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	Provedor de dados Braz. J. Plant Physiol. (3) Autor Dias,Ana S. (3) Lidon,Fernando C. (3) Ramalho,José C. (2) Bagulho,Ana S. (1) Palavra-chave Triticum turgidum subsp. durum (3) Triticum aestivum L. (2) Grain quality (1) Grain weight (1) Heat stress (1) High temperature (1) Net photosynthesis (1) Nutrients (1) Nutrients uptake and translocation (1) Stomatal conductance (1) Translocation (1) Triticum aestivum (1) Uptake (1) Mais... Tipo do documento Info:eu-repo/semantics/article (3) Ano 2009 (2) 2008 (1) País Brazil (3) Idioma Inglês (3)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 3 Primeira ... 1 ... Última I. Heat stress in Triticum: kinetics of Ca and Mg accumulation Braz. J. Plant Physiol. Dias,Ana S.; Lidon,Fernando C.; Ramalho,José C.. In heat stressed genotypes of Triticum aestivum L. (Sever and Golia) and Triticum turgidum subsp. durum (Acalou and TE 9306), chosen according to its genetic background diversity, Ca and Mg accumulations were correlated with its photosynthetic performance. It was found that with high temperatures the concentrations of Ca increased in the shoots, whereas the accumulation of Mg augmented only in bread wheat genotypes. Under heat stress, the pattern of electrolytes release in Golia and Acalou remained similar, but the extrusion rates became higher in Sever. During grain filling, the levels of total chlorophylls decreased in the heat stressed genotypes (excepting in Sever). In all the Triticum genotypes, stomatal conductance and the net carboxilation rate... Tipo: Info:eu-repo/semantics/article Palavras-chave: Triticum aestivum L.; Triticum turgidum subsp. durum; Net photosynthesis; Nutrients uptake and translocation; Stomatal conductance. Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202009000200005 IV.Heat stress in Triticum: kinetics of Fe and Mn accumulation Braz. J. Plant Physiol. Dias,Ana S.; Lidon,Fernando C.; Ramalho,José C.. The interactions between Fe/Mn accumulation and the photosynthetic light reactions were investigated in heat stressed bread and durum wheat genotypes (Triticum aestivum L. and Triticum turgidum subsp.durum). Four genotypes were chosen according to its genetic background diversity. Plants were grown in a greenhouse at two different day/night temperatures regimes (control - 25/14ºC and heat stress - 31/20ºC), during the grain filling phase. The contents and uptake/translocation of Fe and Mn were evaluated on booting, grain filling and maturity and correlated with chlorophyll a fluorescence parameters. It was found that, under heat stress, the concentrations of Fe in the culm and leaves diminished in bread wheat, but increased in durum wheat. An opposite... Tipo: Info:eu-repo/semantics/article Palavras-chave: Heat stress; Nutrients; Translocation; Triticum aestivum L.; Triticum turgidum subsp. durum; Uptake. Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202009000200008 Ultrastructure and biochemical traits of bread and durum wheat grains under heat stress Braz. J. Plant Physiol. Dias,Ana S.; Bagulho,Ana S.; Lidon,Fernando C.. The yield and grain quality (as well as technological traits) of two heat-stressed genotypes of bread (Triticum aestivum L.) and durum wheat (Triticum turgidum subsp. durum) having different tolerance to high temperatures after anthesis were investigated. Heat stress, during grain filling, triggered grain shrinkage with a reduced weight and ultrastructural changes in the aleurone layer and in the endosperm cells. Heat stress also decreased the sedimentation index SDS, an effect associated with increased protein content in the grain but with decreased levels of essential amino acids. Although the responses to heat stress were similar among the Triticum genotypes, it is further suggested that during grain filling, high temperatures might affect gluten... Tipo: Info:eu-repo/semantics/article Palavras-chave: Grain weight; Grain quality; High temperature; Triticum aestivum; Triticum turgidum subsp. durum. Ano: 2008 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202008000400008 Registros recuperados: 3 Primeira ... 1 ... Última

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