Pesquisa | SciELO

Resumen La correlación entre los atributos físicos y químicos de las frutas puede servir como indi cador del momento ideal de cosecha y funcionar como criterio de selección para mejorar el manejo y la productividad de los cultivos. Este estudio tuvo como objetivo investigar las correlaciones entre las propiedades físicas y químicas de los frutos de guayaba Cortibel cultivados en el Cerrado brasileño. Los parámetros evaluados incluyeron color de cáscara y pulpa, peso, diámetro, longitud, sólidos solubles totales, acidez titulable y la relación de estas características. Los datos se analizaron mediante la correlación lineal de Pearson con un nivel de significancia de P <0,05. Varias propiedades físicas y químicas de los frutos exhi bieron correlaciones significativas. Los mayores coeficientes de correlación se observaron entre el peso y el diámetro del fruto, así como entre el ángulo de tonalidad de la cáscara y su luminosidad. Las propiedades de los frutos de guayaba Cortibel cultivados en el Cerrado brasileño exhiben correlaciones significativas. Estos hallazgos permiten la utilización de parámetros sencillos en los procesos de selección de guayaba Cortibel para objetivos de mejoramiento.

Abstract The correlation between physical and chemical attributes of fruits can serve as indicators for the ideal harvest time and function as selection criteria to enhance the management and productivity of crops. This study aimed to investigate the correlations among physical and chemical properties of Cortibel guava fruits grown in the Brazilian Cerrado. Parameters assessed included skin and pulp color, weight, diameter, length, total soluble solids, titratable acidity, and the ratio of these characteristics. Data were analyzed using Pearson's linear correlation with a significance level of P < 0.05. Several physical and chemical properties of the fruits exhibited significant correlations. The highest correlation coefficients were observed between weight and fruit diameter, as well as between hue angle of the skin and skin lightness. The properties of Cortibel guava fruits cultivated in the Brazilian Cerrado exhibit significant correlations. These findings enable the utilization of straightforward parameters in the selection processes of Cortibel guava for breeding objectives.

Calcium carbide in anticipation and standardization of ripening in Cajá-manga fruits
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Gomes, Francielly Rodrigues

; Silva, Danielle Fabíola Pereira da

; Costa, Gabriel Silva

; Souza, Pedro Henrique Magalhães de

; Silveira-Neto, Américo Nunes da

; Cruz, Simério Carlos Silva

Revista Brasileira de Fruticultura

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2023, Volume 45 elocation e-139

Resumo: En Pt | Texto: En Pt | PDF: En | PDF: Pt

Abstract Fruit ripening promoted by the exogenous application of ethylene analogs, such as calcium carbide, has commercial advantages. Thus, the knowledge of the responses of fruits treated with ethylene-inducing agents is essential to optimize the use of these substances. This work aimed to evaluate the influence of exposure to calcium carbide on the anticipation and standardization of postharvest ripening of cajá-manga fruits. Physiologically mature fruits were exposed to calcium carbide for 24 hours at concentrations 0, 20, 40, 80, and 110 g m-3. The fruits were stored at a temperature of 28±2 °C and evaluated at 0, 2, 4, and 6 days for the loss of fresh mass, color of the epidermis and pulp given by the CIELAB color space, titratable acidity, soluble solids content, the ratio between soluble solids content and titratable acidity, and vitamin C content. Cajá-manga fruits treated with different concentrations of calcium carbide had their ripening anticipated without compromising their characteristics. The concentrations of 20, 40, and 80 g m-3 of calcium carbide allowed the anticipation and standardization of fruit ripening within four days during storage, while for the highest concentration (110 g m-3), complete maturation was accelerated, occurring between two and four days of storage.

