75 research outputs found

    Phenotypic changes in different spinach varieties grown and selected under organic conditions

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    Organic and low-input agriculture needs flexible varieties that can buffer environmental stress and adapt to the needs of farmers. We implemented an experiment to investigate the evolutionary capacities of a sample of spinach (Spinacia oleracea L.) population varieties for a number of phenotypic traits. Three farmers cultivated, selected and multiplied one or several populations over two years on their farms. The third year, the versions of the varieties cultivated and selected by the different farmers were compared to the original seed lots they had been given. After two cycles of cultivation and on-farm mass selection, all the observed varieties showed significant phenotypic changes (differences between the original version and the version cultivated by farmers) for morphological and phenological traits. When the divergence among versions within varieties was studied, the results show that the varieties conserved their identity, except for one variety, which evolved in such a way that it may now be considered two different varieties. The heterogeneity of the population varieties was assessed in comparison with a commercial F1 hybrid used as control, and we found no specific differences in phenotypic diversity between the hybrid and population varieties. The phenotypic changes shown by the population varieties in response to on-farm cultivation and selection could be useful for the development of specific adaptation. These results call into question the current European seed legislation and the requirements of phenotypic stability for conservation varietie

    Potomac Appalachian Trail Club bulletin

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    This 1946 bulletin by the Potomac Appalachian Trail Club includes (pages 104-108) a 1910 letter to Horace Kephart from A.A. Chable who wrote of his “tramping, camping, and mountain climbing” in the Smokies. Horace Kephart (1862-1931) was a noted naturalist, woodsman, journalist, and author and promoter of the Great Smoky Mountains National Park

    Participation, utilization and development of genetic resources in the Organic Outdoor Tomato Project

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    his paper provides an overview of progress in the implementation of a participatory screening and breeding programme for tomato in Germany. The programme, which commenced in 2003, involves market gardeners, seed collectors, advisors and scientists to optimize the utilization of tomato genetic resources. The results of trials conducted in Schönhagen (Thuringia), Ellingerode (Saxony-Anhalt) and Rhauderfehn (Lower Saxony) to evaluate the yield and quality of selected tomato cultivars are summarized

    Participation, utilization and development of genetic resources in the Organic Outdoor Tomato Project

    No full text
    his paper provides an overview of progress in the implementation of a participatory screening and breeding programme for tomato in Germany. The programme, which commenced in 2003, involves market gardeners, seed collectors, advisors and scientists to optimize the utilization of tomato genetic resources. The results of trials conducted in Schönhagen (Thuringia), Ellingerode (Saxony-Anhalt) and Rhauderfehn (Lower Saxony) to evaluate the yield and quality of selected tomato cultivars are summarized

    From wheat seeds to sourdough bread: microbial dispersion, selection and functional effect

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    <p>Datasets describing ongoing microbial dispersion, selection and functional effect from wheat seeds to sourdough bread. The data were collected, analyzed, and reported within the following publication :</p> <p>Elisa Michel, Matthieu Barret, Véronique Chable, Hélène Chaudy, Héloise Debroise, Marion Deffrasnes, Xavier Dell’Armi, Xavier Dousset, Isabelle Goldringer, Stéphane Guezenec, Isabelle Hue, Julien Lebrat, Judith Legrand, Lili Moyses, Thibault Nidelet, Michel Perrin, Peggy Rigou, Philippe Roussel, Simon Rousselot, Olivier Rué, Estelle Serpolay-Besson, Sylvain Santoni, Bruno Taupier-Letage, Camille Vindras-Fouillet, Bernard Onno and Delphine Sicard. From wheat seeds to sourdough bread: microbial dispersion, selection and functional effect.</p> <p>This work results from a participatory research project BAKERY (https://www6.inra.fr/bakery_eng/)</p&gt

    Breeding initiatives of seeds of landraces, amateur varieties and conservation varieties : an inventory and case studies

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    One of the objectives of the Farm Seed Opportunities (FSO) project is to develop on farm breeding methodologies for the conservation and development of landraces, amateur and conservation varieties. The starting point for the development of these methodologies are the already existing experiences of farmers, small scale seed producers and researchers. To be able to draw on the expertise of these practitioners, we have selected five breeding initiatives for in depth case-studies. Prior to the selection of the five cases we carried out an inventory of all known initiatives within the European Economic Area. Results are presented in this repor

    Breeding initiatives of seeds of landraces, amateur varieties and conservation varieties : an inventory and case studies

    No full text
    One of the objectives of the Farm Seed Opportunities (FSO) project is to develop on farm breeding methodologies for the conservation and development of landraces, amateur and conservation varieties. The starting point for the development of these methodologies are the already existing experiences of farmers, small scale seed producers and researchers. To be able to draw on the expertise of these practitioners, we have selected five breeding initiatives for in depth case-studies. Prior to the selection of the five cases we carried out an inventory of all known initiatives within the European Economic Area. Results are presented in this repor
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