Effect of dry heat on seed germination of Desmodium and Stylosanthes species
Mechanical scarification with a scalpel is the best treatment to break physical dormancy and reach high germination percentages in many legumes. However, it is highly time-consuming. Given the ecological relationship between the presence of physical dormancy and high temperatures in tropical grassl...
| Autores principales: | , , , |
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| Formato: | Journal Article |
| Lenguaje: | Inglés |
| Publicado: |
International Seed Testing Association
2020
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| Materias: | |
| Acceso en línea: | https://hdl.handle.net/10568/110411 |
| _version_ | 1855531896199446528 |
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| author | Salazar, Daniel E. Santos, Luís Guillermo Wenzl, Peter Hay, Fiona R. |
| author_browse | Hay, Fiona R. Salazar, Daniel E. Santos, Luís Guillermo Wenzl, Peter |
| author_facet | Salazar, Daniel E. Santos, Luís Guillermo Wenzl, Peter Hay, Fiona R. |
| author_sort | Salazar, Daniel E. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Mechanical scarification with a scalpel is the best treatment to break physical dormancy and reach high germination percentages in many legumes. However, it is highly time-consuming. Given the ecological relationship between the presence of physical dormancy and high temperatures in tropical grasslands, dry heat treatment could also promote breaking of physical dormancy in Desmodium and Stylosanthes species. This study assessed seed germination of several accessions of nine species of Desmodium and Stylosanthes. Seeds were treated with dry heat (80°C for 30 minutes) and scarified with a scalpel to determine whether dry heat is a reliable alternative treatment to overcome physical dormancy. Mechanical scarification with a scalpel was effective and resulted in high germination for all species. In S. guianensis, both treatments had an equivalent effect, making dry heat a feasible alternative. Dry heat could also be a reliable alternative in D. heterocarpon, D. velutinum, S. hamata, and S. scabra, but tetrazolium tests may be necessary to confirm viability. For D. barbatum and D. scorpiurus, dry heat could be an alternative but further research is needed to confirm this, while in S. capitata and S. viscosa dry heat is not a reliable alternative. |
| format | Journal Article |
| id | CGSpace110411 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2020 |
| publishDateRange | 2020 |
| publishDateSort | 2020 |
| publisher | International Seed Testing Association |
| publisherStr | International Seed Testing Association |
| record_format | dspace |
| spelling | CGSpace1104112025-11-11T18:55:27Z Effect of dry heat on seed germination of Desmodium and Stylosanthes species Salazar, Daniel E. Santos, Luís Guillermo Wenzl, Peter Hay, Fiona R. desmodium stylosanthes tratamiento de semillas seed treatment banco de genes gene bank dormicion dormancy germinacion de las semillas seed germination viabilidad viability Mechanical scarification with a scalpel is the best treatment to break physical dormancy and reach high germination percentages in many legumes. However, it is highly time-consuming. Given the ecological relationship between the presence of physical dormancy and high temperatures in tropical grasslands, dry heat treatment could also promote breaking of physical dormancy in Desmodium and Stylosanthes species. This study assessed seed germination of several accessions of nine species of Desmodium and Stylosanthes. Seeds were treated with dry heat (80°C for 30 minutes) and scarified with a scalpel to determine whether dry heat is a reliable alternative treatment to overcome physical dormancy. Mechanical scarification with a scalpel was effective and resulted in high germination for all species. In S. guianensis, both treatments had an equivalent effect, making dry heat a feasible alternative. Dry heat could also be a reliable alternative in D. heterocarpon, D. velutinum, S. hamata, and S. scabra, but tetrazolium tests may be necessary to confirm viability. For D. barbatum and D. scorpiurus, dry heat could be an alternative but further research is needed to confirm this, while in S. capitata and S. viscosa dry heat is not a reliable alternative. 2020-12-31 2020-12-04T21:10:33Z 2020-12-04T21:10:33Z Journal Article https://hdl.handle.net/10568/110411 en Open Access application/pdf International Seed Testing Association Salazar, D.E.; Santos, L.G.; Wenzl, P.; Hay, F.R. 2020. Effect of dry heat on seed germination of Desmodium and Stylosanthes species. Seed Science and Technology 48(3):419-437 |
| spellingShingle | desmodium stylosanthes tratamiento de semillas seed treatment banco de genes gene bank dormicion dormancy germinacion de las semillas seed germination viabilidad viability Salazar, Daniel E. Santos, Luís Guillermo Wenzl, Peter Hay, Fiona R. Effect of dry heat on seed germination of Desmodium and Stylosanthes species |
| title | Effect of dry heat on seed germination of Desmodium and Stylosanthes species |
| title_full | Effect of dry heat on seed germination of Desmodium and Stylosanthes species |
| title_fullStr | Effect of dry heat on seed germination of Desmodium and Stylosanthes species |
| title_full_unstemmed | Effect of dry heat on seed germination of Desmodium and Stylosanthes species |
| title_short | Effect of dry heat on seed germination of Desmodium and Stylosanthes species |
| title_sort | effect of dry heat on seed germination of desmodium and stylosanthes species |
| topic | desmodium stylosanthes tratamiento de semillas seed treatment banco de genes gene bank dormicion dormancy germinacion de las semillas seed germination viabilidad viability |
| url | https://hdl.handle.net/10568/110411 |
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