Resumo O amadurecimento de frutos promovido pela aplicação exógena de análogos de etileno, como o carbureto de cálcio, tem vantagens comerciais. Assim, o conhecimento das respostas de frutos tratados com agentes indutores de etileno é essencial para otimizar o uso dessas substâncias. Este trabalho teve como objetivo avaliar a influência da exposição ao carbureto de cálcio na antecipação e na padronização do amadurecimento pós-colheita de frutos de cajá-manga. Frutos fisiologicamente maduros foram expostos ao carbureto de cálcio nas concentrações de 0; 20; 40; 80 e 110 g m-3 por 24 horas. Os frutos foram armazenados a uma temperatura de 28±2 °C e avaliados aos 0; 2; 4 e 6 dias quanto à perda de massa fresca, cor da epiderme e polpa dada pelo espaço de cor CIELAB, acidez titulável, teor de sólidos solúveis, relação entre o teor de sólidos solúveis e a acidez titulável, e teor de vitamina C. Frutos de cajá-manga tratados com diferentes concentrações de carbureto de cálcio tiveram seu amadurecimento antecipado sem comprometer suas características. As concentrações de 20; 40 e 80 g m-3 de carbureto de cálcio permitiram a antecipação e a padronização do amadurecimento dos frutos em quatro dias, durante o armazenamento, Enquanto para a maior concentração (110 g m-3), a maturação completa foi acelerada, ocorrendo entre dois e quatro dias de armazenamento.

https://doi.org/10.1590/0100-29452023139

Evaluation of purple passion fruit grafted onto a fusarium wilt-tolerant rootstock
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Lopez, Maria Camila

; Hurtado-Salazar, Alejandro

; Ocampo, John

; Silva, Danielle Fabíola Pereira da

; Ceballos-Aguirre, Nelson

Pesquisa Agropecuária Brasileira

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2023, Volume 58 elocation e03011

Resumo: En Pt | Texto: En Pt | PDF: En | PDF: Pt

Abstract The objective of this work was to evaluate the vegetative growth, yield, fruit quality, and survival of purple passion fruit grafted onto a rootstock tolerant to fusarium wilt in an area with a history of this disease. The treatments were the combination of three elite accessions of purple passion fruit (PutEdu01, TesEdu11, and a commercial accession as the control) and three rootstocks (ungrafted, autografted, and grafted onto Passiflora maliformis). TesEdu11 grafted onto P. maliformis shows the highest estimated yield at 307 days after transplanting in areas with fusarium wilt incidence.

Resumo O objetivo deste trabalho foi avaliar o desenvolvimento vegetativo, a produção, a qualidade do fruto e a sobrevivência do maracujá-roxo enxertado em um porta-enxerto tolerante à fusariose, em uma área com histórico de ocorrência da doença. Os tratamentos foram combinações de três acessos elite de maracujá-roxo (PutEdu01, TesEdu11 e um acesso comercial como controle) e três porta-enxertos (pé-franco, autoenxerto e enxerto em Passiflora maliformis). TesEdu11 enxertada em P. maliformis apresenta a maior produção estimada aos 307 dias após transplante em áreas com incidência de fusariose.

https://doi.org/10.1590/s1678-3921.pab2023.v58.03011

Fruit quality and genetic diversity of Spondias dulcis accessions
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Souza, Pedro Henrique Magalhães de

; Monteiro, Victoria Azevedo

; Rodrigues, Cláudia Dayane Marques

; Gomes, Francielly Rodrigues

; Oliveira, João Alison Alves

; Silva, Danielle Fabíola Pereira da

Revista Ceres

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Abr 2022, Volume 69 Nº 2 Páginas 180 - 186

Resumo: En | Texto: En | PDF: En

ABSTRACT Among the less exploited Brazilian native fruit trees, the Spondias dulcis (cajá-manga) has many uses, being their fruits appreciated in fresh consumption and its pulp used in popsicles, ice-creams, and jellies production. However, there is a lack of research on this species, being necessary more studies. This work aimed to characterize the physical and chemical quality and the genetic diversity of Spondias dulcis fruits harvested in different accessions in the municipality of Jataí - GO. The experiment was carried out in a completely randomized design with six treatments (accessions), ten replications with ten fruits per plot, totaling a sample of 600 fruits. The fruits were evaluated for pulp and peel color, pulp yield, soluble solids content, titratable acidity, soluble solids content/titratable acidity ratio, and vitamin C content. The fruits from accessions M4 and M5 presented physical and chemical characteristics higher than the other plants. The evaluated accessions presented genetic variability, being the methodology employed efficiently to indicate this variability, in which the accession M2 was the most divergent.

https://doi.org/10.1590/0034-737x202269020008

Morphology of seeds and seedlings, and substrates in germination of Citrus limetta
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Ragagnin, Angelita Lorrayne Soares Lima

; Rodrigues, Cláudia Dayane Marques

; Costa, Gabriel Silva

; Silva, Givanildo Zildo da

; Machado, Carla Gomes

; Cruz, Simério Carlos da Silva

; Silva, Danielle Fabíola Pereira da

Ciência Rural

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2022, Volume 52 Nº 8 elocation e20210377

