A greenhouse method to screen brachiariagrass genotypes for aluminum resistance and root vigor

Vista sencilla de ítem
dc.creatorWenzl, Peter
dc.creatorArango Vélez, Adriana
dc.creatorChavez, Alba L.
dc.creatorBuitrago González, M.E.
dc.creatorPatino, GM
dc.creatorMiles, John W.
dc.creatorRao, Idupulapati M.
dc.date2006
dc.date2014-09-24T07:58:09Z
dc.date2014-09-24T07:58:09Z
dc.date.accessioned2026-06-27T14:38:50Z
dc.descriptionBrachiaria 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.
dc.formatapplication/pdf
dc.identifierhttps://hdl.handle.net/10568/42527
dc.identifier.urihttp://hdl.handle.net/123456789/84293
dc.languageen
dc.rightsOpen Access
dc.sourceWenzl, Peter; Arango Vélez, Adriana; Chavez, Alba L.; Buitrago González, M.E.; Patino, GM; Miles, John W.; and Rao, Idupulapati M. 2006. A Greenhouse Method to Screen Brachiariagrass Genotypes for Aluminum Resistance and Root Vigor. Crop Science. 46(2): 968-973. https://doi.org/10.2135/cropsci2005.07.0209
dc.subjectfeed crops
dc.subjectfeed grasses
dc.subjectbrachiaria
dc.subjectplant breeding
dc.subjectadaptation
dc.subjecthybrids
dc.subjectacid soils
dc.subjectaluminium
dc.subjectculture media
dc.subjectadventitious roots
dc.subjectgramíneas forrajeras
dc.subjectfitomejoramiento
dc.subjectadaptación
dc.subjecthíbridos
dc.subjectsuelo ácido
dc.subjectaluminio
dc.subjectmedio de cultivo
dc.subjectraíces adventicias
dc.titleA greenhouse method to screen brachiariagrass genotypes for aluminum resistance and root vigor
dc.typeJournal Article

Archivos

Colecciones

Centro Internacional de Agricultura Tropical (CIAT)