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Boron and calcium sprayed on 'Fuyu' persimmon tree prevent skin cracks, groove and browning of fruit during cold storage Ciência Rural
Ferri,Valdecir Carlos; Rombaldi,Cesar Valmor; Silva,Jorge Adolfo; Pegoraro,Camila; Nora,Leonardo; Antunes,Pedro Luiz; Girardi,Cesar Luiz; Tibola,Casiane Salete.
Flesh softening, skin browning and rotting are chief problems during cold storage (CS) of 'Fuyu' Persimmon. We studied the effects of boron (B) and calcium (Ca) sprayed on the trees during three consecutive years, on the development of skin cracks, grooves and browning in persimmon fruit under CS in Farroupilha, RS, Brazil (29°31' south, 51°21' west, about 750 m altitude). A homogeneous orchard area of 0.5 ha was delimitated and three sets of five plants for each treatment were randomly selected. The persimmon trees were sprayed at a 20 day interval, from 15th January until harvest, for three consecutive years, with: T1) water; T2) calcium nitrate at 0.5% (m/v); T3) calcium chloride at 0.5% (m/v); and T4) boron at 0.3% (m/v). The fruit were harvest with...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Diospyrus kaki; Postharvest injuries; Micronutrients; Macronutrients.
Ano: 2008 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782008000800009
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Dealing with iron metabolism in rice: from breeding for stress tolerance to biofortification Genet. Mol. Biol.
Santos,Railson Schreinert dos; Araujo Júnior,Artur Teixeira de; Pegoraro,Camila; Oliveira,Antonio Costa de.
Abstract Iron is a well-known metal. Used by humankind since ancient times in many different ways, this element is present in all living organisms, where, unfortunately, it represents a two-way problem. Being an essential block in the composition of different proteins and metabolic pathways, iron is a vital component for animals and plants. That is why iron deficiency has a severe impact on the lives of different organisms, including humans, becoming a major concern, especially in developing countries where access to adequate nutrition is still difficult. On the other hand, this metal is also capable of causing damage when present in excess, becoming toxic to cells and affecting the whole organism. Because of its importance, iron absorption, transport and...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Iron toxicity; Mineral malnutrition; Fe-enrichment; Quantitative Trait Loci.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572017000200312
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Efeito de danos mecânicos, da redução de temperatura e 1-MCP no metabolismo pós-colheita de brócolis Legacy Ciênc. Tecnol. Aliment.
Zaicovski,Cristiane Brauer; Pegoraro,Camila; Ferrarezze,Jocleita Peruzzo; Dal Cero,Joceani; Lund,Daniela Guerra; Rombaldi,Cesar Valmor.
O etileno acelera o metabolismo pós-colheita de brócolis, e sua síntese é induzida por danos mecânicos e pelo aumento da temperatura. Para testar esta hipótese, foram realizados 03 experimentos. No primeiro, avaliou-se o efeito do dano mecânico na produção do etileno; no segundo, estudou-se o efeito do armazenamento refrigerado; e, no terceiro, o efeito do 1-MCP no metabolismo e conservação de brócolis. Os resultados mostraram que o dano mecânico aumenta significativamente a produção do etileno, passando de 0,25 a 501,83 mL.h-1 g-1, duas horas após a aplicação do tratamento. Já, no tratamento controle, os incrementos foram menores, passando de 0,27 para 203,13 mL.h-1 g-1. Durante o armazenamento, observou-se que a deterioração ocorreu mais rapidamente no...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Coloração; Clorofilas; Amarelecimento; Clorofilases; Etileno.
Ano: 2008 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612008000400012
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Effects of hypoxia storage on gene transcript accumulation during tomato fruit ripening Braz. J. Plant Physiol.
Pegoraro,Camila; Santos,Railson Schreinert dos; Krüger,Mariana Madruga; Tiecher,Aline; Maia,Luciano Carlos da; Rombaldi,Cesar Valmor; Oliveira,Antonio Costa de.