Resumo: Pt En | Texto: Pt En | PDF: Pt | PDF: En

RESUMO: Objetivou-se com o presente trabalho estudar a morfologia de sementes e plântulas, além de se obter informações sobre o tipo e tempo da germinação das sementes de limão-doce em cinco substratos (em papel mata-borrão, entre papel mata-borrão, em areia esterilizada lavada, entre areia esterilizada lavada e em rolo de papel). Sementes de C. limetta foram mensuradas suas dimensões e realizada a descrição externa. Posteriomente, semeadas entre areia e mantidas à 25 ºC para acompanhamento da germinação e descrição morfologica das plântulas resultantes. Um segundo experimento foi avaliado quanto a eficiência dos substratos: rolo de papel, sobre e entre papel, sobre e entre areia na germinação de sementes de C. limetta. Foram avaliados o índice de velocidade, o tempo médio e a frequência relativa da germinação. Além disso, foi estabelecida a data da primeira e última contagem da germinação. As médias dos tratamentos foram comparadas pelo teste de Tukey a 5% de probabilidade. As sementes de C. limetta são ovoides, levemente enrugadas e poliembrionicas. A germinação é hipógea, criptocotiledonar ou fanerocotiledonar. As plântulas apresentam eofilos coriáceos com folhas simples, formato elíptico ou próximo do elíptico, tendendo para ovado. Apresenta sistema radicular pivotante coloração de amarelo a creme com presença de raízes secundárias. O tempo médio de germinação é entre 18 e 22 dias. O substrato indicado para germinação das sementes é sobre papel.

ABSTRACT: This research studied the morphology of seeds and seedlings, in addition to obtaining information about the type and time of germination of sweet lemon seeds in five substrates (on blotting paper, between blotting paper, on washed sterilized sand, between washed sterilized sand and in paper roll). C. limetta seeds were measured, and external description was performed. Afterwards, sown in the sand and kept at 25 ºC to monitoring germination and morphological description of the resulting seedlings. A second experiment was evaluated for substrate efficiency: paper roll, on and between paper, on and between sand in the germination of C. limetta seeds. Speed index, average time and relative frequency of germination were evaluated. In addition, date of the first and last germination count was established. Treatment averages were compared using the Tukey test at 5% probability. C. limetta seeds are ovoid, slightly wrinkled and polyembryonic. Germination is hypogeal, cryptocotylar or phanerocotylar. The seedlings have leathery eophylls with simple leaves, elliptical shape or close to the elliptical, tending to ovate. It has a pivoting root system that is colored yellow to cream with the presence of secondary roots. The average germination time is between 18 and 22 days. The substrate indicated for seed germination is on paper.

https://doi.org/10.1590/0103-8478cr20210377

Brazilian Thoracic Association Consensus on Sleep-disordered Breathing
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Duarte, Ricardo Luiz de Menezes

; Togeiro, Sonia Maria Guimarães Pereira

; Palombini, Luciana de Oliveira

; Rizzatti, Fabíola Paula Galhardo

; Fagondes, Simone Chaves

; Magalhães-da-Silveira, Flavio José

; Cabral, Marília Montenegro

; Genta, Pedro Rodrigues

; Lorenzi-Filho, Geraldo

; Clímaco, Danielle Cristina Silva

; Drager, Luciano Ferreira

; Codeço, Vitor Martins

; Viegas, Carlos Alberto de Assis

; Rabahi, Marcelo Fouad

Jornal Brasileiro de Pneumologia

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2022, Volume 48 Nº 4 elocation e20220106

Resumo: Pt En | Texto: Pt En | PDF: Pt | PDF: En

RESUMO O sono é essencial para o adequado funcionamento de todos os indivíduos. Os distúrbios respiratórios do sono ocorrem em todas as faixas etárias, constituindo motivo frequente de consulta médica. O objetivo deste consenso foi atualizar os conhecimentos sobre os principais distúrbios respiratórios do sono tanto na população adulta quanto na pediátrica, com ênfase na apneia obstrutiva do sono. A apneia obstrutiva do sono é uma doença extremamente prevalente, porém frequentemente subdiagnosticada. Associa-se frequentemente a uma série de comorbidades, notadamente cardiovasculares, metabólicas e neurocognitivas, que impactam significativamente na qualidade de vida e na mortalidade. Por conta disso, o Departamento de Distúrbios Respiratórios do Sono da Sociedade Brasileira de Pneumologia e Tisiologia reuniu 14 especialistas com reconhecida e comprovada experiência em distúrbios respiratórios do sono para a elaboração deste documento.

