)
    Publication Date: 2006
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  • 6
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    Management of slips and its effect on growth and production of 'Pérola' pineapple plants
    FapUNIFESP (SciELO) ; 2003
    In:  Revista Brasileira de Fruticultura Vol. 25, No. 2 ( 2003-08), p. 248-252
    Details
    In: Revista Brasileira de Fruticultura, FapUNIFESP (SciELO), Vol. 25, No. 2 ( 2003-08), p. 248-252
    Abstract: A escassez de mudas de boa qualidade tem limitado a expansão e contribuído para a redução da produtividade da abacaxicultura brasileira. Alternativas de manejo de mudas do tipo filhote do abacaxi cv. Pérola foram estudadas, visando a obtenção de material de plantio superior, em menor espaço de tempo, e o aproveitamento de mudas sadias de menor vigor que têm sido descartadas pelo produtor. Dois experimentos foram conduzidos no Campo Experimental da Embrapa Mandioca e Fruticultura e outro em abacaxizal comercial da região de Itaberaba, Bahia, usando-se delineamentos em blocos ou inteiramente casualizados com, pelo menos, quatro repetições. No primeiro, foi comparado o desenvolvimento de mudas do tipo filhote, de vários tamanhos iniciais (6 cm a 20 cm), durante a ceva em plantas pouco vigorosas, com aquele em viveiro, após removidas das plantas. Ficou evidente que mudas maiores crescem com mais vigor e que a sua remoção da planta-mãe atrasa o seu crescimento. No entanto, os resultados obtidos no segundo experimento mostraram que o desempenho vegetativo e agronômico das mudas enviveiradas foi similar ao dos filhotes convencionais e próximo ao de plântulas (mudas produzidas de pedaços do caule). Independentemente do tipo de material de plantio usado, mudas grandes apresentaram crescimento mais vigoroso, determinando maior produtividade das plantas. No terceiro experimento, foram avaliados os efeitos de tratamentos de adubação, controle fitossanitário e fitorreguladores de crescimento, durante a ceva de mudas do tipo filhote, sobre o seu crescimento. Os tratamentos não aceleraram significativamente o crescimento das mudas, as quais atingiram comprimento médio superior a 50 cm e peso fresco médio próximo ou superior a 300 g, aos 90 dias após a colheita dos frutos, indicando que plantas vigorosas têm reservas nutritivas suficientes para o desenvolvimento das mudas.
    Type of Medium: Online Resource
    ISSN: 0100-2945
    URL: Article
    DOI: 10.1590/S0100-29452003000200016
    Language: Unknown
    Publisher: FapUNIFESP (SciELO)
    Publication Date: 2003
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  • 7
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    Cultivos intercalares e controle de plantas daninhas em plantios de maracujá-amarelo
    FapUNIFESP (SciELO) ; 2002
    In:  Revista Brasileira de Fruticultura Vol. 24, No. 3 ( 2002-12), p. 711-713
    Details
    In: Revista Brasileira de Fruticultura, FapUNIFESP (SciELO), Vol. 24, No. 3 ( 2002-12), p. 711-713
    Abstract: This work aimed identifying crops for intercropping and integrated methods for weed control in yellow passion fruit (Passiflora edulis Sims f. flavicarpa Deg.) orchard, that will favor its production and profitability. The experiment was set up in May 1999, with the plants being conducted by a vertical support structure with one wire extended 2.0 m above the soil surface, and distributed in a spacing of 2.5 m x 5.0 m. The experimental design was in randomized blocks, with four replications and six treatments as follows: T1 - maize (Zea mays L. , cv. BR 106) as intercrop; T2 - bean (Phaseolus vulgaris L., cv. Pérola) as intercrop; T3 - pork bean (Canavalia ensiformis L.) in the interspace and hoeing in the plant lines; T4 - pork bean in the interspace and chemical weed control in the plant lines (glyphosate at 1.5 kg./ha); T5 - general chemical weed control (alachlor at 2.8 kg/ha + diuron at 1.2 kg/ha in pre-emergence and glyphosate at 1.5 kg/ha in post-emergence); T6 - control (general hoeing). Data obtained during the harvest period (May 1999 to April 2000) showed no statistical differences among treatments for yield (industry), fruit weight, length and diameter, total soluble solids and total titrable acidity. However, there was a statistical significance for total yield and yield for the fresh fruit market, with best results for bean as intercrop, giving a passion fruit yield of 12.82 t/ha. Both bean and maize should be recommended as intercrops during the first year of passion fruit cycle. The herbicides used both in pre- and post-emergence were economically viable and did not show toxic effects on the yellow passion fruit plants.
