Nineteen microsatellite markers were used to fingerprint a set of 19 potato landraces from the island of La Palma (Canary Islands). These landraces represent relicts of early introductions from South America, although most are commonly cultivated by local farmers. The SSR primers detected 62 polymorphisms, 13 of which were present in all landraces. Several accession- and group-specific markers were detected. Jaccard similarity coefficients were estimated from the molecular data and UPGMA cluster analysis was performed. Some cultivars with related common names clustered together.
Résultats de la recherche
Showing items 1 through 9 of 22.-
Library ResourceDocuments de politique et mémoiresjuin, 2007Espagne, Amériques, Amérique du Sud
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Library ResourceDocuments de politique et mémoiresseptembre, 2007France, Belgique, Espagne, Allemagne, Danemark, Italie, Autriche, Pays-Bas, République tchèque
The effects of subsidies on the development of organic farming (OF) in the Czech Republic and in some selected EU countries are analysed in this article. The level of subsidies for OF in the Czech Republic is continuously increasing. In 1998, the total amount of subsidies was 48 million CZK, whereas in 2004, it increased to nearly 277 million CZK. The increase of subsidies led to an increase in the number of organic farms as well as the area under OF.
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Library ResourceDocuments de politique et mémoiresjuin, 2010Espagne
This study was done to establish relationships between management and sanitary practices on ewe dairy farms and the quality of milk produced. For this purpose, a survey was carried out on 118 farms and a total of 121,117 animals in the Castilla-La Mancha region (Southeast Spain) in which the veterinarians of the Association of Sanitary Defence participated. Flocks varied considerably in size, ranging from 120-7,200 sheep, with an average milking period lasting 3-5 months and milk yields of between 50 and 150 litres per lactation by mechanical systems on 75.0% of farms.
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Library ResourceDocuments de politique et mémoiresjuin, 2011Espagne
La importancia de los incendios forestales en la cuenca mediterránea hace de estas perturbaciones un factor determinante en el análisis y la gestión de riesgos ecológicos, así como en los vinculados a la protección civil. La actual demanda de servicios recreativos en el bosque genera una intensificación de estos riesgos, lo que precisa de una adecuada respuesta por todos los agentes implicados en la gestión.
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Library ResourceDocuments de politique et mémoiresoctobre, 2006Espagne
El artículo presenta los resultados obtenidos en los distintos proyectos llevados a cabo por la Universidad de Murcia (caracterización genética de la abeja murciana y protección y mejora de las poblaciones locales, análisis de la diversidad genética de poblaciones peninsulares e insulares de Apis mellifera iberiensis, entre otros), que les ha llevado a caracterizar las poblaciones de abejas de la Península Ibérica y a trazar un mapa de distribución de linajes evolutivos de estas poblaciones.
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Library ResourceDocuments de politique et mémoiresseptembre, 2009Espagne
Semen was collected from 10 Black Castellana roosters and the classic sperm variables (ejaculate volume, sperm concentration and sperm motility) examined. In addition, the hypo-osmotic swelling test was used to investigate sperm cell membrane integrity, and acidic aniline blue staining used to screen for morphological abnormalities (including acrosome integrity) and to examine the condensation status of the chromatin. The latter was also examined by Gram staining. Large and small semen volumes were associated high and low sperm concentrations respectively (R2=0.04, P>0.05).
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Library ResourceDocuments de politique et mémoiresseptembre, 2010Espagne
The objective of the Spanish government-funded project GESMO (Gestión integral del acuífero 08.29 Mancha Oriental), is to develop new tools for the evaluation and monitoring of water policies. These tools have to be capable of matching resource exploitation with reserve sustainability, applied to aquifer 08.29 in the Eastern Mancha, Spain. A decision support system (DSS), was developed as part of the GESMO project, that integrates two different systems within one computer application. One, an hydrogeological model, simulates the River Júcar basin and its associated aquifer.
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Library ResourceDocuments de politique et mémoiresseptembre, 2007Espagne
This paper aims to contribute further research on the conceptualization of agricultural multifunctionality through quantitative methods. The empirical analysis is based on a large dataset (Agrobarometre of Andalusia) consisting of self-reported measures of individual opinions on multifunctionality. Ordered probit models are proposed to analyze the extent to which individuals' perceptions of multifunctionality can be explained not only by individual and regional characteristics, but more importantly, by the preferences individuals have for a given type of agriculture.
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Library ResourceDocuments de politique et mémoiresavril, 2009Espagne
Current knowledge of the biology of Picris willkommii and his grade of threat, seem not to be sufficient to ensure longterm persistence of this plant species endemic to the South-Western Iberian Peninsula. In Spain, main populations of the species are narrowly restricted to therophytic grasslands around the town of Ayamonte, by the Guadiana river drainage. Results of the present study indicate that P.
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Library ResourceDocuments de politique et mémoiresdécembre, 2010Espagne
Land use changes, including land abandonment, and forest fires have been two key factors that have characterized the evolution of Mediterranean ecosystems. This work studies the evolution in the hydrologic characteristics and the erosive response of a Mediterranean forest soil, which has undergone during years changes in its forest use and the fire impact, are shown. This soil is in recovering stage since year 1996. The study has been carried out in the Experimental Station of Porta-Coeli in a system of four erosion plots (40 x 8 m) of closed type.
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