Effect of dry heat on seed germination of Desmodium and Stylosanthes species

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dc.creatorSalazar, Daniel E.
dc.creatorSantos, Luís Guillermo
dc.creatorWenzl, Peter
dc.creatorHay, Fiona R.
dc.date2020-12-31
dc.date2020-12-04T21:10:33Z
dc.date2020-12-04T21:10:33Z
dc.date.accessioned2026-06-27T14:45:35Z
dc.descriptionMechanical 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.
dc.formatapplication/pdf
dc.identifierhttps://hdl.handle.net/10568/110411
dc.identifier.urihttp://hdl.handle.net/123456789/87638
dc.languageen
dc.publisherInternational Seed Testing Association
dc.rightsOpen Access
dc.sourceSalazar, 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
dc.subjectdesmodium
dc.subjectstylosanthes
dc.subjecttratamiento de semillas
dc.subjectseed treatment
dc.subjectbanco de genes
dc.subjectgene bank
dc.subjectdormicion
dc.subjectdormancy
dc.subjectgerminacion de las semillas
dc.subjectseed germination
dc.subjectviabilidad
dc.subjectviability
dc.titleEffect of dry heat on seed germination of Desmodium and Stylosanthes species
dc.typeJournal Article

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Centro Internacional de Agricultura Tropical (CIAT)