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| Content Provider | Springer Nature Link |
|---|---|
| Author | Yu, Jiwen Yu, Shuxun Gore, Michael Wu, Man Zhai, Honghong Li, Xingli Fan, Shuli Song, Meizhen Zhang, Jinfa |
| Copyright Year | 2013 |
| Abstract | The most widely grown tetraploid Gossypium hirsutum and G. barbadense differ greatly in yield potential and fiber quality and numerous quantitative trait loci (QTLs) have been reported. However, correspondence of QTLs between experiments and populations is poor due to limited number of markers, small population size and inaccurate phenotyping. The purpose of the present study was to map QTLs for yield, yield components and fiber quality traits using testcross progenies between a large interspecific F2 population and a commercial cotton cultivar as the tester. The results were compared to these from its F2 and F2:3 progenies. Of the 177 QTLs identified from the three populations, 65 fiber QTLs and 51 yield QTLs were unique with an average of 8–12 QTLs per traits. All the 26 chromosomes carried QTLs, but differed in the number of QTLs and the number of QTLs between fiber and yield QTLs. The congruence of QTLs identified across populations was higher (20–60 %) for traits with higher heritabilities including fiber quality, seed index and lint percentage, but lower (10–25 %) for lower heritability traits-seedcotton and lint yields. Major QTLs, QTL clusters for the same traits and QTL ‘hotspots’ for different traits were also identified. This research represents the first report using a testcross population in QTL mapping in interspecific cotton crosses and provides useful information for further comparative analysis and marker-assisted selection. |
| Starting Page | 375 |
| Ending Page | 389 |
| Page Count | 15 |
| File Format | |
| ISSN | 00142336 |
| Journal | Euphytica |
| Volume Number | 191 |
| Issue Number | 3 |
| e-ISSN | 15735060 |
| Language | English |
| Publisher | Springer Netherlands |
| Publisher Date | 2013-03-03 |
| Publisher Place | Dordrecht |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Tetraploid cotton Linkage map Testcross Quantitative trait loci (QTL) Plant Sciences Plant Genetics & Genomics Plant Pathology Plant Physiology Biotechnology |
| Content Type | Text |
| Resource Type | Article |
| Subject | Genetics Plant Science Horticulture Agronomy and Crop Science |
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