Tomato (Solanum lycopersicum L.) is a climacteric fruit, i.e., during ripening an increase in ethylene synthesis and high rate of respiration are observed. Low oxygen levels might inhibit or block ethylene biosynthesis and therefore retard the ripening process. Despite commercial applications of low oxygen treatments, the precise mode of action of low oxygen in fruit tissues and ripening is not well understood. In order to delineate the molecular responses to low oxygen stress in fruits, hypoxia-responsive tomato genes encoding heat shock factors, heat shock proteins, and enzymes involved in fermentation and ethylene synthesis pathways were analyzed. In this study, tomato fruit stored under hypoxia conditions showed that HSP17.7 and HSP21 genes were highly...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Gene expression; Heat shock proteins; Solanum lycopersicum.
Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202012000200007
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Rice genotypes for drought tolerance: morphological and transcriptional evaluation of auxin-related genes Bragantia
Madabula,Frederico Pedro; Santos,Railson Schreinert dos; Machado,Nata; Pegoraro,Camila; Kruger,Mariana Madruga; Maia,Luciano Carlos da; Sousa,Rogerio Oliveira de; Oliveira,Antonio Costa de.
ABSTRACT Drought stress affects crop quality and productivity. The challenge of increasing food availability for a growing worldwide demand relies on the development of tolerant cultivars that will need to be adapted to arid and semi-arid areas. In order to help the understanding of rice response to stress, the phenotypic response of 6 Brazilian rice cultivars and 2 different crosses between them were characterized under drought conditions. Since gene regulation is an important part of root morphological responses to stressful conditions, 4 genes related to auxin response and root modifications (OsGNOM1 CRL4, OsIAA1, OsCAND1 and OsRAA1) were evaluated. The expression of these genes was analyzed in stressed rice using public available microarray data and...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Oryza sativ; RT-qPCR; Root; Abiotic stress.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052016000400428
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Similaridade genética entre cultivares de marmeleiro avaliadas por marcadores AFLP PAB
Manica‑Berto,Roberta; Pegoraro,Camila; Mistura,Claudete Clarice; Bresolin,Adriana Pires Soares; Rufato,Andrea De Rossi; Fachinello,José Carlos.
O objetivo deste trabalho foi determinar as relações genéticas de 21 cultivares de marmeleiro com base no marcador "amplified fragment length polymorphism" (AFLP), para melhoramento e conservação de recursos genéticos da espécie na região sul do Rio Grande do Sul. O DNA das cultivares foi extraído pelo método CTAB, e as reações de AFLP foram realizadas com os iniciadores EcoRI/MseI. Foram identificados dois grupos entre as 21 cultivares de marmeleiro, um com quatro e outro com sete cultivares geneticamente mais relacionadas. As cultivares de marmeleiro apresentam alta variabilidade genética, com máximo de 43% de similaridade.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Cydonia oblonga; Divergência; Germoplasma de marmeleiro.
Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2013000500015
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Uni- and multivariate methods applied to the study of the adaptability and stability of white oat PAB
Rother,Vianei; Verdi,Cezar Augusto; Thurow,Liamara Bahr; Carvalho,Ivan Ricardo; Oliveira,Victoria Freitas de; Maia,Luciano Carlos da; Venske,Eduardo; Pegoraro,Camila; Oliveira,Antonio Costa de.
Abstract: The objective of this work was to compare uni- and multivariate biometric methods to evaluate the adaptability and stability of an important group of white oat (Avena sativa) cultivars grown in Southern Brazil. The used experimental design was a randomized complete block, in a factorial arrangement of 12 environments x 7 cultivars, with three replicates. The analysis of variance and the methods of Eberhart & Russel, Annicchiarico, and the harmonic mean of the relative performance of predicted genetic values (MHPRVG) were assessed. In the general comparison of the methods, the 'UPFA Gaudéria' and 'URS Guapa' genotypes were more stable regarding grain yield. The 'UPFA Gaudéria' and 'URS-21' genotypes stood out for hectoliter weight, presenting...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Avena sativa; Environment; Genotype; Plant breeding.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2019000102805
Registros recuperados: 7
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