Can natural variation in grain P concentrations be exploited in rice breeding to lower fertilizer requirements?
Agricultural usage of phosphorus (P) is largely driven by the amount of P removed from fields in harvested plant matter as offtake needs to be balanced by P fertilizer application. Reducing P concentration in grains is a way to decrease P offtake and reduce P fertilizer requirements or soil P mining...
| Autores principales: | , , , , |
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| Formato: | Journal Article |
| Lenguaje: | Inglés |
| Publicado: |
Public Library of Science
2017
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| Acceso en línea: | https://hdl.handle.net/10568/165028 |
| _version_ | 1855543248215343104 |
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| author | Wang, Fanmiao King, James Douglas Morrison Rose, Terry Kretzschmar, Tobias Wissuwa, Matthias |
| author_browse | King, James Douglas Morrison Kretzschmar, Tobias Rose, Terry Wang, Fanmiao Wissuwa, Matthias |
| author_facet | Wang, Fanmiao King, James Douglas Morrison Rose, Terry Kretzschmar, Tobias Wissuwa, Matthias |
| author_sort | Wang, Fanmiao |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Agricultural usage of phosphorus (P) is largely driven by the amount of P removed from fields in harvested plant matter as offtake needs to be balanced by P fertilizer application. Reducing P concentration in grains is a way to decrease P offtake and reduce P fertilizer requirements or soil P mining where insufficient P is applied. Our objective was to assesses the genotypic variation for grain P concentration present within the rice gene pool and resolve to what extent it is affected by environment (P supply) or associated with genetic factors. About 2-fold variation in grain P concentrations were detected in two rice diversity panels, however, environmental effects were stronger than genotype effects. Genome wide association studies identified several putative loci associated with grain P concentrations. In most cases this was caused by minor haplotype associations with high grain P concentrations while associations with reduced P concentrations were identified on chromosomes 1, 6, 8, 11 and 12. Only the latter type of locus is of interest in breeding for reduced P concentrations and the most promising locus was at 20.7 Mb on chromosome 8, where a rare haplotype that was absent from all modern varieties studied reduced grain P concentration by 9.3%. This and all other loci were not consistently detected across environments or association panels, confirming that genetic effects were small compared to effects of environment. We conclude that the genetic effects detected were not sufficiently large or consistent to be of utility in plant breeding. Instead breeding efforts may have to rely on small to medium effect mutants already identified and attempt to achieve a more pronounced reduction in grain P concentration through the introgression of these mutants into a single genetic background |
| format | Journal Article |
| id | CGSpace165028 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2017 |
| publishDateRange | 2017 |
| publishDateSort | 2017 |
| publisher | Public Library of Science |
| publisherStr | Public Library of Science |
| record_format | dspace |
| spelling | CGSpace1650282025-01-24T14:21:05Z Can natural variation in grain P concentrations be exploited in rice breeding to lower fertilizer requirements? Wang, Fanmiao King, James Douglas Morrison Rose, Terry Kretzschmar, Tobias Wissuwa, Matthias Agricultural usage of phosphorus (P) is largely driven by the amount of P removed from fields in harvested plant matter as offtake needs to be balanced by P fertilizer application. Reducing P concentration in grains is a way to decrease P offtake and reduce P fertilizer requirements or soil P mining where insufficient P is applied. Our objective was to assesses the genotypic variation for grain P concentration present within the rice gene pool and resolve to what extent it is affected by environment (P supply) or associated with genetic factors. About 2-fold variation in grain P concentrations were detected in two rice diversity panels, however, environmental effects were stronger than genotype effects. Genome wide association studies identified several putative loci associated with grain P concentrations. In most cases this was caused by minor haplotype associations with high grain P concentrations while associations with reduced P concentrations were identified on chromosomes 1, 6, 8, 11 and 12. Only the latter type of locus is of interest in breeding for reduced P concentrations and the most promising locus was at 20.7 Mb on chromosome 8, where a rare haplotype that was absent from all modern varieties studied reduced grain P concentration by 9.3%. This and all other loci were not consistently detected across environments or association panels, confirming that genetic effects were small compared to effects of environment. We conclude that the genetic effects detected were not sufficiently large or consistent to be of utility in plant breeding. Instead breeding efforts may have to rely on small to medium effect mutants already identified and attempt to achieve a more pronounced reduction in grain P concentration through the introgression of these mutants into a single genetic background 2017-06-26 2024-12-19T12:54:37Z 2024-12-19T12:54:37Z Journal Article https://hdl.handle.net/10568/165028 en Open Access Public Library of Science Wang, Fanmiao; King, James Douglas Morrison; Rose, Terry; Kretzschmar, Tobias and Wissuwa, Matthias. 2017. Can natural variation in grain P concentrations be exploited in rice breeding to lower fertilizer requirements?. PLoS ONE, Volume 12 no. 6 p. e0179484 |
| spellingShingle | Wang, Fanmiao King, James Douglas Morrison Rose, Terry Kretzschmar, Tobias Wissuwa, Matthias Can natural variation in grain P concentrations be exploited in rice breeding to lower fertilizer requirements? |
| title | Can natural variation in grain P concentrations be exploited in rice breeding to lower fertilizer requirements? |
| title_full | Can natural variation in grain P concentrations be exploited in rice breeding to lower fertilizer requirements? |
| title_fullStr | Can natural variation in grain P concentrations be exploited in rice breeding to lower fertilizer requirements? |
| title_full_unstemmed | Can natural variation in grain P concentrations be exploited in rice breeding to lower fertilizer requirements? |
| title_short | Can natural variation in grain P concentrations be exploited in rice breeding to lower fertilizer requirements? |
| title_sort | can natural variation in grain p concentrations be exploited in rice breeding to lower fertilizer requirements |
| url | https://hdl.handle.net/10568/165028 |
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