ABSTRACT Sleep is essential for the proper functioning of all individuals. Sleep-disordered breathing can occur at any age and is a common reason for medical visits. The objective of this consensus is to update knowledge about the main causes of sleep-disordered breathing in adult and pediatric populations, with an emphasis on obstructive sleep apnea. Obstructive sleep apnea is an extremely prevalent but often underdiagnosed disease. It is often accompanied by comorbidities, notably cardiovascular, metabolic, and neurocognitive disorders, which have a significant impact on quality of life and mortality rates. Therefore, to create this consensus, the Sleep-Disordered Breathing Department of the Brazilian Thoracic Association brought together 14 experts with recognized, proven experience in sleep-disordered breathing.

https://doi.org/10.36416/1806-3756/e20220106

Recommendations for evaluation and diagnosis of extra-glandular manifestations of primary sjogren syndrome: results of an epidemiologic systematic review/ meta-analysis and a consensus guideline from the Brazilian Society of Rheumatology (articular, pulmonary and renal)
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Trevisani, Virginia Fernandes Moça

; Pugliesi, Alisson

; Pasoto, Sandra Gofinet

; Lopes, Maria Lucia Lemos

; Guedes, Lissiane Karine Noronha

; Miyamoto, Samira Tatiyama

; Fernandes, Marilena Leal Mesquita Silvestre

; Fialho, Sonia Cristina de Magalhães Souza

; Pinheiro, Aysa César

; Santos, Laura Caldas dos

; Appenzeller, Simone

; Fidelix, Tania

; Ribeiro, Sandra Lúcia Euzébio

; Brito, Danielle Christinne Soares Egypto de

; Libório-Kimura, Tatiana Nayara

; Santos, Maria Carmen Lopes Ferreira Silva

; Cantali, Diego Ustárroz

; Gennari, Juliana D’Agostino

; Civile, Vinicius Tassoni

; Pinto, Ana Carolina Pereira Nunes

; Rocha-Filho, César Ramos

; Oliveira, Fabiola Reis

; Rocha, Aline Pereira da

; Valim, Valeria

Advances in Rheumatology

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2022, Volume 62 elocation 18

Resumo: En | Texto: En | PDF: En

Abstract Sjogren’s Syndrome (SS) is an autoimmune disease characterized by lymphocytic infiltration of the exocrine glands and other organs, associated with sicca syndrome but also with systemic involvement with varying degrees of severity. Despite their importance, these systemic manifestations are not routinely evaluated and there is no homogenous approach to their diagnosis or evaluation. To close this gap, a panel of experts from the Brazilian Society of Rheumatology conducted a systematic review and meta-analysis on the identification of epidemiologic and clinical features of these manifestations and made recommendations based on the findings. Agreement between the experts was achieved using the Delphi method. The first part of this guideline summarizes the most important topics, and 11 recommendations are provided for the articular, pulmonary, and renal care of SS patients.

https://doi.org/10.1186/s42358-022-00248-1

Evaluation of production and fruit quality of a yellow passion fruit cultivar infected with the cowpea aphid-borne mosaic virus
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Gomes, Francielly Rodrigues

; Silva, Danielle Fabíola Pereira da

; Rodrigues, Cláudia Dayane Marques

; Salazar, Alejandro Hurtado

; Assunção, Hildeu Ferreira

; Cruz, Simério Carlos Silva

Revista Brasileira de Fruticultura

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2022, Volume 44 Nº 3 elocation e-259

Resumo: Pt En | Texto: Pt En | PDF: Pt | PDF: En

Resumo Este trabalho teve como objetivo caracterizar e avaliar as correlações entre as características do fruto e da polpa de uma cultivar comercial de maracujá-amarelo (FB 200) infectada com o cowpea aphid-borne mosaic virus (CABMV). A infecção natural foi constatada após o início da floração. Os parâmetros peso, comprimento, diâmetro, espessura da casca, rendimento de polpa, teor de sólidos solúveis, acidez titulável e relação de sólidos solúveis/acidez titulável foram avaliados. Adotou-se o delineamento de blocos inteiramente casualizados composto por 20 parcelas, com cinco repetições. Os dados foram submetidos a análises descritivas à correlação de Pearson a 1 e 5% de significância. O CABMV diminuiu a qualidade e as características físicas dos frutos, mas estes ainda podem ser destinados às indústrias de processamento de sucos. Correlações positivas significativas foram observadas entre muitos parâmetros avaliados.

