Temas
Mostrando ítems 1-17 de 17
-
An architectural analysis of the elongation of field-grown sunflower root systems. Elements for modelling the effects of temperature and intercepted radiation
(Society for Experimental Biology, 1996-03)The effects of photosynthetic photon flux density (PPFD) and soil temperature on root system elongation rate have been analysed by using an architectural framework. Root elongation rate was analysed by considering three ... -
Assessment of nitrogen diagnosis methods in sunflower
(American Society of Agronomy; Estados Unidos, 2021-04-20)Nitrogen deficiency can severely limit sunflower (Helianthus annuus L.) grain yield and quality. Our objective was to evaluate N diagnosis methods based on: (a) pre-plant soil nitrate-nitrogen (NO3––N) test (PPSNT) and ... -
Daños ocasionados por el gorgojo Listroderes foveatus (Coleoptera: Curculionidae) en cultivos de girasol del sudeste de Buenos Aires (Argentina)
(Sociedad Entomológica Argentina, 2022-04-01)El cultivo del girasol es afectado por insectos plaga en sus diferentes estadios de desarrollo vegetativo. Entre estos, se encuentra un complejo coleópteros del género Listroderes Schoenhere conocidos vulgarmente como ... -
Detection of Plasmopara halstedii in sunflower seeds: A case study using molecular testing.
(Elsevier, 2021-05-06)Plasmopara halstedii (Farl.) Berl. & De Toni causing downy mildew of sunflower is responsible for considerable economic losses worldwide. Because P. halstedii can be seed-transmitted, monitoring of seeds for pathogen ... -
Development of the enhanced halsey model to predict equilibrium moisture content (EMC) of sunflower seeds with different oil contents
(American Society of Agricultural and Biological Engineers, 2018-05)Using the right equilibrium moisture content (EMC) relationship is critical for implementing successful aeration strategies and for determining the safe storage moisture content of grains and oilseeds. The oil content of ... -
Does nitrogen fertilization rate, timing and splitting affect sunflower yield and grain quality?
(Wiley, 2023-02)Nitrogen (N) deficiency could have a negative effect on sunflower (Helianthus annuus L.) yield and grain quality. Therefore, it is necessary to adjust the optimum rate, timing, and frequency of N fertilization to improve ... -
Effect of oil content of sunflower seeds on the equilibrium moisture relationship and the safe storage condition
(International Commission of Agricultural and Biosystems Engineering, 2015-06)The adsorption and desorption equilibrium moisture content/equilibrium relative humidity relationships of sunflower seeds with four different oil contents (35.7%, 44.6%, 48.6% and 52.7%) were obtained for temperatures of ... -
Genetic variability for leaf growth rate and duration under water deficit in sunflower: analysis of responses at cell, organ, and plant level
(Oxford Academic Press, 2008-05)Plants under water deficit reduce leaf growth, thereby reducing transpiration rate at the expense of reduced photosynthesis. The objective of this work was to analyse the response of leaf growth to water deficit in several ... -
Genomic relationships between hexaploid Helianthus resinosus and diploid Helianthus annuus (Asteraceae)
(Springer, 2014-05)Genus Helianthus comprises diploid and polyploid species. An autoallopolyploid origin has been proposed for hexaploid species but the genomic relationships remain unclear. Mitotic and meiotic studies in annual Helianthus ... -
Impacto de las enfermedades foliares sobre variables fisiológicas determinantes del rendimiento del girasol ante diferentes situaciones de cultivo
(Gerencia de Comunicación e Imagen Institucional, DNA SICC, INTA, 2018-12)La mancha de la hoja por Alternaria (ALT) y la mancha negra del tallo por Phoma (MNT) son enfermedades foliares endémicas del girasol en Argentina. MNT disminuye regularmente el rendimiento del girasol de alto potencial ... -
Increases in the source to sink ratio related to a higher carbohydrate concentration reduce phoma black stem in sunflower
(Springer Netherlands, 2018-03)Phoma black stem (BS), caused by Leptosphaeria lindquistii (synonymous Phoma macdonaldii Boerema) is an endemic disease of sunflower in Argentina and occurs worldwide. The expression of some diseases is related to the ... -
Methods to determine nitrogen in sunflower grains
(Asociación Argentina de la Ciencia del Suelo, 2021-12)In sunflower, grain oil concentration (OG) determines oil industrial yield and protein concentration (PG) determines the protein of by-products as pellets and meals (PM). There are various methodologies to quantify total ... -
Nivel de daño económico de Armadillidium vulgare (Latreille, 1804) (Crustacea: Isopoda) en el cultivo de girasol
(Gerencia de Comunicación e Imagen Institucional, DNA SICC, INTA, 2014-08)La función de daño es el parámetro fundamental del modelo de Nivel de Daño Económico (NDE). Los objetivos fueron: evaluar los perjuicios de Armadillidium vulgare en el cultivo de girasol y determinar la función de daño en ... -
Ranges of Vigor Based on the Electrical Conductivity Test in Dehulled Sunflower Seeds
(Academic Journals, 2015)Electrical Conductivity (EC) is a promising vigor test since it produces fast laboratory results. In sunflower, the leakage of electrolytes from the pericarp may interfere with exudates from embryo tissues. The aims of ... -
Rewatering Plants after a Long Water-deficit Treatment Reveals that Leaf Epidermal Cells Retain their Ability to Expand after the Leaf has Apparently Reached its Final Size
(Oxford Academic Press, 2008-05)Background and Aims: Leaves expand during a given period of time until they reach their final size and form, which is called determinate growth. Duration of leaf expansion is stable when expressed in thermal-time and in ... -
Temperature effect on triacylglycerol species in seed oil from high stearic sunflower lines with different genetic backgrounds.
(John Wiley & Sons, 2016-10)BACKGROUND: This study characterized the influence of temperature during grain filling on the saturated fatty acid distribution in triacylglycerol molecules from high stearic sunflower lines with different genetic backgrounds. ... -
Temperature influence during seed filling on tocopherol concentration in a traditional sunflower hybrid
(Instituto de la Grasa, CSIC, 2007)Se investigó el efecto de la temperatura durante períodos cortos en el llenado de las semillas sobre la concentración de tocoferoles y la relación tocoferoles/ácido linoleico en un híbrido tradicional de girasol. Se realizó ...