Genomic selection for spot blotch in bread wheat breeding panels, full-sibs and half-sibs and index-based selection for spot blotch, heading and plant height
A major biotic stress challenging bread wheat production in regions characterized by humid and warm weather is spot blotch caused by the fungus Bipolaris sorokiniana. Since genomic selection (GS) is a promising selection tool, we evaluated its potential for spot blotch in seven breeding panels compr...
| Autores principales: | , , , , , , , , , , , , , |
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| Formato: | Journal Article |
| Lenguaje: | Inglés |
| Publicado: |
Springer
2022
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| Materias: | |
| Acceso en línea: | https://hdl.handle.net/10568/126596 |
| _version_ | 1855536418620702720 |
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| author | Juliana, Philomin Xinyao He Poland, Jesse A. Roy, Krishna K. Malaker, Paritosh K. Vinod Kumar Mishra Chand, Ramesh Shrestha, Sandesh Kumar, Uttam Roy, Chandan Gahtyari, Navin C. Joshi, Arun Kumar Singh, Ravi P. Singh, Pawan K. |
| author_browse | Chand, Ramesh Gahtyari, Navin C. Joshi, Arun Kumar Juliana, Philomin Kumar, Uttam Malaker, Paritosh K. Poland, Jesse A. Roy, Chandan Roy, Krishna K. Shrestha, Sandesh Singh, Pawan K. Singh, Ravi P. Vinod Kumar Mishra Xinyao He |
| author_facet | Juliana, Philomin Xinyao He Poland, Jesse A. Roy, Krishna K. Malaker, Paritosh K. Vinod Kumar Mishra Chand, Ramesh Shrestha, Sandesh Kumar, Uttam Roy, Chandan Gahtyari, Navin C. Joshi, Arun Kumar Singh, Ravi P. Singh, Pawan K. |
| author_sort | Juliana, Philomin |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | A major biotic stress challenging bread wheat production in regions characterized by humid and warm weather is spot blotch caused by the fungus Bipolaris sorokiniana. Since genomic selection (GS) is a promising selection tool, we evaluated its potential for spot blotch in seven breeding panels comprising 6736 advanced lines from the International Maize and Wheat Improvement Center. Our results indicated moderately high mean genomic prediction accuracies of 0.53 and 0.40 within and across breeding panels, respectively which were on average 177.6% and 60.4% higher than the mean accuracies from fixed effects models using selected spot blotch loci. Genomic prediction was also evaluated in full-sibs and half-sibs panels and sibs were predicted with the highest mean accuracy (0.63) from a composite training population with random full-sibs and half-sibs. The mean accuracies when full-sibs were predicted from other full-sibs within families and when full-sibs panels were predicted from other half-sibs panels were 0.47 and 0.44, respectively. Comparison of GS with phenotypic selection (PS) of the top 10% of resistant lines suggested that GS could be an ideal tool to discard susceptible lines, as greater than 90% of the susceptible lines discarded by PS were also discarded by GS. We have also reported the evaluation of selection indices to simultaneously select non-late and non-tall genotypes with low spot blotch phenotypic values and genomic-estimated breeding values. Overall, this study demonstrates the potential of integrating GS and index-based selection for improving spot blotch resistance in bread wheat. |
| format | Journal Article |
| id | CGSpace126596 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2022 |
| publishDateRange | 2022 |
| publishDateSort | 2022 |
| publisher | Springer |
| publisherStr | Springer |
| record_format | dspace |
