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Registro Completo |
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Biblioteca(s): |
Epagri-Sede. |
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Data corrente: |
29/03/2021 |
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Data da última atualização: |
29/03/2021 |
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Tipo da produção científica: |
Artigo em Anais de Congresso / Nota Técnica |
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Autoria: |
PIVETA, L. B.; NOLDIN, J. A.; BURGOS, N. R.; VIANA, V. E.; BENEDETTI, L.; PINTO, J. J. O.; LAMEGO, F. P.; AVILA, L. A. |
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Título: |
Weedy Rice Diversity in Southern Brazil. |
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Ano de publicação: |
2021 |
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Fonte/Imprenta: |
Weed Science, Cambridge, UK, v.69 , n.2 , p. 1-37, 2021. |
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Idioma: |
Inglês |
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Conteúdo: |
Weedy rice (Oryza sativa L.) is one of the most troublesome weeds affecting rice (Oryza sativa L.) production in many countries. Weedy rice control is difficult in rice fields because the weed and crop are phenotypically and morphologically similar. Weedy rice can be a source of genetic diversity to cultivated rice. Thus, this study aimed to characterize the morphological diversity of weedy rice in Southern Brazil. Qualitative and quantitative traits of 249 accessions from eight rice growing mesoregions in Rio Grande do Sul (RS) and Santa Catarina (SC) states were analyzed. For each accession, 24 morphological descriptors (14 qualitative and 10 quantitative) were evaluated. All the 249 accessions from RS and SC are of indica lineage. Considering all the phenotypic traits evaluated, the accessions separated into 14 distinct groups. One of the largest groups consisted of plants that were predominantly tall and with green leaves, intermediate shattering, and variable in flowering time. Distinct subgroups exist within larger clusters, showing discernable phenotypic diversity within the main clusters. The variability in flowering time was high (77 to 110 d after emergence), indicating high potential for flowering synchrony with rice cultivars and, consequently, gene flow. This indicates the need to remove escapes when
planting herbicide-resistant rice. Thus, weedy rice populations in Southern Brazil are highly diverse and this diversity could result in variable response to weed management. MenosWeedy rice (Oryza sativa L.) is one of the most troublesome weeds affecting rice (Oryza sativa L.) production in many countries. Weedy rice control is difficult in rice fields because the weed and crop are phenotypically and morphologically similar. Weedy rice can be a source of genetic diversity to cultivated rice. Thus, this study aimed to characterize the morphological diversity of weedy rice in Southern Brazil. Qualitative and quantitative traits of 249 accessions from eight rice growing mesoregions in Rio Grande do Sul (RS) and Santa Catarina (SC) states were analyzed. For each accession, 24 morphological descriptors (14 qualitative and 10 quantitative) were evaluated. All the 249 accessions from RS and SC are of indica lineage. Considering all the phenotypic traits evaluated, the accessions separated into 14 distinct groups. One of the largest groups consisted of plants that were predominantly tall and with green leaves, intermediate shattering, and variable in flowering time. Distinct subgroups exist within larger clusters, showing discernable phenotypic diversity within the main clusters. The variability in flowering time was high (77 to 110 d after emergence), indicating high potential for flowering synchrony with rice cultivars and, consequently, gene flow. This indicates the need to remove escapes when
planting herbicide-resistant rice. Thus, weedy rice populations in Southern Brazil are highly diverse and this diversity could result in variable response to weed m... Mostrar Tudo |
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Palavras-Chave: |
cluster analysis; morphological characterization; phenological diversity; plant traits; red rice. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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Marc: |
LEADER 02235naa a2200265 a 4500
001 1130699
005 2021-03-29
008 2021 bl uuuu u00u1 u #d
100 1 $aPIVETA, L. B.
