Now showing items 1-10 of 10
Intercellular pectic protuberances in leaves of some Xyris species (Xyridaceae)
(Canadian Journal of Botany-revue Canadienne de Botanique, 1996-09-01) [Artigo]
Mature leaves of eight species of Xyris were prepared by standard methods for electron transmission microscopy. Wartlike intercellular pectic protuberances were observed on the surface of inner periclinal walls of epidermal ...
Leaf paraheliotropism in Styrax camporum confers increased light use efficiency and advantageous photosynthetic responses rather than photoprotection
(Environmental and Experimental Botany, 2011-04-01) [Artigo]
Styrax caporum is a native shrub from the Brazilian savanna. Most of its leaves are diaheliotropic, whereas some are paraheliotropic, mainly at noon. A previous study of this species revealed higher stomatal conductance ...
CO2 assimilation, photosynthetic light response curves, and water relations of 'Pêra' sweet orange plants infected with Xylella fastidiosa
(Brazilian Journal of Plant Physiology, 2003-08-01) [Artigo]
Plantas com clorose variegada dos citros (CVC), uma doença causada pela bactéria Xylella fastidiosa, restrita ao xilema, apresentam folhas com sintomas de deficiência hídrica, associados com diminuição na fotossíntese ...
Leaf gas exchange and yield of three upland rice cultivars
(Bragantia, 2015-03-01) [Artigo]
Studies of physiological parameters associated with crop performance and growth in different groups of upland rice (Oryza sativa L.) may support plant breeding programs. We evaluated the role of gas exchange rates and dry ...
Rooting of healthy and CVC-affected 'Valência' sweet orange stem cuttings, through the use of plant regulators
(Brazilian Archives of Biology and Technology, 2006-01-01) [Artigo]
Clorose variegada dos citros (CVC) é uma doença causada por Xylella fastidiosa, podendo determinar oclusão do xilema e desbalanço hormonal, o que por fim está relacionado ao processo de iniciação radicial em estacas. Usando ...
Anatomia de ápices radiculares de feijão cv. carioca submetidos a níveis de boro em solução nutritiva
(Scientia Agricola, 2000-09-01) [Artigo]
Foram estudadas as alterações anatômicas em ápices radiculares do feijoeiro (Phaseolus vulgaris L. cv. Carioca), quando submetidos a diferentes níveis de boro em solução nutritiva. Através de um experimento inteiramente ...
Submicroscopical features of leaves of xyris species
(Brazilian Archives of Biology and Technology, 2001-12-01) [Artigo]
The leaf infrastructure of five Xyris species were examined using scanning electron microscope (SEM), transmission electron microscope (TEM) and histochemical methods. All studied leaves show some features in epidermis and ...
Occurrence of form PIIcf sieve-element plastids in Xyris species (Xyridaceae)
(Annals of Botany, 1996-12-01) [Artigo]
Mature leaf fragments from eight species of Xyris from the Serra do Cipo, State of Minas Gerais, Brazil, were prepared by the usual methods for electron microscopy. Ultrastructural analysis of phloem shows the occurrence ...
Leaf gas exchange and fruit yield in sweet orange trees as affected by citrus variegated chlorosis and environmental conditions
(Scientia Horticulturae, 2009-09-01) [Artigo]
Citrus variegated chlorosis (CVC) is a disease caused by the bacterium Xylella fastidiosa. The most productive areas for citrus in Brazil are the northwestern and the northern regions of the São Paulo state, where CVC ...
Núcleos de Ensino da Unesp: artigos 2009
(Coleção PROGRAD (UNESP), 2011) [Livro]