Comparative molecular mapping of GA insensitive Rht loci on chromosomes 4B and 4D of common wheat (Triticum aestivum L.) |
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| Authors: | A Börner M Röder V Korzun |
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| Institution: | Institut für Pflanzengenetik und Kulturpflanzenforschung (IPK), Corrensstra?e 3, D-06466 Gatersleben, Germany Fax: +49-39482-5155 E-mail: boerner@ipk-gatersleben.de, DE
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| Abstract: | The two GA-insensitive dwarfing gene loci Rht-B1 and Rht-D1 were mapped using three F2 populations, segregating for Rht-B1c (Rht3), Rht-D1b (Rht2) or Rht-D1c (Rht10). Rht-B1c was mapped on chromosome 4BS in the centromere region, distal and closely linked to the RFLP markers Xpsr144 (11.9 cM) and Xpsr584 (17.8 cM), but proximal to Xmwg634 (30 cM). Rht-D1c, however, was found to be closely linked to the distally located markers Xpsr921 (0.8 cM) and Xmwg634 (1.5 cM). The homoeologous relationships between the GA-insensitive dwarfing genes within the Triticeae are discussed.
Received: 2 May 1997 / Accepted: 9 June 1997 |
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| Keywords: | Comparative genetic mapping Dwarfing genes GA insensitivity Microsatellites RFLP Wheat |
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