Abstract This work aimed to characterize and evaluate the correlations between fruit and pulp characteristics of a commercial cultivar of yellow passion fruit (FB 200) infected with the cowpea aphid-borne mosaic virus (CABMV). The observation of natural infection occurred after the beginning of flowering. The parameters weight, length, and diameter, peel thickness, pulp yield, soluble solids content, titratable acidity, and the soluble solids content/titratable acidity ratio were evaluated. A completely randomized block design composed of 20 plots with five replications was adopted. The data were subject to descriptive analyses and Pearson’s Correlation at 1 and 5% of significance. CABMV has decreased the quality and physical characteristics of fruits, but they still could be destined for juice processing industries. Many parameters of the fruits presented significant positive correlations.

https://doi.org/10.1590/0100-29452022259

Economic and quality study of purple passion fruit grafted on a fusarium wilt tolerant rootstock
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Lopez, Camila

; Salazar, Alejandro Hurtado

; Ocampo, John

; Silva, Danielle Fabiola Pereira da

; Ceballos, Nelson Aguirre

Bragantia

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2022, Volume 81 elocation e3522

Resumo: En | Texto: En | PDF: En

ABSTRACT The aim of this work was to determine the influence of Passiflora maliformis as rootstock on the physical characteristics of fruits, productivity, and profitability of the purple passion fruit. The study was carried out from May 2020 to April 2021, under a 3 × 3 factorial design distributed in blocks with three repetitions. The treatments were represented by three scions of elite accessions of purple passion fruit PutEdu01, TesEdu11 and a commercial scion, and three rootstocks, ungrafted, autografted and P. maliformis. Conventional cleft grafting was used. The fresh fruit mass, the shell weight, the pulp weight, the fruit diameter, the polar diameter of the fruit, the percentage of pulp and skin were evaluated. As economic variables, production costs, income, and their cost benefit ratio were determined. The quality of the fruits derived from the grafted accessions in P. maliformis was within the fresh marketing standards, presenting a pulp yield of more than 50%. The combinations of the purple passion fruit TesEdu11 accessions and the commercial one grafted onto P. maliformis as the elite accession PutEdu01 without grafting were financially attractive because they presented a cost-benefit ratio greater than one at two years after starting the crop.

https://doi.org/10.1590/1678-4499.20220055

10.

Recommendations for evaluation and diagnosis of extra-glandular manifestations of primary Sjögren syndrome: results of an epidemiologic systematic review/ meta-analysis and a consensus guideline from the Brazilian society of rheumatology (hepatic, gastrointestinal and pancreatic)
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Trevisani, Virginia Fernandes Moça

; Pinheiro, Aysa César

; Fialho, Sonia Cristina de Magalhães Souza

; Fernandes, Marilena Leal Mesquita Silvestre

; Pugliesi, Alisson

; Pasoto, Sandra Gofinet

; Lopes, Maria Lucia Lemos

; Guedes, Lissiane Karine Noronha

; Miyamoto, Samira Tatiyama

; Santos, Laura Caldas dos

; Appenzeller, Simone

; Fidelix, Tania

; Ribeiro, Sandra Lúcia Euzébio

; Brito, Danielle Christinne Soares Egypto de

; Libório-Kimura, Tatiana Nayara

; Santos, Maria Carmen Lopes Ferreira Silva

; Cantali, Diego Ustárroz

; Gennari, Juliana D.’Agostino

; Capobianco, Karina Gatz

; Civile, Vinicius Tassoni

; Pinto, Ana Carolina Pereira Nunes

; Rocha, Aline Pereira da

; Rocha Filho, César Ramos

; Oliveira, Fabiola Reis

; Valim, Valeria

Advances in Rheumatology

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2022, Volume 62 elocation 35

Resumo: En | Texto: En | PDF: En

Abstract Sjogren's syndrome (SS) is an autoimmune disease characterized by lymphocytic infiltration of the exocrine glands and other organs, associated with sicca syndrome but also with systemic involvement with varying degrees of severity. Despite their importance, some systemic manifestations, mainly liver, gastrointestinal, and pancreatic are not routinely evaluated. To address these manifestations, the Sjögren's Syndrome Committee of the Brazilian Society of Rheumatology conducted a broad systematic review of the literature on studies investigating prevalence and diagnosis of these symptoms in Sjogren´s patients and made recommendations based on the findings. Agreement between the experts was achieved using the Delphi method. This is the second part of this guideline, providing 6 recommendations for liver, gastrointestinal, and pancreatic care of SS patients.

https://doi.org/10.1186/s42358-022-00267-y

11.

