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24-Epibrassinolide mechanisms regulating blossom-end rot development in tomato fruit. Repositório Alice
RIBOLDI, L. B.; GAZIOLA, S. A.; AZEVEDO, R. A.; FREITAS, S. T. de; CASTRO, P. R. de C. e.
Blossom-end rot (BER) is a physiological disorder believed to be triggered by low Ca2+ content in the distal fruit tissue. However, many other factors can also determine fruit susceptibility to BER. It is possible that during fruit growth, Ca2+ imbalance can increase membrane leakiness, which may trigger the accumulation of reactive oxygen species, leading to cell death. Brassinosteroids are a class of plant hormones involved in stress defenses, specially increasing the activity of antioxidant enzymes and the accumulation of antioxidant compounds, such as ascorbic acid. The objective of this study was to understand the mechanisms by which 24-epibrassinolide (EBL) reduces fruit susceptibility to BER. Tomato plants ?BRS Montese? were cultivated in a...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: 24-Epibrassinolide; BRS Montese; Blossom-End Rot; Podridão da extremidade da flor; Brassinosteróides; Deficiência de cálcio; Estresse oxidativo; Tomate; Doença; Tomatoes.
Ano: 2019 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1113189
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Stomatal conductance of maize under water and nitrogen deficits Repositório Alice
MEDICI, L.O.; AZEVEDO, R. A.; CANELLAS, L.P.; MACHADO, A.T.; PIMENTEL, C..
The objective of this work was to evaluate the effect of drought and nitrogen (N) stresses on stomatal conductance of three maize cultivars grown in the field. The stomatal conductance of Sol da Manhã variety (BRS 4157) and Pioneer 6875 hybrid, under drought and high N, was lower than under drought and low N, which indicates drought tolerance, since these cultivars did not exhibit reduction in grain yield by drought, as observed for Amarelão variety, which flowered under more severe drought. 'Sol da Manhã' exhibited shorter anthesis-silking interval under high N than under low N, an additional indication of tolerance.
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Zea mays; Drought tolerance; Anthesis-silking interval; Tolerância à seca; Sincronia de florescimento.
Ano: 2007 URL: http://www.alice.cnptia.embrapa.br/handle/doc/126171
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