Genetic variation in biomass traits among 20 diverse rice varieties
Biofuels provide a promising route of producing energy while reducing reliance on petroleum. Developing sustainable liquid fuel production from cellulosic feedstock is a major challenge and will require significant breeding efforts to maximize plant biomass production. Our approach to elucidating ge...
| Autores principales: | , , , , , , , |
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| Formato: | Journal Article |
| Lenguaje: | Inglés |
| Publicado: |
Oxford University Press
2011
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| Materias: | |
| Acceso en línea: | https://hdl.handle.net/10568/165984 |
| _version_ | 1855534007544971264 |
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| author | Jahn, Courtney E. Mckay, John K. Mauleon, Ramil Stephens, Janice McNally, Kenneth L. Bush, Daniel R. Leung, Hei Leach, Jan E. |
| author_browse | Bush, Daniel R. Jahn, Courtney E. Leach, Jan E. Leung, Hei Mauleon, Ramil McNally, Kenneth L. Mckay, John K. Stephens, Janice |
| author_facet | Jahn, Courtney E. Mckay, John K. Mauleon, Ramil Stephens, Janice McNally, Kenneth L. Bush, Daniel R. Leung, Hei Leach, Jan E. |
| author_sort | Jahn, Courtney E. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Biofuels provide a promising route of producing energy while reducing reliance on petroleum. Developing sustainable liquid fuel production from cellulosic feedstock is a major challenge and will require significant breeding efforts to maximize plant biomass production. Our approach to elucidating genes and genetic pathways that can be targeted for improving biomass production is to exploit the combination of genomic tools and genetic diversity in rice (Oryza sativa). In this study, we analyzed a diverse set of 20 recently resequenced rice varieties for variation in biomass traits at several different developmental stages. The traits included plant size and architecture, aboveground biomass, and underlying physiological processes. We found significant genetic variation among the 20 lines in all morphological and physiological traits. Although heritability estimates were significant for all traits, heritabilities were higher in traits relating to plant size and architecture than for physiological traits. Trait variation was largely explained by variety and breeding history (advanced versus landrace) but not by varietal groupings (indica, japonica, and aus). In the context of cellulosic biofuels development, cell wall composition varied significantly among varieties. Surprisingly, photosynthetic rates among the varieties were inversely correlated with biomass accumulation. Examining these data in an evolutionary context reveals that rice varieties have achieved high biomass production via independent developmental and physiological pathways, suggesting that there are multiple targets for biomass improvement. Future efforts to identify loci and networks underlying this functional variation will facilitate the improvement of biomass traits in other grasses being developed as energy crops. |
| format | Journal Article |
| id | CGSpace165984 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2011 |
| publishDateRange | 2011 |
| publishDateSort | 2011 |
| publisher | Oxford University Press |
| publisherStr | Oxford University Press |
| record_format | dspace |
| spelling | CGSpace1659842024-12-22T05:44:59Z Genetic variation in biomass traits among 20 diverse rice varieties Jahn, Courtney E. Mckay, John K. Mauleon, Ramil Stephens, Janice McNally, Kenneth L. Bush, Daniel R. Leung, Hei Leach, Jan E. biofuels biomass biomass production cell wall components cultivars genetic diversity genetic variation heritability loci photosynthesis photosynthetic rates traits varieties Biofuels provide a promising route of producing energy while reducing reliance on petroleum. Developing sustainable liquid fuel production from cellulosic feedstock is a major challenge and will require significant breeding efforts to maximize plant biomass production. Our approach to elucidating genes and genetic pathways that can be targeted for improving biomass production is to exploit the combination of genomic tools and genetic diversity in rice (Oryza sativa). In this study, we analyzed a diverse set of 20 recently resequenced rice varieties for variation in biomass traits at several different developmental stages. The traits included plant size and architecture, aboveground biomass, and underlying physiological processes. We found significant genetic variation among the 20 lines in all morphological and physiological traits. Although heritability estimates were significant for all traits, heritabilities were higher in traits relating to plant size and architecture than for physiological traits. Trait variation was largely explained by variety and breeding history (advanced versus landrace) but not by varietal groupings (indica, japonica, and aus). In the context of cellulosic biofuels development, cell wall composition varied significantly among varieties. Surprisingly, photosynthetic rates among the varieties were inversely correlated with biomass accumulation. Examining these data in an evolutionary context reveals that rice varieties have achieved high biomass production via independent developmental and physiological pathways, suggesting that there are multiple targets for biomass improvement. Future efforts to identify loci and networks underlying this functional variation will facilitate the improvement of biomass traits in other grasses being developed as energy crops. 2011-01-03 2024-12-19T12:55:44Z 2024-12-19T12:55:44Z Journal Article https://hdl.handle.net/10568/165984 en Open Access Oxford University Press Jahn, Courtney E.; Mckay, John K.; Mauleon, Ramil; Stephens, Janice; McNally, Kenneth L.; Bush, Daniel R.; Leung, Hei and Leach, Jan E. 2011. Genetic variation in biomass traits among 20 diverse rice varieties. |
| spellingShingle | biofuels biomass biomass production cell wall components cultivars genetic diversity genetic variation heritability loci photosynthesis photosynthetic rates traits varieties Jahn, Courtney E. Mckay, John K. Mauleon, Ramil Stephens, Janice McNally, Kenneth L. Bush, Daniel R. Leung, Hei Leach, Jan E. Genetic variation in biomass traits among 20 diverse rice varieties |
| title | Genetic variation in biomass traits among 20 diverse rice varieties |
| title_full | Genetic variation in biomass traits among 20 diverse rice varieties |
| title_fullStr | Genetic variation in biomass traits among 20 diverse rice varieties |
| title_full_unstemmed | Genetic variation in biomass traits among 20 diverse rice varieties |
| title_short | Genetic variation in biomass traits among 20 diverse rice varieties |
| title_sort | genetic variation in biomass traits among 20 diverse rice varieties |
| topic | biofuels biomass biomass production cell wall components cultivars genetic diversity genetic variation heritability loci photosynthesis photosynthetic rates traits varieties |
| url | https://hdl.handle.net/10568/165984 |
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