Morphological characterization of fruits, endocarp, seed and seedlings of cajá-manga (Spondias dulcis)
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Souza, Pedro Henrique Magalhães de

; Gomes, Francielly Rodrigues

; Silva, Givanildo Zildo da

; Rocha, Diego Ismael

; Cruz, Simério Carlos Silva

; Silva, Danielle Fabíola Pereira da

Revista Ceres

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Jun 2021, Volume 68 Nº 3 Páginas 239 - 244

Resumo: En | Texto: En | PDF: En

ABSTRACT The Cerrado biome has several species that can generate income, and the cajá-manga is one of these native species with great potential but with scarce information about its morphological characterization. Thus, this work aimed to characterize the fruit, endocarp, seeds, and seedlings of cajá-manga morphologically. The fruits were evaluated by the characteristics of the length, width, and diameter of the fruit, endocarp, and seeds, the number of loculi, and the weight of fruits and endocarp. The plantlets were evaluated for the number of seedlings per endocarp, number of leaflets, number of leaflets of the 3rd and 4th leaves, stem diameter, length of the shoot and root, root and shoot dry matter and data analyzed by descriptive analysis. The morphometric characteristics of the fruits, endocarp, and seeds were analyzed using the Scott-Knott test. The morphological characteristics of the fruits, the endocarps, the seeds, and the plantlets of cajá-manga varied within the mother plants. These results can be used as a basis for future selection of plants with desirable characteristics on breeding programs.

https://doi.org/10.1590/0034-737x202168030010 165 downloads

12.

Evaluation of postharvest properties in different passion fruit species during ripening
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GOMES, FRANCIELLY RODRIGUES

; BARBOSA, MOAB ACACIO

; RODRIGUES, CLÁUDIA DAYANE MARQUES

; HURTADO-SALAZAR, ALEJANDRO

; SILVEIRA-NETO, AMÉRICO NUNES DA

; ASSUNÇÃO, HILDEU FERREIRA DA

; SILVA, DANIELLE FABÍOLA PEREIRA DA

Revista Colombiana de Ciencias Hortícolas

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Abr 2021, Volume 15 Nº 1 elocation e11948

Resumo: En Es | Texto: En Es | PDF: En | PDF: Es

ABSTRACT During ripening, many transformations occur in passion fruits. The ripening stage affects fruit quality and post-harvest properties. Fruits with 65% yellow epidermis present chemical characteristics that meet industrial standards, facilitating harvest estimations and loss avoidance. Thus, this study aimed to evaluate the post-harvest properties of passion fruit species (genotypes of the yellow passion fruit and sweet passion fruit, and yellow passion fruit cultivar FB 200) during ripening. The fruits were evaluated by the color of the epidermis and the chemical characteristics of the pulp (titratable acidity, vitamin C, carotenoids, soluble solids content, and ratio). This experiment was conducted with a completely randomized design and a split-plot arrangement, where the plots were the species and the subplots were the evaluation periods (50, 58, 66, 74 and 82 days after anthesis), with four replications and 10 fruits per plot. The yellow passion fruit genotype and cultivar, harvested at 82 days after anthesis, presented desirable characteristics for the juice industry and for fresh consumption. The sweet passion fruit had a higher soluble solids content and titratable acidity ratio because of its high content of soluble solids and low acidity, which translate to a better fruit flavor.

