Constrating seed management practices for landraces of Barley in Syria and pearl millet in Rajhastan, India, inferred from gene flow data

Parzies Heiko K., Vom Brocke Kirsten, Spoor W., Geiger Hartwig H.. 2001. Constrating seed management practices for landraces of Barley in Syria and pearl millet in Rajhastan, India, inferred from gene flow data. In : The XVIth EUCARPIA Congress, Edingburg, Scotland, 2001. By G.R. Mackay MBE. s.l. : s.n., 4 p. EUCARPIA Congress "Plant Breeding: Sustaining the Future". 16, Edimbourg, Royaume-Uni, 10 Septembre 2001/14 Septembre 2001.

Résumé : The population genetic theory of isolation by distance was applied to infer seed exchange between farmers of two very different crop species, barley and pearl millet, in semi-arid regions of Syria and Rajhastan, India, respectively. Gene flow data between populations of landraces were obtained from genetic markers and plotted against geographic distance. It was anticipated that restricted seed exchange would be reflected by exponentially decreasing gene flow with increasing geographic distance. While seed management of barley landraces in Northern Syria seems to be characterised by locally restricted seed exchange, a significant seed exchange over long distances was observed for pearl millet landraces in Rajhastan. It appears that these contrasting results can not only be explained by different mating systems of the crop species, but by different strategies to maintain local landraces.

Classification Agris : F03 - Production et traitement des semences

Auteurs et affiliations

• Parzies Heiko K., Universität Hohenheim (DEU)
• Vom Brocke Kirsten, CIRAD-CA-CALIM (BFA)
• Spoor W., Scottish Agricultural College (GBR)
• Geiger Hartwig H., Institut für Pflanzenzüchtung, Saatgutforschung und Populationsgenetik (DEU)

Source : Cirad - Agritrop (https://agritrop.cirad.fr/528578/)

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