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Registros recuperados : 2 | |
Registros recuperados : 2 | |
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Registro Completo
Biblioteca(s): |
Embrapa Caprinos e Ovinos. |
Data corrente: |
29/11/2023 |
Data da última atualização: |
29/11/2023 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
A - 3 |
Autoria: |
MARTINS, C. T. V. D.; NASCIMENTO, T. L. do; BUENO, L. G.; ANTONIO, R. P.; BORGES, R. M. E.; MELO, N. F. de. |
Afiliação: |
CARLA 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. |
Título: |
Urochloa mosambicensis in the Brazilian semi‐arid region: morpho‐agronomic characterization of accessions under restricted climatic conditions. |
Ano de publicação: |
2023 |
Fonte/Imprenta: |
Genetic Resources and Crop Evolution, Nov. 2023. |
DOI: |
https://doi.org/10.1007/s10722-023-01797-0 |
Idioma: |
Inglês |
Notas: |
On line. |
Conteúdo: |
The 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. MenosThe 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. T... Mostrar Tudo |
Palavras-Chave: |
Breeding programmes; Capim-sinal bushveld; Genetic divergence; Grama nativa; Productivity; Produtividade de matéria seca; Recursos fitogenéticos; Semiárido. |
Thesagro: |
Capim Urochloa; Forragem; Genética Vegetal; Genótipo; Gramínea Forrageira; Pastagem; Recurso Genético; Urochloa Mosambicensis. |
Thesaurus NAL: |
Brazil; Dry matter content; Forage grasses; Plant genetic resources; Semiarid soils. |
Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/1158880/1/CNPC-2023-Urochloa-mosambicensis-in-the-Brazilian.pdf
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Marc: |
LEADER 03027naa a2200457 a 4500 001 2158880 005 2023-11-29 008 2023 bl uuuu u00u1 u #d 024 7 $ahttps://doi.org/10.1007/s10722-023-01797-0$2DOI 100 1 $aMARTINS, C. T. V. D. 245 $aUrochloa mosambicensis in the Brazilian semi‐arid region$bmorpho‐agronomic characterization of accessions under restricted climatic conditions.$h[electronic resource] 260 $c2023 500 $aOn line. 520 $aThe 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. 650 $aBrazil 650 $aDry matter content 650 $aForage grasses 650 $aPlant genetic resources 650 $aSemiarid soils 650 $aCapim Urochloa 650 $aForragem 650 $aGenética Vegetal 650 $aGenótipo 650 $aGramínea Forrageira 650 $aPastagem 650 $aRecurso Genético 650 $aUrochloa Mosambicensis 653 $aBreeding programmes 653 $aCapim-sinal bushveld 653 $aGenetic divergence 653 $aGrama nativa 653 $aProductivity 653 $aProdutividade de matéria seca 653 $aRecursos fitogenéticos 653 $aSemiárido 700 1 $aNASCIMENTO, T. L. do 700 1 $aBUENO, L. G. 700 1 $aANTONIO, R. P. 700 1 $aBORGES, R. M. E. 700 1 $aMELO, N. F. de 773 $tGenetic Resources and Crop Evolution, Nov. 2023.
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Embrapa Caprinos e Ovinos (CNPC) |
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