43 research outputs found
Maize open-pollinated populations physiological improvement: validating tools for drought response participatory selection
Participatory selection—exploiting specific adaptation traits to target environments—helps
to guarantees yield stability in a changing climate, in particular under low-input or organic production.
The purpose of the present study was to identify reliable, low-cost, fast and easy-to-use tools to
complement traditional selection for an e ective participatory improvement of maize populations
for drought resistance/tolerance. The morphological and eco-physiological responses to progressive
water deprivation of four maize open-pollinated populations were assessed in both controlled and
field conditions. Thermography and Chl a fluorescence, validated by gas exchange indicated that the
best performing populations under water-deficit conditions were ‘Fandango’ and to a less extent
‘Pigarro’ (both from participatory breeding). These populations showed high yield potential under
optimal and reduced watering. Under moderate water stress, ‘Bilhó’, originating from an altitude of
800 m, is one of the most resilient populations. The experiments under chamber conditions confirmed
the existence of genetic variability within ‘Pigarro’ and ‘Fandango’ for drought response relevant for
future populations breeding. Based on the easiness to score and population discriminatory power,
the performance index (PIABS) emerges as an integrative phenotyping tool to use as a refinement of
the common participatory maize selection especially under moderate water deprivationinfo:eu-repo/semantics/publishedVersio
The geomorphic dimension global change : risks and opportunities
Fil: Hurtado, MartÃn Adolfo. Instituto de GeomorfologÃa y Suelos (IGS). Facultad de Ciencias Naturales y Museo. Universidad Nacional de La Plata; ArgentinaFil: Forte, Luis M.. Instituto de GeomorfologÃa y Suelos (IGS). Facultad de Ciencias Naturales y Museo. Universidad Nacional de La Plata; ArgentinaFil: Bruschi, Viola MarÃa. Departamento de Ciencias de la Tierra y FÃsica de la Materia Condensada. Universidad de Cantabria; EspañaFil: Bonachea, Jaime. Departamento de Ciencias de la Tierra y FÃsica de la Materia Condensada. Universidad de Cantabria; EspañaFil: Rivas, Victoria. DGUOT. Universidad de Cantabria. Santander; EspañaFil: Gómez Arozamena, José. DCMQ. Universidad de Cantabria. Santander; EspañaFil: Dantas Ferreira, Marcilene. Departamento de Engenharia Civil. Universidade Federal de SÆo Carlos. SÆo Paulo; BrasilFil: Remondo, Juan. Departamento de Ciencias de la Tierra y FÃsica de la Materia Condensada. Universidad de Cantabria; EspañaFil: González, A.. Departamento de Ciencias de la Tierra y FÃsica de la Materia Condensada. Universidad de Cantabria; EspañaFil: DÃaz de Terán, J.R.. Departamento de Ciencias de la Tierra y FÃsica de la Materia Condensada. Universidad de Cantabria; EspañaFil: Salas, L.. Departamento de Ciencias de la Tierra y FÃsica de la Materia Condensada. Universidad de Cantabria; EspañaFil: Cendrero, Antonio. Instituto de GeomorfologÃa y Suelos (IGS). Facultad de Ciencias Naturales y Museo. Universidad Nacional de La Plata; Argentin
Denudation and geomorphic change in the Anthropocene; a global overview
The effects of human activity on geomorphic processes, particularly those related to denudation/sedimentation, are investigated by reviewing case studies and global assessments covering the past few centuries. Evidence we have assembled from different parts of the world, as well as from the literature, show that certain geomorphic processes are experiencing an acceleration, especially since the mid-twentieth century. This suggests that a global geomorphic change is taking place, largely caused by anthropogenic landscape changes
Spain
This chapter presents a review of the situation concerning the various geomorphological hazards in the country, including some information about existing programmes for research, control and mitigation. With its great variety of climatic, geological and morphodynamic environments, Spain is subject to every kind of natural hazard: tsunamis, floods, volcanism, and mass movements. The whole of the territory is prone to some kind of geomorphological hazard but it is in the eastern and southern coastal strips that the risks are greatest. One of the main problems for the mitigation of geomorphological hazards in Spain is the lack of an appropriate regulatory framework for the incorporation of natural hazard assessments into land-use planning and management at the macro-, meso- and micro-planning levels. The coverage of hazard mapping is still far from complete or adequate, and much work remains to be done. There has been considerable diversity in the methods used for risk assessment and for the cartographic representation of natural hazards. An urgent need is to establish common, accepted methodologies and criteria, based on indicators defined as clearly as possible, and to standardize map legends and scales for different planning levels. Information programmes for the general public also need to be considerably expanded
Riesgos geológicos en España: estado de la cuestión
Trabajo presentado en el III Congreso geológico de España y VIII Congreso Latinoamericano de GeologÃa, celebrado en Salamanca (España), en 1992Peer reviewe
Effect of heat and moisture exchangers on the prevention of ventilator-associated pneumonia in critically ill patients
General Symposia - G07 Geomorphology - "Landscape Sensitivity" - 32nd International Geological Congress - Florence - Italy, August 20-28, 2004
Si tratta del volume di atti della sessione "Landscape sensitivity" tenutasi in occasione del Congresso Internazionale di Geologia di Firenze 2004
Preface [Introduzione al volume di atti relativo alla sessione Landscape sensitivity]
Si tratta dell'introduzione al volume di atti relativo alla sessione "Landscape sensitivity" tenutasi in occasione del Congresso Internazionale di Geologia di Firenze 2004