Mapping QTL for Root and Shoot Morphological Traits in a Durum Wheat × T. dicoccum Segregating Population at Seedling Stage
A segregating population of 136 recombinant inbred lines derived from a cross between the durum wheat cv. “Simeto” and the T. dicoccum accession “Molise Colli” was grown in soil and evaluated for a number of shoot and root morphological traits. A total of 17 quantitative trait loci (QTL) were identi...
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| Format: | Article |
| Language: | English |
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Wiley
2017-01-01
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| Series: | International Journal of Genomics |
| Online Access: | http://dx.doi.org/10.1155/2017/6876393 |
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| author | Anna Iannucci Daniela Marone Maria Anna Russo Pasquale De Vita Vito Miullo Pina Ferragonio Antonio Blanco Agata Gadaleta Anna Maria Mastrangelo |
| author_facet | Anna Iannucci Daniela Marone Maria Anna Russo Pasquale De Vita Vito Miullo Pina Ferragonio Antonio Blanco Agata Gadaleta Anna Maria Mastrangelo |
| author_sort | Anna Iannucci |
| collection | DOAJ |
| description | A segregating population of 136 recombinant inbred lines derived from a cross between the durum wheat cv. “Simeto” and the T. dicoccum accession “Molise Colli” was grown in soil and evaluated for a number of shoot and root morphological traits. A total of 17 quantitative trait loci (QTL) were identified for shoot dry weight, number of culms, and plant height and for root dry weight, volume, length, surface area, and number of forks and tips, on chromosomes 1B, 2A, 3A, 4B, 5B, 6A, 6B, and 7B. LODs were 2.1 to 21.6, with percent of explained phenotypic variability between 0.07 and 52. Three QTL were mapped to chromosome 4B, one of which corresponds to the Rht-B1 locus and has a large impact on both shoot and root traits (LOD 21.6). Other QTL that have specific effects on root morphological traits were also identified. Moreover, meta-QTL analysis was performed to compare the QTL identified in the “Simeto” × “Molise Colli” segregating population with those described in previous studies in wheat, with three novel QTL defined. Due to the complexity of phenotyping for root traits, further studies will be helpful to validate these regions as targets for breeding programs for optimization of root function for field performance. |
| format | Article |
| id | doaj-art-d1c2c3addeb74174a5827913d6197665 |
| institution | Kabale University |
| issn | 2314-436X 2314-4378 |
| language | English |
| publishDate | 2017-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Genomics |
| spelling | doaj-art-d1c2c3addeb74174a5827913d61976652025-02-03T05:59:49ZengWileyInternational Journal of Genomics2314-436X2314-43782017-01-01201710.1155/2017/68763936876393Mapping QTL for Root and Shoot Morphological Traits in a Durum Wheat × T. dicoccum Segregating Population at Seedling StageAnna Iannucci0Daniela Marone1Maria Anna Russo2Pasquale De Vita3Vito Miullo4Pina Ferragonio5Antonio Blanco6Agata Gadaleta7Anna Maria Mastrangelo8Consiglio per la Ricerca in Agricoltura e l’analisi dell’economia Agraria-Centro Cerealicoltura e Colture Industriali (CREA-CI), SS 673 km 25.2, 71122 Foggia, ItalyConsiglio per la Ricerca in Agricoltura e l’analisi dell’economia Agraria-Centro Cerealicoltura e Colture Industriali (CREA-CI), SS 673 km 25.2, 71122 Foggia, ItalyConsiglio per la Ricerca in Agricoltura e l’analisi dell’economia Agraria-Centro Cerealicoltura e Colture Industriali (CREA-CI), SS 673 km 25.2, 71122 Foggia, ItalyConsiglio per la Ricerca in Agricoltura e l’analisi dell’economia Agraria-Centro Cerealicoltura e Colture Industriali (CREA-CI), SS 673 km 25.2, 71122 Foggia, ItalyConsiglio per la Ricerca in Agricoltura e l’analisi dell’economia Agraria-Centro Cerealicoltura e Colture Industriali (CREA-CI), SS 673 km 25.2, 71122 Foggia, ItalyConsiglio per la Ricerca in Agricoltura e l’analisi dell’economia Agraria-Centro Cerealicoltura e Colture Industriali (CREA-CI), SS 673 km 25.2, 71122 Foggia, ItalyDepartment of Soil, Plant and Food Sciences, Section of Genetic and Plant Breeding, University of Bari Aldo Moro, Via G. Amendola 165/A, 70126 Bari, ItalyDepartment of Soil, Plant and Food Sciences, Section of Genetic and Plant Breeding, University of Bari Aldo Moro, Via G. Amendola 165/A, 70126 Bari, ItalyConsiglio per la Ricerca in Agricoltura e l’analisi dell’economia Agraria-Centro Cerealicoltura e Colture Industriali (CREA-CI), SS 673 km 25.2, 71122 Foggia, ItalyA segregating population of 136 recombinant inbred lines derived from a cross between the durum wheat cv. “Simeto” and the T. dicoccum accession “Molise Colli” was grown in soil and evaluated for a number of shoot and root morphological traits. A total of 17 quantitative trait loci (QTL) were identified for shoot dry weight, number of culms, and plant height and for root dry weight, volume, length, surface area, and number of forks and tips, on chromosomes 1B, 2A, 3A, 4B, 5B, 6A, 6B, and 7B. LODs were 2.1 to 21.6, with percent of explained phenotypic variability between 0.07 and 52. Three QTL were mapped to chromosome 4B, one of which corresponds to the Rht-B1 locus and has a large impact on both shoot and root traits (LOD 21.6). Other QTL that have specific effects on root morphological traits were also identified. Moreover, meta-QTL analysis was performed to compare the QTL identified in the “Simeto” × “Molise Colli” segregating population with those described in previous studies in wheat, with three novel QTL defined. Due to the complexity of phenotyping for root traits, further studies will be helpful to validate these regions as targets for breeding programs for optimization of root function for field performance.http://dx.doi.org/10.1155/2017/6876393 |
| spellingShingle | Anna Iannucci Daniela Marone Maria Anna Russo Pasquale De Vita Vito Miullo Pina Ferragonio Antonio Blanco Agata Gadaleta Anna Maria Mastrangelo Mapping QTL for Root and Shoot Morphological Traits in a Durum Wheat × T. dicoccum Segregating Population at Seedling Stage International Journal of Genomics |
| title | Mapping QTL for Root and Shoot Morphological Traits in a Durum Wheat × T. dicoccum Segregating Population at Seedling Stage |
| title_full | Mapping QTL for Root and Shoot Morphological Traits in a Durum Wheat × T. dicoccum Segregating Population at Seedling Stage |
| title_fullStr | Mapping QTL for Root and Shoot Morphological Traits in a Durum Wheat × T. dicoccum Segregating Population at Seedling Stage |
| title_full_unstemmed | Mapping QTL for Root and Shoot Morphological Traits in a Durum Wheat × T. dicoccum Segregating Population at Seedling Stage |
| title_short | Mapping QTL for Root and Shoot Morphological Traits in a Durum Wheat × T. dicoccum Segregating Population at Seedling Stage |
| title_sort | mapping qtl for root and shoot morphological traits in a durum wheat t dicoccum segregating population at seedling stage |
| url | http://dx.doi.org/10.1155/2017/6876393 |
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