RESUMEN Durante la maduración del maracuyá, se producen muchas transformaciones. La etapa de maduración afecta a la calidad de la fruta y a las propiedades poscosecha. Se sabe que los frutos con un 65% de epidermis amarilla presentan características químicas dentro del estándar requerido por la industria, lo que permite anticipar la cosecha y evitar pérdidas. Así, este trabajo tuvo como objetivo evaluar las propiedades postcosecha de especies de fruta de la pasión (amarilla, dulce y el cv. FB 200) durante la maduración. Los frutos fueron evaluados por el color de la epidermis y las características químicas de la pulpa (acidez titulable, vitamina C, carotenoides, sólidos solubles y proporción). El experimento se realizó en un diseño completamente al azar con un arreglo de parcelas subdivididas, donde las parcelas constituyen las especies y las subparcelas constituyen los períodos de evaluación (50, 58, 66, 74 y 82 días después de la antesis), con cuatro repeticiones y 10 frutos por parcela. Los frutos del genotipo de maracuyá amarilla y el cultivar cosechados 82 días después de la antesis presentan características deseables ya sea para la industria del jugo o para consumo fresco. La fruta de la pasión dulce presenta una mayor proporción entre sólidos solubles y acidez titulable, debido a su alto contenido en sólidos solubles y bajo contenido de acidez, lo que implica un gran sabor a fruta.

https://doi.org/10.17584/rcch.2021v15i1.11948

13.

ADVANCING NITROGEN FERTILIZATION OF CORN USING Brachiaria ruziziensis AS COVER CROP
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OLIVEIRA, THIAGO PINHEIRO DE

; BRAZ, MAGNO GONSALVES

; SMANIOTTO, ALEX OLIVEIRA

; SILVA, DANIELLE FABÍOLA PEREIRA DA

; CRUZ, SIMÉRIO CARLOS SILVA

Revista Caatinga

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Jan 2021, Volume 34 Nº 1 Páginas 9 - 19

Resumo: Pt En | Texto: Pt En | PDF: Pt | PDF: En

RESUMO A antecipação da aplicação de nitrogênio em sistemas de cultivo, usando plantas de cobertura, apresenta-se como alternativa para melhorar a eficiência do uso desse nutriente e otimizar a questão operacional. Objetivou-se com este trabalho, avaliar a eficiência da antecipação da adubação nitrogenada para a cultura do milho, tendo a braquiária como cultura de cobertura. O experimento foi conduzido na área experimental da Universidade Federal de Jataí, em Jataí - GO, com histórico de plantio em sucessão soja-milho/sorgo nos últimos 20 anos, e destaque para o teor de matéria orgânica do solo que é de 39,5 g kg-1. Utilizou-se delineamento de blocos ao acaso, com fatorial 5x2+1, com 4 repetições, sendo cinco doses de N: 0; 50; 100; 150 e 200 kg ha-1 e duas épocas de aplicação na cultura da braquiária, sendo a época 1: aplicação do nitrogênio 90 dias pré-semeadura do milho e época 2: aplicação do nitrogênio 60 dias pré-semeadura do milho e um tratamento adicional com adubação nitrogenada convencional de 150 kg ha-1 de nitrogênio, aplicada na cultura do milho, dividida em adubação de plantio e cobertura. Com exceção a dose de 200 kg ha-1 de N aplicada 90 dias antes da semeadura do milho, a antecipação da adubação nitrogenada para esta cultura, utilizando a braquiária como planta de cobertura, se mostrou tão eficiente quando a adubação convencional nas condições de solo e clima em que foi realizado o trabalho, ou seja, solo com alto teor de matéria orgânica, fertilidade construída e ausência de restrição hídrica.

ABSTRACT Advancing nitrogen (N) application in cropping systems, using cover crops, is an alternative to improve the efficiency of use of this nutrient and to optimize the operational issue. The aim of this study was to evaluate the efficiency of advancing N fertilization for corn crop, with Brachiaria ruziziensis as cover crop. The experiment was conducted at the experimental field of the Federal University of Jataí / Regional Unit of Jataí, GO, Brazil, with history of soybean-corn/sorghum succession in the last 20 years and a high organic matter content in the soil, which reaches 39.5 g kg-1. A randomized complete block design was used in a 5x2 + 1 factorial scheme with 4 replicates, corresponding to five N doses: 0; 50; 100; 150 and 200 kg ha-1 and two times of application in B. ruziziensis: Time 1 - N application 90 days before planting of corn, and Time 2 - N application 60 days before planting, plus an additional treatment with conventional N fertilization, 150 kg ha-1 of N, not advanced, applied to the corn crop, split into planting fertilization and top -dressing fertilization. Except for the N dose of 200 kg ha-1 applied 90 days before corn sowing, advancing N fertilization for this crop using B. ruziziensis as cover plant proved to be as efficient as conventional fertilization for the soil and climate conditions under which the study was carried out, that is, soil with high content of organic matter, built fertility and absence of water restriction.

https://doi.org/10.1590/1983-21252021v34n102rc 231 downloads

14.

