Variabilidad en el indumento de Phaseolus vulgaris var. aborigineus (Fabaceae)

The indument of Phaseolus vulgaris L. var. aborigineus (Burkart) Baudet, a native bean from Argentina, potential source for improvement of cultivated varieties, was compared between different genetic lines. Seeds collected from wild, weedy forms and presumptive hybrid individuals in two distant latitudes were sown in two sites of Buenos Aires University Campus (field and greenhouse). Two type of trichomes were found, which differenciate in length and shape. The pubescence density was significantly different between wild specimens from different latitudes and between culture sites for plants of a same procedence. This character could be involved in physical defences of these plants.El indumento de Phaseolus vulgaris L. var. aborigineus (Burkart) Baudet, un poroto nativo de la Argentina, potencial fuente para mejoramiento de variedades cultivadas, se comparó entre diferentes líneas genéticas. Semillas de individuos silvestres, tipos maleza y presuntos híbridos colectadas en dos latitudes distantes fueron sembradas en dos sitios del campus de la Universidad de Buenos Aires (campo e invernáculo). Se encontraron dos tipos de tricomas que se diferencian en longitud y forma. La densidad de la pubescencia fue significativamente distinta entre especímenes silvestres de distintas latitudes y entre sitios de cultivo para plantas de la misma procedencia; este carácter podría estar relacionado con las defensas físicas de estas plantas.Fil: Ojeda, Fabiana S.. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Biodiversidad y Biología ExperimentalFil: Amela García, María T.. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Biodiversidad y Biología ExperimentalFil: Hoc, Patricia S.. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Biodiversidad y Biología Experimenta

Variabilidad en el indumento de Phaseolus vulgaris var. aborigineus (Fabaceae)

The indument of Phaseolus vulgaris L. var. aborigineus (Burkart) Baudet, a native bean from Argentina, potential source for improvement of cultivated varieties, was compared between different genetic lines. Seeds collected from wild, weedy forms and presumptive hybrid individuals in two distant latitudes were sown in two sites of Buenos Aires University Campus (field and greenhouse). Two type of trichomes were found, which differenciate in length and shape. The pubescence density was significantly different between wild specimens from different latitudes and between culture sites for plants of a same procedence. This character could be involved in physical defences of these plants.The indument of Phaseolus vulgaris L. var. aborigineus (Burkart) Baudet, a native bean from Argentina, potential source for improvement of cultivated varieties, was compared between different genetic lines. Seeds collected from wild, weedy forms and presumptive hybrid individuals in two distant latitudes were sown in two sites of Buenos Aires University Campus (field and greenhouse). Two type of trichomes were found, which differenciate in length and shape. The pubescence density was significantly different between wild specimens from different latitudes and between culture sites for plants of a same procedence. This character could be involved in physical defences of these plants

Homogenization of dislocation dynamics

In this paper we consider the dynamics of dislocations with the same Burgers vector, contained in the same glide plane, and moving in a material with periodic obstacles. We study two cases: i) the particular case of parallel straight dislocations and ii) the general case of curved dislocations. In each case, we perform rigorously the homogenization of the dynamics and predict the corresponding effective macroscopic elasto-visco-plastic flow rule

Noncovalent interactions in crowded olefinic radical cations

Peer reviewe

Do institutional arrangements make a difference to transport policy and implementation? Lessons for Britain

This paper describes local government decision-making in transport in three areas of the UK, London, West Yorkshire and Edinburgh, in which major changes in local government decision-making structures have taken place over the last decade, and between which arrangements are now very different. The research discusses whether institutional change has had a beneficial or adverse effect, and whether any of the current structures provides a more effective framework for policy development and implementation. The results show that although the sites share a broadly common set of objectives there are differences in devolved responsibilities and in the extent to which various policy options are within the control of the bodies charged with transport policy delivery. The existence of several tiers of government, coupled with the many interactions required between these public sector bodies and the predominantly private sector public transport operators appears to create extra transactional barriers and impedes the implementation of the most effective measures for cutting congestion. There is, however, a compelling argument for the presence of an overarching tier of government to organise travel over a spatial scale compatible with that of major commuter patterns. The extent to which such arrangements currently appear to work is a function of the range of powers and the funding levels afforded to the co-ordinating organisation

The new global governors: Globalization, civil society, and the rise of private philanthropic foundations

One of the important drivers of change within contemporary global civil society is the growing power and influence of private philanthropic foundations (PPFs). In the analysis below, I consider the cases of the Bill and Melinda Gates Foundation (BMGF) and the Open Society Foundations (OSF), the largest and fourth largest PPFs in the world today by wealth or assets, and, especially, their founders. I consider their influence within global civil society, within the context of international development, and the consequences of their activities for a range of international actors. I do so in the context of debate within the literature on the activities of PPFs and I side with advocates of critical scrutiny. In developing my argument, I draw on a range of sources including the financial statements and audited accounts of PPFs, of other non-governmental organizations and of selected inter-governmental organizations. I argue that the BMGF and OSF are engines of neoliberalism and potent symbols of a second distinct ‘gilded age’ and that their influence must be restrained through anti-trust measures and through greater taxation and regulation

The utilisation of health research in policy-making: Concepts, examples and methods of assessment

The importance of health research utilisation in policy-making, and of understanding the mechanisms involved, is increasingly recognised. Recent reports calling for more resources to improve health in developing countries, and global pressures for accountability, draw greater attention to research-informed policy-making. Key utilisation issues have been described for at least twenty years, but the growing focus on health research systems creates additional dimensions. The utilisation of health research in policy-making should contribute to policies that may eventually lead to desired outcomes, including health gains. In this article, exploration of these issues is combined with a review of various forms of policy-making. When this is linked to analysis of different types of health research, it assists in building a comprehensive account of the diverse meanings of research utilisation. Previous studies report methods and conceptual frameworks that have been applied, if with varying degrees of success, to record utilisation in policy-making. These studies reveal various examples of research impact within a general picture of underutilisation. Factors potentially enhancing utilisation can be identified by exploration of: priority setting; activities of the health research system at the interface between research and policy-making; and the role of the recipients, or 'receptors', of health research. An interfaces and receptors model provides a framework for analysis. Recommendations about possible methods for assessing health research utilisation follow identification of the purposes of such assessments. Our conclusion is that research utilisation can be better understood, and enhanced, by developing assessment methods informed by conceptual analysis and review of previous studies

Rethinking Research Ethics for Latinos: The Policy Paradox of Health Reform and the Role of Social Justice

http://dx.doi.org/10.1080/10508422.2012.72999