Use este identificador para citar ou linkar para este item: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1158880
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dc.contributor.authorMARTINS, C. T. V. D.
dc.contributor.authorNASCIMENTO, T. L. do
dc.contributor.authorBUENO, L. G.
dc.contributor.authorANTONIO, R. P.
dc.contributor.authorBORGES, R. M. E.
dc.contributor.authorMELO, N. F. de
dc.date.accessioned2023-11-29T17:32:12Z-
dc.date.available2023-11-29T17:32:12Z-
dc.date.created2023-11-29
dc.date.issued2023
dc.identifier.citationGenetic Resources and Crop Evolution, Nov. 2023.
dc.identifier.urihttp://www.alice.cnptia.embrapa.br/alice/handle/doc/1158880-
dc.descriptionThe objective of this study was to morpho-agronomically characterize Urochloa sp. accessions from the forage collection of Embrapa Caprinos e Ovinos, aiming to identify the most divergent accessions to support the selection of materials better adapted to cultivation under semi-arid conditions. Fifteen Urochloa sp. accessions were used in a randomized block design with three replications and eight plants per plot, with a spacing of 0.5 m between plants and 0.5 m between rows. A uniformization cut (60 days after transplantation) was performed, followed by two subsequent cuts at intervals of 60 days, starting from the uniformization cut. The morphological characterization was initiated 12 days after the uniformization cut. The characterization of the accessions was performed based on 24 quantitative and qualitative morpho-agronomic descriptors of Brachiaria. The evaluations of fresh and dry matter productivity were performed following the two subsequent cuts after the uniformization cut. After completing these evaluations, a water defcit tolerance assessment was also conducted. The quantitative descriptors were subjected to analysis of variance, considering the two cuts. The obtained data were analyzed, and ten groups were formed, with the accessions UmCO-11 (2) and UmCO-2 (2) showing the highest genetic divergence. In conclusion, high variability was observed among the evaluated Urochloa accessions, which may indicate their potential for incorporation into breeding programs. The identifcation of genotypes tolerant to water defcit stress is of great value for ensuring productivity and the perenniality of pasture.
dc.language.isoeng
dc.rightsopenAccess
dc.subjectProdutividade de matéria seca
dc.subjectRecursos fitogenéticos
dc.subjectCapim-sinal bushveld
dc.subjectGrama nativa
dc.subjectSemiárido
dc.subjectProductivity
dc.subjectGenetic divergence
dc.subjectBreeding programmes
dc.titleUrochloa mosambicensis in the Brazilian semi‐arid region: morpho‐agronomic characterization of accessions under restricted climatic conditions.
dc.typeArtigo de periódico
dc.subject.thesagroGramínea Forrageira
dc.subject.thesagroCapim Urochloa
dc.subject.thesagroUrochloa Mosambicensis
dc.subject.thesagroForragem
dc.subject.thesagroPastagem
dc.subject.thesagroGenótipo
dc.subject.thesagroRecurso Genético
dc.subject.thesagroGenética Vegetal
dc.subject.nalthesaurusForage grasses
dc.subject.nalthesaurusDry matter content
dc.subject.nalthesaurusPlant genetic resources
dc.subject.nalthesaurusSemiarid soils
dc.subject.nalthesaurusBrazil
dc.description.notesOn line.
riaa.ainfo.id1158880
riaa.ainfo.lastupdate2023-11-29
dc.identifier.doihttps://doi.org/10.1007/s10722-023-01797-0
dc.contributor.institutionCARLA TATIANA VASCONCELOS DIAS MARTINS, Universidade Estadual de Feira de Santana; TIAGO LIMA DO NASCIMENTO, Bolsista FACEPE; LUICE GOMES BUENO GALVANI, CNPC; RAFAELA PRISCILA ANTONIO, CPATSA; RITA MERCIA ESTIGARRIBIA B FAUSTINO, CPATSA; NATONIEL FRANKLIN DE MELO, CPATSA.
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