A greenhouse method to screen brachiariagrass genotypes for aluminum resistance and root vigor
Brachiaria species are widely sown on the infertile and Al-toxic soils of neotropical savannas. Breeding programs seek to combine edaphic adaptation with other traits in interspecific hybrids. Edaphic adaptation is difficult to assess because it is only manifest in pasture persistence across several...
| Main Authors: | , , , , , , |
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| Format: | Journal Article |
| Language: | Inglés |
| Published: |
2006
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10568/42527 |
| _version_ | 1855524757270691840 |
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| author | Wenzl, Peter Arango Vélez, Adriana Chavez, Alba L. Buitrago González, M.E. Patino, GM Miles, John W. Rao, Idupulapati M. |
| author_browse | Arango Vélez, Adriana Buitrago González, M.E. Chavez, Alba L. Miles, John W. Patino, GM Rao, Idupulapati M. Wenzl, Peter |
| author_facet | Wenzl, Peter Arango Vélez, Adriana Chavez, Alba L. Buitrago González, M.E. Patino, GM Miles, John W. Rao, Idupulapati M. |
| author_sort | Wenzl, Peter |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Brachiaria species are widely sown on the infertile and Al-toxic soils of neotropical savannas. Breeding programs seek to combine edaphic adaptation with other traits in interspecific hybrids. Edaphic adaptation is difficult to assess because it is only manifest in pasture persistence across several growing seasons. We developed and validated a solution-culture technique that uses rooted vegetative propagules from mature plants to assess two key components of edaphic adaptation: root vigor and Al resistance. Root vigor was assessed by measuring growth of adventitious root systems in 200 ?M CaCl2 (pH 4.2). Aluminum resistance was assessed by comparing root growth in this solution vs. root growth in an identical solution that also contained 200 ?M AlCl3 The well-adapted parent (Brachiaria decumbens Stapf cv. Basilisk) was superior to the less-adapted parent (B. ruziziensis Germain & Evrad clone 44-02), and both traits segregated as expected in a set of 44-02 × Basilisk hybrids. A simplified version of this technique, which exclusively relies on visual inspection, has been implemented in our breeding program to facilitate progress toward edaphic adaptation. |
| format | Journal Article |
| id | CGSpace42527 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2006 |
| publishDateRange | 2006 |
| publishDateSort | 2006 |
| record_format | dspace |
| spelling | CGSpace425272025-11-12T05:55:21Z A greenhouse method to screen brachiariagrass genotypes for aluminum resistance and root vigor Wenzl, Peter Arango Vélez, Adriana Chavez, Alba L. Buitrago González, M.E. Patino, GM Miles, John W. Rao, Idupulapati M. feed crops feed grasses brachiaria plant breeding adaptation hybrids acid soils aluminium culture media adventitious roots gramíneas forrajeras fitomejoramiento adaptación híbridos suelo ácido aluminio medio de cultivo raíces adventicias Brachiaria species are widely sown on the infertile and Al-toxic soils of neotropical savannas. Breeding programs seek to combine edaphic adaptation with other traits in interspecific hybrids. Edaphic adaptation is difficult to assess because it is only manifest in pasture persistence across several growing seasons. We developed and validated a solution-culture technique that uses rooted vegetative propagules from mature plants to assess two key components of edaphic adaptation: root vigor and Al resistance. Root vigor was assessed by measuring growth of adventitious root systems in 200 ?M CaCl2 (pH 4.2). Aluminum resistance was assessed by comparing root growth in this solution vs. root growth in an identical solution that also contained 200 ?M AlCl3 The well-adapted parent (Brachiaria decumbens Stapf cv. Basilisk) was superior to the less-adapted parent (B. ruziziensis Germain & Evrad clone 44-02), and both traits segregated as expected in a set of 44-02 × Basilisk hybrids. A simplified version of this technique, which exclusively relies on visual inspection, has been implemented in our breeding program to facilitate progress toward edaphic adaptation. 2006 2014-09-24T07:58:09Z 2014-09-24T07:58:09Z Journal Article https://hdl.handle.net/10568/42527 en Open Access application/pdf |
| spellingShingle | feed crops feed grasses brachiaria plant breeding adaptation hybrids acid soils aluminium culture media adventitious roots gramíneas forrajeras fitomejoramiento adaptación híbridos suelo ácido aluminio medio de cultivo raíces adventicias Wenzl, Peter Arango Vélez, Adriana Chavez, Alba L. Buitrago González, M.E. Patino, GM Miles, John W. Rao, Idupulapati M. A greenhouse method to screen brachiariagrass genotypes for aluminum resistance and root vigor |
| title | A greenhouse method to screen brachiariagrass genotypes for aluminum resistance and root vigor |
| title_full | A greenhouse method to screen brachiariagrass genotypes for aluminum resistance and root vigor |
| title_fullStr | A greenhouse method to screen brachiariagrass genotypes for aluminum resistance and root vigor |
| title_full_unstemmed | A greenhouse method to screen brachiariagrass genotypes for aluminum resistance and root vigor |
| title_short | A greenhouse method to screen brachiariagrass genotypes for aluminum resistance and root vigor |
| title_sort | greenhouse method to screen brachiariagrass genotypes for aluminum resistance and root vigor |
| topic | feed crops feed grasses brachiaria plant breeding adaptation hybrids acid soils aluminium culture media adventitious roots gramíneas forrajeras fitomejoramiento adaptación híbridos suelo ácido aluminio medio de cultivo raíces adventicias |
| url | https://hdl.handle.net/10568/42527 |
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