245 $aWeedy Rice Diversity in Southern Brazil.$h[electronic resource]
260 $c2021
520 $aWeedy rice (Oryza sativa L.) is one of the most troublesome weeds affecting rice (Oryza sativa L.) production in many countries. Weedy rice control is difficult in rice fields because the weed and crop are phenotypically and morphologically similar. Weedy rice can be a source of genetic diversity to cultivated rice. Thus, this study aimed to characterize the morphological diversity of weedy rice in Southern Brazil. Qualitative and quantitative traits of 249 accessions from eight rice growing mesoregions in Rio Grande do Sul (RS) and Santa Catarina (SC) states were analyzed. For each accession, 24 morphological descriptors (14 qualitative and 10 quantitative) were evaluated. All the 249 accessions from RS and SC are of indica lineage. Considering all the phenotypic traits evaluated, the accessions separated into 14 distinct groups. One of the largest groups consisted of plants that were predominantly tall and with green leaves, intermediate shattering, and variable in flowering time. Distinct subgroups exist within larger clusters, showing discernable phenotypic diversity within the main clusters. The variability in flowering time was high (77 to 110 d after emergence), indicating high potential for flowering synchrony with rice cultivars and, consequently, gene flow. This indicates the need to remove escapes when planting herbicide-resistant rice. Thus, weedy rice populations in Southern Brazil are highly diverse and this diversity could result in variable response to weed management.
653 $acluster analysis
653 $amorphological characterization
653 $aphenological diversity
653 $aplant traits
653 $ared rice
700 1 $aNOLDIN, J. A.
700 1 $aBURGOS, N. R.
700 1 $aVIANA, V. E.
700 1 $aBENEDETTI, L.
700 1 $aPINTO, J. J. O.
700 1 $aLAMEGO, F. P.
700 1 $aAVILA, L. A.
773 $tWeed Science, Cambridge, UK$gv.69 , n.2 , p. 1-37, 2021.
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Registro original: |
Epagri-Sede (Epagri-Sede) |
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| Registros recuperados : 3 | |
| 1. |  | MELO, I. C.; PINTO, M. G. L.; ZACCARON, J.; COSTA, L. S.; MOURA, A. B.; SNAK, A.; RIBEIRO, L. R.; CUCCO, D. C.; CASAGRANDE, R. A. DETERMINAÇÃO DAS CAUSAS DE MORTE EMBRIONÁRIA E FETAL EM VACAS DA RAÇA FLAMENGA DA ESTAÇÃO EXPERIMENTAL DA EPAGRI DE LAGES, SANTA CATARINA. In: SEMINÁRIO DE INICIAÇÃO CIENTÍFICA, 29., 2019, Lages. Resumos... Florianópolis: UDESC, 2019.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Epagri-Sede. |
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| 2. | | RIBEIRO, L. R.; PINTO, M. G. L.; FAVARO, V. R.; MOURA, A. B.; COSTA, L. S.; MARIAN, L.; PEREIRA, D. G.; CASAGRANDE, R. A. DETERMINAÇÃO DAS CAUSAS DE MORTE EMBRIONÁRIA E FETAL EM VACAS DA RAÇA FLAMENGA DA ESTAÇÃO EXPERIMENTAL DA EPAGRI DE LAGES, SANTA CATARINA. In: SEMINÁRIO DE INICIAÇÃO CIENTÍFICA, 28., 2018, Lages. Resumos... Florianópolis: UDESC, 2018.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Epagri-Sede. |
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| 3. | | MARIAN, L.; WITHOEFT, J. A.; RIBEIRO, L. R.; MELO, I. C.; ALVES, R. S.; BAUMBACH, L. F.; SNAK, A.; PINTO, M. G. L.; MILETTI, L. C.; FERRAZ, S. M.; SFACIOTTE, R. A. P.; CANAL, C. W.; CASAGRANDE, R. A. Causes of fetal death in the Flemish cattle herd in Brazil. Veterinary World, India, v. 16, n. 4, p. 766-772, 2023.| Tipo: Artigo em Periódico Indexado |
| Biblioteca(s): Epagri-Sede. |
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| Registros recuperados : 3 | |
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