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Sucrose and nitrogen supplies regulate growth of maize kernels
(Academic Press Ltd, 1999-12-01)
The growth of maize (Zea mays L.) kernels depends on the availability of carbon (C) and nitrogen (N) assimilates supplied by the mother plant and the capacity of the kernel to use them. Our objectives were to study the ...
Analysis of gene expression profiles under water stress in tolerant and sensitive sugarcane plants
(Elsevier B.V., 2009-02-01)
Water stress decreases plant productivity. To detect genes expressed under drought conditions, we performed a gene expression study using drought tolerant (SP83-5073) and sensitive (SP90-1638) sugarcane plants. Gene ...
Cold-induced enhancement of avian uncoupling protein expression, heat production, and triiodothyronine concentrations in broiler chicks
(Elsevier B.V., 2003-01-01)
The relationships among avian uncoupling protein (avUCP) mRNA expression, heat production, and thyroid hormone metabolism were investigated in 7-14-day-old broiler chicks (Gallus gallus) exposed to a low temperature ...
Corn and soybean meal metabolizable energy with the addition of exogenous enzymes for poultry
(Fundação APINCO de Ciência e Tecnologia Avícolas, 2009-03-01)
Two metabolism assays were carried out to determine corn and soybean meal metabolizable energy when enzymes were added. In the first trial, 35 cockerels per studied feedstuff (corn and soybean meal) were distributed in a ...
Adubação nitrogenada em cobertura no girassol irrigado nas condições de Cassilândia-MS
(Universidade Federal de Lavras (UFLA), 2008-09-01)
Nitrogen is the most required nutrient by plants for exerting important functions in the vegetable metabolism. In sunflower crop, its efficiency causes nutritional disorder, being the nutrient that most limits the yield. ...
Carbon-13 turnover in 'roxo de valinhos' fig trees
(Soc Brasileira Fruticultura, 2011-06-01)
The aim of this study was to assess carbon-13 turnover in different organs of the fig tree, 'Roxo de Valinhos' cultivar. The experiment was carried out in an orchard at School of Agronomical Sciences, FCA/UNESP, Botucatu ...
Growth Regulation and Other Secondary Effects of Herbicides
(Weed Sci Soc Amer, 2010-07-01)
As all herbicides act on pathways or processes crucial to plants, in an inhibitory or stimulatory way, low doses of any herbicide might be used to beneficially modulate plant growth, development, or composition. Glyphosate, ...
Diagnosis of Smith-Lemli-Opitz syndrome by ultraviolet spectrophotometry
(Associação Brasileira de Divulgação Científica (ABRADIC), 2003-10-01)
Smith-Lemli-Opitz syndrome (SLOS) is an autosomal recessive disorder due to an inborn error of cholesterol metabolism, characterized by congenital malformations, dysmorphism of multiple organs, mental retardation and delayed ...
Genotoxicity of Brosimum gaudichaudii measured by the Salmonella/microsome assay and chromosomal aberrations in CHO cells
(Elsevier B.V., 2002-07-01)
The root bark of Brosimum gaudichaudii Trecul (Moraceae) is popularly used for treatment of vitiligo. In the present study the mutagenic activity of the aqueous and methanolic extract as well as of the n-butanolic fraction ...
Mutagenic and cytotoxic effect of planifolin: A naphthopyranone dimer isolated from Paepalanthus planifolius
(Elsevier B.V., 2006-08-01)
A naphthopyranone dimer, named planifolin, was isolated from a methylene chloride extract of the capitula of Paepalanthus planifolius Koern. The molecule (C31H26O10) appeared to be made up of two monomeric portions, ...