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Detection of quantitative trait loci on chromosome 5R of rye (Secale cereale L.) |
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| Authors: | A Börner V Korzun A V Voylokov W E Weber |
| Institution: | Institut für Pflanzengenetik und Kulturpflanzenforschung (IPK), Corrensstra?e 3, D-06466 Gatersleben, Germany Fax:+49 39481 5155 E-mail: boerner@ipk-gatersleben.de, DE St. Petersburg State University, Universitetskaya nab. 7/9, 199034 St. Petersburg, Russia, RU Institut für Pflanzenzüchtung und Pflanzenschutz, Martin-Luther-Universit?t Halle-Wittenberg, Berliner Stra?e 2, D-06188 Hohenthurm, Germany, DE |
| Abstract: | Progenies of an F2 mapping population were analyzed for quantitative traits to detect QTLs by using marker information from F2 plants for chromosome 5R. The mapping population was segregating for the major dwarfing gene Ddw1 and the gene Hp1 for hairy peduncle. The only QTL determining plant height was located between HP1 and Ddw1 on the distal part of chromosome 5RL. At the same position a QTL for peduncle length was found, and this trait was closely related to plant height (r=0.895). Since Hp1 and Ddw1 are dominant marker loci, no dominance effect could be estimated. The QTLs for spike length and the number of florets were located near the centromere on 5RL. These two traits were correlated with r=0.824 and showed partial dominance, but these traits were not correlated to plant height and peduncle length. Homoeologous relationships between the QTLs mapped for the first time in rye and those mapped in other Triticeae members are discussed. Received: 8 June 1998 / Accepted: 8 October 1998 |
| Keywords: | Quantitative trait loci Genetic mapping RFLP Agronomic characters Secale cereale L |
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