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Agronomic study of two annual helianthus species naturalized in Argentina as potential sunflower crop genetic resource
(Universitat de Lleida, España, 2008)The genus Helianthus (Asteraceae), native from North America comprises not only the cultivated sunflower H. annuus var. macrocarpus L., but also some invasive species. The wild H. annuus ssp. annuus (common sunflower) and ... -
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 ... -
Brechas de rendimiento de girasol en Argentina
(Estación Experimental Agropecuaria Balcarce, INTA, 2020-03)Achicar las brechas en Girasol hasta lograr el 80% del rendimiento potencial en secano implicaría un ingreso adicional estimado para el país de 250 millones de dólares anuales. -
Can achene selection in sunflower crop–wild hybrids by pre-dispersal seed predators hasten the return to phenotypically wild sunflowers
(2016-04)Bird attack is a serious limitation to sunflower yield in several regions of the world, but it could also cause selection. The wild Helianthus annuus, naturalized in several regions of the world, hybridizes with the crop ... -
Caracterización genética y agronómica de la androesterilidad citoplásmica RES1 en girasol (Helianthus annuus L.) identificada en la especie silvestre H. resinosus Small.
(Facultad de Ciencias Agrarias, Universidad Nacional de Mar del Plata, 2005-11)Se propusieron los siguientes objetivos para conocer las características de la androesterilidad citoplásmica (CMS) RES1: 1) conocer la estabilidad de esta fuente y su expresión fenotípica, 2) conocer en qué estadio de la ... -
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 ... -
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 ... -
Evaluation of storage of sunflower pellets in silo bags
(University of Manitoba, Canadá, 2021-08)Silo bags are a temporary and potentially hermetic storage system widely used for grains, oil seeds, legumes and other products. Oil extraction of sunflower seeds through the extrusion expelling process generates a high ... -
Exoferality in sunflower (Helianthus annuus L.): a case study of intraspecific/interbiotype interference promoted by human activity
(2013)Helianthus annuus subsp. annuus, a biotype of the same species of the domesticated sunflower H. annuus var. macrocarpus, is an emergent noxious weed in several regions of the world. The frequent hybridization that occurs ... -
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 ... -
Habilidad competitiva del cultivo de girasol frente a las malezas.
(Estación Experimental Agropecuaria Balcarce, INTA, 2021-05)Las malezas son perjudiciales para la producción de granos por la competencia que ejercen por recursos como agua, luz y nutrientes, así como también por las interferencias que causan en la cosecha. -
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 ... -
Red Nacional de Cultivares de Girasol del INTA. Evaluación de cultivares de girasol en el sur bonaerense. Campaña 2021/22 [Conjunto de datos]
(2022)Como cada campaña, se presentan los resultados de ensayos de evaluación de cultivares de la región Sur y Este de La Pampa para determinar la adaptación de los mismos a las condiciones agroclimáticas de la región. Los ... -
Red Nacional de Cultivares de Girasol. 2023/2024 [Conjunto de datos]
(2024)Se presentan los datos correspondientes a los ensayos de girasol realizados en distintas localidades para caracterizar el comportamiento de los mismos en diferentes ambientes. Se incluyen además tablas comparativas para ... -
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 ...