Temas
Mostrando ítems 1-20 de 32
-
13C‐labeling shows the effect of hierarchy on the carbon gain of individuals and functional groups in dense field stands
(Ecological Society of America, 2012-01)Measurements of resource capture by individuals, species, or functional groups coexisting in field stands improve our ability to investigate the ecophysiological basis of plant competition. But methodological and technical ... -
A comparison of methods for excluding light from stems to evaluate stem photosynthesis
(Wiley, 2023-09)Premise: A comparison of methods using different materials to exclude light from stems to prevent stem CO2 exchange (i.e., photosynthesis), without affecting stem conductance to water vapor, surface temperature, and relative ... -
A functional–structural plant model that simulates whole- canopy gas exchange of grapevine plants (Vitis vinifera L.) under different training systems
(Oxford University Press, 2020-09)Background and Aims: Scaling from single-leaf to whole-canopy photosynthesis faces several complexities related to variations in light interception and leaf properties. To evaluate the impact of canopy strucuture on gas ... -
Aristotelia chilensis: berry nativo del bosque Andinopatagónico y su respuesta fotosintética bajo condiciones lumínicas contrastantes
(Red Argentina de Ciencia y Tecnología Forestal, 2023-03)El maqui (Aristotelia chilensis [Mol.] Stunz) es una especie nativa de los bosques Andino Patagónicos de Argentina y Chile (Fredes et al., 2012; Vogel et al., 2014), que produce bayas comestibles con los niveles más altos ... -
Artificial selection for grain yield has increased net CO2 exchange of the ear leaf in maize crops
(Oxford University Press, 2021-03)Identifying the physiological traits indirectly selected during the search for high-yielding maize hybrids is useful for guiding further improvements. To investigate such traits, in this study we focused on the critical ... -
Breeding effects on canopy light attenuation in maize: a retrospective and prospective analysis
(Oxford University Press, 2022-03)The light attenuation process within a plant canopy defines energy capture and vertical distribution of light and nitrogen (N). The vertical light distribution can be quantitatively described with the extinction coefficient ... -
Do light and alfalfa responses to cloth and slatted shade represent those measured under an agroforestry system?
(Springer Nature, 2011-02)Shade cloth is commonly used in agroforestry research. It produces a continuous, uniform reduced light environment. Shade cloth and a slatted structure were compared in relation to the inability to represent the light ... -
Efecto de la roya del álamo sobre el crecimiento del año y del rebrote de la siguiente temporada en tres clones con distinta susceptibilidad y arquitectura del canopeo
(Facultad de Agronomía, Universidad de Buenos Aires, 2014-04-29)El cultivo de álamos en el Delta del Paraná, la tercera cuenca de importancia forestal de Argentina, es una actividad económica relevante que provee materia prima para las industrias del aserrado, debobinado, tableros de ... -
Efecto la disponibilidad de nitrógeno sobre el impacto de la roya en la fisiología y crecimiento del álamo.
(2014-03-18)Melampsora medusae es considerada una de las enfermedades principales en el cultivo de Populus deltoides. Los daños que provoca son la defoliación anticipada, susceptibilidad a otros factores de estrés, pérdida en la ... -
Eficiencia fotoquímica máxima e índice de potencial fotosintético en plantas de melón (Cucumis melo) tratadas con bajas temperaturas
(Universidad Nacional del Litoral. Facultad de Ciencias Veterinarias, 2014)La fluorescencia de la clorofila se utiliza para determinar la eficiencia fotoquímica de las plantas ante diferentes condiciones ambientales. Existen índices como Fv/Fm y PI abs que son indicadores indirectos del rendimiento ... -
An empirical model that uses light attenuation and plant nitrogen status to predict within-canopy N distribution and upscale photosynthesis from leaf to whole canopy
(2015-10-03)Modelling the spatial and temporal distribution of leaf nitrogen (N) is central to specify photosynthetic parameters and simulate canopy photosynthesis. Leaf photosynthetic parameters depend on both local light availability and ... -
Evaluación de Procesos Fisiológicos Involucrados en la Fotosíntesis Bajo Condiciones de Estrés Térmico e Hídrico en Soja
(Red Raíces de Ecofisiología MINCyT y el Área Estratégica de Ecofisiología del INTA, 2017-09-28)Actualmente se discute si el estrés térmico (ET) o el estrés hídrico (EH) limitan la fotosíntesis en los cultivos debido al cierre de estomas, a cambios metabólicos o a la combinación de ambos factores (Chaitanya et al., ... -
Field and genetic evidence support the photosynthetic performance index (PIABS) as an indicator of rice grain yield
(Elsevier, 2023-07)The rice breeding process for grain yield could be effectively enhanced by developing efficient tools that accelerate plant selection through the rapid determination of reliable predictors. In this study, we have described ... -
Grapevine morphological shade acclimation is mediated by light quality whereas hydraulic shade acclimation is mediated by light intensity
(Elsevier, 2021-06)Plants acclimate to shade by sensing light signals such as low photosynthetic active radiation (PAR), low blue light (BL) levels and low red-to-far red ratios (R:FR) trough plant photoreceptors cross talk. We previously ... -
Interaction of light and water stress on the ecophysiological response of Nothofagus antarctica (G. Forster) Oerst.
(Instituto de Ciências Agrárias e Ambientais Mediterrânicas da Universidade de Évora, 2014-09-30)Nothofagus antarctica (G. Forster) Oerst. (ñire) occupies a latitudinal gradient ranged from 36° 30´ to 56° 00’ S, and extends from sea level to 2,000 m a.s.l. It is the species with widest ecological amplitude in Nothofagus ... -
Influencia de un complejo viral en rendimiento y contenido de clorofila de dos variedades de batata
(Facultad de Ciencias Agrarias, Universidad Nacional del Litoral, 2022-02-11)Las virosis son la principal limitante del rendimiento de batata, quinto cultivo alimenticio del mundo. En Argentina, el “encrespamiento amarillo” (EA), complejo viral con siete agentes involucrados, causa notables pérdidas ... -
Leaf Photosynthesis and Senescence in Heated and Droughted Field-grown Soybean with Contrasting Seed Protein Concentration
(Elsevier, 2021-06-06)Soybean plants under heat and drought generate a multiplicity of responses in photosynthesis and senescence, impairing growth, yield, and seed quality. The goal of this study was to analyze and quantify independent and ... -
Mechanisms underlying photosynthetic acclimation to high temperature are different between Vitis vinifera cv. Syrah and Grenache
(CSIRO Publishing, 2020-12-07)Photosynthesis acclimation to high temperature differs among and within species. Grapevine intra-specific variation in photosynthetic acclimation to elevated temperature has been scarcely assessed. Our objectives were ... -
Mesophyll conductance modulates photosynthetic rate in cotton crops exposed to heat stress under field conditions
(Wiley, 2021-08)Cotton is often exposed to high temperatures during the reproductive stage, which can negatively affect its productivity. The objectives were to: i) test whether heat stress impacts during the reproductive stage on ... -
New insight into how thigmomorphogenesis affects Epipremnum aureum plant development
(2018-09)Climbing Epipremnum aureum plants develop larger leaves than unsupported, hanging plants. This effect may be regarded, in part, as a thigmomorphogenic response, but gravimorphogenetic effect may also be involved, since ...