| spelling | CGSpace1265962025-12-08T10:11:39Z Genomic selection for spot blotch in bread wheat breeding panels, full-sibs and half-sibs and index-based selection for spot blotch, heading and plant height Juliana, Philomin Xinyao He Poland, Jesse A. Roy, Krishna K. Malaker, Paritosh K. Vinod Kumar Mishra Chand, Ramesh Shrestha, Sandesh Kumar, Uttam Roy, Chandan Gahtyari, Navin C. Joshi, Arun Kumar Singh, Ravi P. Singh, Pawan K. foods biotic stress soft wheat genomics plant height genes A major biotic stress challenging bread wheat production in regions characterized by humid and warm weather is spot blotch caused by the fungus Bipolaris sorokiniana. Since genomic selection (GS) is a promising selection tool, we evaluated its potential for spot blotch in seven breeding panels comprising 6736 advanced lines from the International Maize and Wheat Improvement Center. Our results indicated moderately high mean genomic prediction accuracies of 0.53 and 0.40 within and across breeding panels, respectively which were on average 177.6% and 60.4% higher than the mean accuracies from fixed effects models using selected spot blotch loci. Genomic prediction was also evaluated in full-sibs and half-sibs panels and sibs were predicted with the highest mean accuracy (0.63) from a composite training population with random full-sibs and half-sibs. The mean accuracies when full-sibs were predicted from other full-sibs within families and when full-sibs panels were predicted from other half-sibs panels were 0.47 and 0.44, respectively. Comparison of GS with phenotypic selection (PS) of the top 10% of resistant lines suggested that GS could be an ideal tool to discard susceptible lines, as greater than 90% of the susceptible lines discarded by PS were also discarded by GS. We have also reported the evaluation of selection indices to simultaneously select non-late and non-tall genotypes with low spot blotch phenotypic values and genomic-estimated breeding values. Overall, this study demonstrates the potential of integrating GS and index-based selection for improving spot blotch resistance in bread wheat. 2022-06 2023-01-05T09:09:07Z 2023-01-05T09:09:07Z Journal Article https://hdl.handle.net/10568/126596 en Open Access application/pdf Springer Juliana, P., He, X., Poland, J., Roy, K. K., Malaker, P. K., Mishra, V. K., Chand, R., Shrestha, S., Kumar, U., Roy, C., Gahtyari, N. C., Joshi, A. K., Singh, R. P., & Singh, P. K. (2022). Genomic selection for spot blotch in bread wheat breeding panels, full-sibs and half-sibs and index-based selection for spot blotch, heading and plant height. Theoretical and Applied Genetics, 135(6), 1965–1983. https://doi.org/10.1007/s00122-022-04087-y |
| spellingShingle | foods biotic stress soft wheat genomics plant height genes Juliana, Philomin Xinyao He Poland, Jesse A. Roy, Krishna K. Malaker, Paritosh K. Vinod Kumar Mishra Chand, Ramesh Shrestha, Sandesh Kumar, Uttam Roy, Chandan Gahtyari, Navin C. Joshi, Arun Kumar Singh, Ravi P. Singh, Pawan K. Genomic selection for spot blotch in bread wheat breeding panels, full-sibs and half-sibs and index-based selection for spot blotch, heading and plant height |
| title | Genomic selection for spot blotch in bread wheat breeding panels, full-sibs and half-sibs and index-based selection for spot blotch, heading and plant height |
| title_full | Genomic selection for spot blotch in bread wheat breeding panels, full-sibs and half-sibs and index-based selection for spot blotch, heading and plant height |
| title_fullStr | Genomic selection for spot blotch in bread wheat breeding panels, full-sibs and half-sibs and index-based selection for spot blotch, heading and plant height |
| title_full_unstemmed | Genomic selection for spot blotch in bread wheat breeding panels, full-sibs and half-sibs and index-based selection for spot blotch, heading and plant height |
| title_short | Genomic selection for spot blotch in bread wheat breeding panels, full-sibs and half-sibs and index-based selection for spot blotch, heading and plant height |
| title_sort | genomic selection for spot blotch in bread wheat breeding panels full sibs and half sibs and index based selection for spot blotch heading and plant height |
| topic | foods biotic stress soft wheat genomics plant height genes |
| url | https://hdl.handle.net/10568/126596 |
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