3384 1 archive 2034 disk0/00/00/33/84 2005-03-05 2009-08-20 14:23:56 2009-08-20 14:23:56 conference_item show 0 de wissenschaftstagung-2005 1.3.-4.3.2005 8. Wissenschaftstagung Ökologischer Landbau - Ende der Nische Kassel yes 0 Local adaptation by conservation and selection on-farm. A study with lentil landraces TRUE paper Horneburg Bernd Dr pub 7plantbreed Ökozüchtung, Biodiversität, Linse, Regionalwirtschaft Agrobiodiversity and the on-farm production of seeds have been decreasing on a glo-bal scale during the past century. The concept of an organic farm as a self contained organism requires an entirely different development: Decentralized organic breeding can achieve an adaptation to local pedoclimatic conditions and preferences. Until now very little research has been carried out into the mechanisms and prospects of local adaptation fostered by breeding and maintaining varieties on farm. To gain additional knowledge field trials were carried out in three farms during three years. Three lentil (Lens culinaris Medik.) landraces were subjected to natural selec-tion, positive mass selection, and progeny testing. Agronomic, morphological, and phenological traits have been investigated. The results indicated changes in the population structure influenced by the location and the method of selection. Bottlenecks in population size in a varieties’ biography can severely reduce the adaptation ability. 2005 published Ende der Nische, Beiträge zur 8. Wissenschaftstagung Ökologischer Landbau kassel university press GmbH, Kassel Heß J Rahmann G CLAR S (2002) Kommerzialisierung des Saatgutmarktes. In: BUKO Agrar Koordination (Hrsg.): Biologische Vielfalt und Ernährungssicherung. BUKO Agrar Dossier 25:37-42 GOLDRINGER I, PAILLARD S, ENJALBERT J, DAVID JL, BRABANT P (1998) Divergent evolution of wheat populations conducted under recurrent selection and dynamic management. Agronomie 18:413-425 HAMMER K (1998) Agrarbiodiversität und pflanzengenetische Ressourcen. Bonn: ZADI, 98 p, Schriften zu Genetischen Ressourcen 10 HORNEBURG B (2003a) Standortspezifische Sortenentwicklung - eine Studie mit Landsorten der Linse. Dissertation Universität Göttingen, zugleich: Bonn: ZADI, 64 p, Schriften zu Genetischen Ressourcen 21 HORNEBURG B (2003b) Frischer Wind für eine alte Kulturpflanze! Linsen im ökologischen Anbau, ihre Geschichte und Verwendung. Hrsg. Dreschflegel e.V. und Institut für Pflanzenbau und Pflanzenzüchtung der Universität Göttingen, 50 p, ISBN 3-00-012637-6 JANA S, KHANGURA BS (1986) Conservation of diversity in bulk populations of barley (Hordeum vulgare L.). Euphytica 35:761-776 public 3397 1 3384 1 application/pdf de public

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