    Type of Medium: Online Resource
    ISSN: 0100-2945
    URL: Article
    DOI: 10.1590/S0100-29452002000300036
    Language: Unknown
    Publisher: FapUNIFESP (SciELO)
    Publication Date: 2002
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  • 8
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    Adubação nitrogenada para bananeira-'Terra' (Musa sp. AAB, subgrupo Terra)
    FapUNIFESP (SciELO) ; 2002
    In:  Revista Brasileira de Fruticultura Vol. 24, No. 1 ( 2002-04), p. 189-193
    Details
    In: Revista Brasileira de Fruticultura, FapUNIFESP (SciELO), Vol. 24, No. 1 ( 2002-04), p. 189-193
    Abstract: A field experiment was carried out in the South Coastal region of Bahia State, in order to define nitrogen (N) rates for maximum physical and economical efficiency, as well as the best nitrogenous fertilization, either mineral or organic, for 'Terra' banana (Musa sp. AAB, Plantain subgroup). The trial was started in May 1998, in a 4m x 2m x 3m spacing, using a microsprinkler irrigation. In a randomized blocks design with six treatments and four replications, were studied five levels of mineral nitrogen (0, 50, 200, 350 and 500 kg/ha/year), supplied as urea, and one treatment with cattle manure (267 kg/ha/year of N), as source of organic nitrogen, applied on the soil surface. Nitrogenous fertilization affected plant height, number of fruits per bunch, and fruit length and diameter in the first plant cycle (duration of 528 days, on the average). There was no significant effect of increasing rates and sources of nitrogen on yield, but the organic fertilization increased the number of fruits per bunch and the fruit length.
    Type of Medium: Online Resource
    ISSN: 0100-2945
    URL: Article
    DOI: 10.1590/S0100-29452002000100041
    Language: Unknown
    Publisher: FapUNIFESP (SciELO)
    Publication Date: 2002
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  • 9
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    Efeitos de modos de aplicação e concentrações de etefon na coloração da casa e outros atributos de qualidade do abacaxi 'Pérola'
    FapUNIFESP (SciELO) ; 2004
    In:  Revista Brasileira de Fruticultura Vol. 26, No. 2 ( 2004-08), p. 212-216
    Details
    In: Revista Brasileira de Fruticultura, FapUNIFESP (SciELO), Vol. 26, No. 2 ( 2004-08), p. 212-216
    Abstract: The increasing demands by consumers for a better fruit appearance have influenced sellers and growers to apply for the growth regulator ethephon on 'Pérola' pineapples without scientifically based knowledge, leading to negative impacts on fruits and planting material (slips). This work aimed at evaluating the effects of application methods and concentrations of ethephon on rind color and other external and internal aspects of 'Pérola' pineapples during their storage under natural conditions. Green-ripe fruits were harvested and treated in a commercial orchard in Itaberaba, Bahia, Brazil, and then transported, stored and evaluated at Embrapa Cassava & Fruits, Cruz das Almas, Bahia. In a completely randomized experimental design with a 4 x 3 +1 factorial scheme and five or more replications, were studied four concentrations of ethephon (2-chloroethilphosphonic acid) in water (500 mg L-1, 1000 mg L-1, 2000 mg L-1 and 4000 mg L-1), besides the control (0 mg L-1), and three forms of application: small jet spraying on one side of the fruit (pre-harvest); broad spraying over the fruits harvested and placed into a basket; and dip immersion of the fruit into solutions during 10 seconds, without touching the crown. Evaluations were done at four, five, seven and eleven days after harvest, on rind color and firmness, as well as on color, translucence, total soluble solids (TSS), total titratable acidity (TTA) and TSS/TTA ratio of the pulp. Ethephon treatment accelerated fruit rind yellowing, without affecting rind firmness and pulp quality. Fast dip treatment of fruits determined a more rapid and even rind yellowing than that observed for the other application forms studied. Results allowed recommending 'Pérola' pineapple fruits to be treated by fast immersion into ethephon solutions at 500 to 2.000 mg L-1.
    Type of Medium: Online Resource
    ISSN: 0100-2945
    URL: Article
    DOI: 10.1590/S0100-29452004000200008
    Language: Unknown
    Publisher: FapUNIFESP (SciELO)
    Publication Date: 2004
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  • 10
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    Doses e fontes de nitrogênio em fertirrigação no cultivo do maracujá-amarelo
    FapUNIFESP (SciELO) ; 2006
    In:  Revista Brasileira de Fruticultura Vol. 28, No. 2 ( 2006-08), p. 301-304
    Details
    In: Revista Brasileira de Fruticultura, FapUNIFESP (SciELO), Vol. 28, No. 2 ( 2006-08), p. 301-304
    Abstract: Passion fruit yield is influenced by several production factors, among them the climate, the soil and the manuring and irrigation practices. Nitrogen (N) is the most absorbed nutrient by the passion-fruit plant and has structural functions in the plant, and it can be supplied by nitric, ammoniacal and starchy sources. The experiment objective was to evaluate nitrogen sources and doses applied in fertirrigation of passion-fruit (Passiflora edulis Sims f. flavicarpa Deg.) production and fruit quality in 17 months of production in a Coastal Tableland Yellow Latosol in Bahia State, Brazil. It was studied, in randomized blocks with split-plots, two sources of N (urea and calcium nitrate), on the plots, and five N doses (0, 100, 200, 400 and 800 kg ha-1), on the split-plots with three replicas. The yellow passion-fruit was planted in a spacing of 3.00 x 1.25 m, in a total area of 1,237.50 m², and evaluated from january 2000 to january 2002. The results showed maximum yield of 34 ton ha-1, applying 457 kg of N ha-1, in urea form. Nitrogen fertilizer and sources did not interfer in the fruit characteristics and juice quality.
    Type of Medium: Online Resource
    ISSN: 0100-2945
    URL: Article
    DOI: 10.1590/S0100-29452006000200033
    Language: Unknown
    Publisher: FapUNIFESP (SciELO)
    Publication Date: 2006
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