Advanced backcross QTL analysis in progenies derived from a cross between a German elite winter wheat variety and a synthetic wheat (Triticum aestivumL.)
| Autor: | M. W. Ganal, Marion S. Röder, X. Q. Huang, H. Kempf |
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| Rok vydání: | 2004 |
| Předmět: |
Genotype
Synthetic wheat Quantitative Trait Loci Winter wheat Breeding Biology Quantitative trait locus Grain weight Germany Genetics Poaceae Crosses Genetic Triticum Analysis of Variance Chromosome Mapping food and beverages Agriculture General Medicine Qtl analysis Phenotype Agronomy Backcrossing Microsatellite Agronomy and Crop Science Microsatellite Repeats Biotechnology |
| Zdroj: | Theoretical and Applied Genetics. 109:933-943 |
| ISSN: | 1432-2242 0040-5752 |
| DOI: | 10.1007/s00122-004-1708-7 |
| Popis: | We report here the second advanced backcross quantitative trait locus (AB-QTL) analysis carried out in winter wheat. Seven agronomic traits were studied in a BC2F1 population derived from a cross between the German winter wheat variety Flair and the synthetic wheat line XX86 developed in Japan. We selected 111 BC2F1 lines and genotyped these with 197 microsatellite markers. Field data for seven agronomic traits were collected from corresponding BC2F3 families that were grown at up to six locations in Germany. QTL analyses for yield and yield components were performed using single-marker regression and interval mapping. A total of 57 putative QTLs derived from XX86 were detected, of which 24 (42.1%) were found to have a positive effect from the synthetic wheat XX86. These favourable QQTLs were mainly associated with thousand-grain weight and grain weight per ear. Many QTLs for correlated traits were mapped in similar chromosomal regions. The AB-QTL data obtained in the present study are discussed and compared with results from previous QTL analyses. |
| Databáze: | OpenAIRE |
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