Clonal selection in S0 and S1 peach trees evaluated in a subtropical environment
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Silva, José Osmar da Costa e

; Bruckner, Claudio Horst

; Carneiro, Pedro Crescêncio Souza

; Resende, Marcos Deon Vilela de

; Alves, Rodrigo Silva

; Ribeiro, Mariana Rodrigues

; Silva, Danielle Fabíola Pereira da

Crop Breeding and Applied Biotechnology

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2021, Volume 21 Nº 1 elocation e33012111

Resumo: En | Texto: En | PDF: En

Abstract The aims of this study were to estimate genetic parameters, predict genotypic values, and analyze the genotypic divergence in S0 and S1 peach trees evaluated in a subtropical environment by the mixed model methodology. For this, twenty-two clones were evaluated for plant and fruit traits. Genotypic variance among clones was significant. The individual broad-sense heritabilities ranged from 0.11 to 0.84, and the individual repeatability coefficients ranged from 0.15 to 0.89. The genotypic coefficients of variation were higher than 10% for most of the traits. Clustering based on plant and fruit traits led to the formation of two and five mutually exclusive groups, respectively. Multivariate analysis of principal components indicated that some traits could be excluded from genetic evaluation. Considering the yield trait and the selection of five clones, predicted gain from selection was 70%, which shows the possibility of considerable genetic progress from clonal selection in peach trees.

https://doi.org/10.1590/1984-70332021v21n1a1 345 downloads

15.

Cytokinin induces the development of gabirobeira root cuttings
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Souza, Lasara Kamila Ferreira de

; Hurtado-Salazar, Alejandro

; Gomes, Francielly Rodrigues

; Pereira, Laísse Danielle

; Rocha, Diego Ismael

; Silva, Danielle Fabíola Pereira da

Ciência Rural

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2021, Volume 51 Nº 6 elocation e20200074

Resumo: Pt En | Texto: Pt En | PDF: Pt | PDF: En

RESUMO: A gabirobeira é uma espécie nativa do Cerrado brasileiro com potencial para uso em sistemas de cultivo. O objetivo deste estudo foi avaliar o efeito da 6-benzilaminopurina (BAP) em estacas radiculares de progênies de Gabirobeira (Campomanesia adamantium). As estacas radiculares foram obtidas de progênies de Gabirobeira de um e dois anos de idade. Estes foram segmentados em 5 cm de comprimento e apresentavam entre 1,90 a 3,22 mm de diâmetro, imersos nas concentrações: 0.0; 1.0; 2.0 e 4.0 mg L-1 de BAP por 15 segundos e plantados em bandejas contendo Bioplant®. O delineamento experimental foi o inteiramente casualizado, em esquema fatorial 2x4 (idades das estacas x concentrações de BAP), com quinze repetições por tratamento. Após 140 dias, foram avaliados o número de estacas com brotações, número de brotações, número de folhas e diâmetro da raiz principal. Estacas de raízes de progênies de dois anos de idade apresentaram melhor desenvolvimento. Menores concentrações de citocinina trouxeram melhores resultados de emissão e número de brotações das progênies de ambas as idades.

ABSTRACT: The gabirobeira is a species native to the Brazilian Cerrado with potential for use in cropping systems. This study evaluated the effect of the cytokinin 6-benzylaminopurine (BAP) on root cuttings of gabirobeira (Campomanesia adamantium). The plant material was obtained from gabirobeira progenies of one and two-years-old. The cuttings were segmented in 5 cm length and 1.90 to 3.22 mm diameter, immersed in the following BAP concentrations: 0.0; 1.0; 2.0 and 4.0 mg L-1 for 15 seconds and planted in trays containing the substrate Bioplant®. A complete randomized experimental design was adopted in a factorial scheme 2x4, (cuttings age x BAP concentrations) with fifteen replicates per treatment. After 140 days the number of cuttings with shoots, number of shoots, number of leaves, and diameter of the main root were evaluated. The better development of the cuttings was observed on progenies of two-years-old. The lowest cytokinin concentrations promoted the better emission and number of shoots of the progenies from both ages.

https://doi.org/10.1590/0103-8478cr20200074 401 downloads

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