Temas
Mostrando ítems 1-20 de 30
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A comparison of five methods to assess embolism resistance in trees
(Elsevier, 2020-04)Vulnerability to drought-induced embolism is a key trait that shapes drought resistance and that could be increasingly used to design climate-smart forest management guidelines and to anticipate the outcome of climate ... -
Adaptability to climate change in forestry species : drought effects on growth and wood anatomy of ponderosa pines growing at different competition levels
(2012)More stressful conditions are expected due to climatic change in several regions, including Patagonia, South-America. In this region, there are no studies about the impact of severe drought events on growth and wood ... -
Analyse rétrospective de l’adaptation à la sécheresse chez le douglas
(Swiss Forestry Society and Allen Press, 2012-03)For a number of years in certain regions of France the Douglas-fir trees (Pseudotsuga menziesii [Mirb.] Franco) have presented symptoms of withering which have been attributed to drought. Our results show that the hydraulic ... -
Assessment of resistance to xylem cavitation in cordilleran cypress using near-infrared spectroscopy
(Elsevier, 2020-04)Characterizing drought resistance of forest trees is an important aim in the worldwide context of increasing forest decline and dieback. Furthermore, wood demand is increasing all around the world, urging the need for the ... -
Caracterización de genotipos de Gossypium hirsutum L. sobre su tolerancia a estrés hídrico
(2018-04)El déficit hídrico y la alta demanda atmosférica en climas subhúmedos limita la productividad de los cultivos, la selección de variedades tolerantes es una estrategia para minimizar el impacto. El objetivo fue caracterizar ... -
Caracterización de poblaciones de alfalfa por tolerancia a sequía
(EEA Manfredi, INTA, 2021-04-27)El déficit hídrico (DH) es el estrés abiótico que afecta en mayor medida a la producción vegetal. Este factor se torna de vital importancia frente al cambio climático global que sugiere que el riesgo de sequía crecerá en ... -
Caracterización molecular de cinco poblaciones de mapeo F2 en girasol cultivado (Helianthus annuus var. Macrocarpus (DC) Cockrell) segregantes para tolerancia a estrés hídrico mediante marcadores microsatélites
(2018-12-10)Argentina es el cuarto productor de aceite de girasol (Helianthus annuus var. macrocarpus (DC) Cockerell) a nivel mundial. Sin embargo, debido al creciente desarrollo de los cultivos extensivos, el desplazamiento del cultivo ... -
Clinal variation along precipitation gradients in Patagonian temperate forests: unravelling demographic and selection signatures in three Nothofagus spp.
(Springer Nature, 2020-01-10)Past demographic changes and current selection pressures determine the genetic variation displayed by Nothofagus species along rainfall gradients. Based on the diversity trends observed at candidate genes associated to ... -
Differential water-use strategies and drought resistance in Trichloris crinita plants from contrasting aridity origins
(2013-08)In arid environments, water availability is the main limiting factor for primary production, and it is expected that not only drought-resistance, but also plant strategies for soil water use will be under natural selection. ... -
Drought tolerance phenotyping in sunflower inbred lines (Helianthus annuus var. macrocarpus (DC) Cockerell)
(2018-11-11)Sunflower (Helianthus annuus var. macrocarpus) is the fourth most important sources of vegetable oil in the world and the second most important in Argentina. In the last years, the crop moved to marginal areas due to ... -
Drought tolerance screening under controlled conditions predicts ranking of water‐limited yield of field‐grown soybean genotypes
(Wiley, 2015-04)Drought is a major limitation to crop yields worldwide. Screening for soybean yield under water deficit is often a bottleneck in breeding programmes. We assessed the validity of a standardized drought tolerance screening ... -
Eficiencia transpiratoria como atributo de tolerancia al déficit hídrico en soja (Glycine max (L) Merril) : variabilidad intraespecífica y su asociación con la estabilidad del rendimiento
(Facultad de Agronomía, Universidad de Buenos Aires, 2011-12)Las principales zonas sojeras en el mundo están expuestas a situaciones de déficit hídrico (DH) que ocasionan importantes pérdidas de rendimiento. La eficiencia transpiratoria (ET) ha sido propuesta como criterio de selección ... -
Fertilización en estaqueros de álamos: supervivencia, crecimiento y tolerancia a la sequía de las estacas provenientes de cepas fertilizadas
(Ministerio de Agroindustria. Unidad para el Cambio Rural, UCAR., 2016)Los nutrientes que más limitan la productividad en sitios forestales y que son extraídos en mayor magnitud son el nitrógeno (N) y el fósforo (P). En Argentina son escasos los conocimientos sobre la respuesta a la ... -
Genetic control of the tree-ring response of Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) to the 2003 drought and heat-wave in France
(Springer, 2008)The genetic control of tree ring growth in Douglas-fir in response to the drought and heat-wave that occurred in 2003 in Europe was studied with microdensity profiles in three clonal experiments located in three different ... -
Genetic variation of xylem hydraulic properties shows that wood density is involved in adaptation to drought in Douglas-fir (Pseudotsuga menziesii (Mirb.))
(Springer, 2011-05)Relationships between wood density and hydraulic efficiency and safety (hydraulic specific conductivity and vulnerability to cavitation, respectively) could clarify the physiological process explaining the impact of density ... -
Genome-wide association analysis of agronomical and physiological traits linked to drought tolerance in a diverse potatoes (Solanum tuberosum) panel
(Wiley-Blackwell Publishing, 2021-06-12)Potatoes is often considered a drought-sensitive crop and its sustainable production is threatened due to frequent drought episodes. Drought tolerance is a complex trait of increasing importance in potatoes therefore its ... -
Growth response of Pinus contorta to the synergy of stress factors: successive extreme drought events and a population outbreak of Sirex noctilio in NW Patagonia
(Springer, 2022-02)The synergy of biotic and abiotic stress factors influences the response in growth, resistance, recovery and resilience of forest systems. This study used a dendrochronological approach to analyze the annual radial increase ... -
New insights into wood anatomy and function relationships: how Eucalyptus challenges what we already know
(Elsevier, 2019-12-15)Multispecies surveys have shown that there is a weak but significant trade-off between xylem efficiency and safety in woody species, with no species maximizing both attributes at the same time. Relationships between xylem ... -
Nitric oxide and abscisic acid regulate osmoprotective and antioxidative mechanisms related to water stress tolerance of grapevines
(Wiley, 2021-03)Background and Aims: Exogenously applied nitric oxide (NO) and abscisic acid (ABA) are known to improve the tolerance of plants to abiotic stress. The effects of NO and ABA applications on physiological and metabolic ... -
Obtención de plantas de papa sobrexpresantes de la aspartil proteasa StAP3 para incrementar la tolerancia a sequía
(Secretaria de Ciencia y Tecnología, Universidad Nacional de Mar del Plata, 2020-10)Una de las consecuencias del cambio climático es el estrés generado por la disminución de disponibilidad de agua (Leakey et al., 2009). La planta de papa, que representa una de las fuentes alimenticias más importantes para ...