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Registro Completo |
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Biblioteca(s): |
Epagri-Sede. |
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Data corrente: |
01/04/2013 |
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Data da última atualização: |
01/04/2013 |
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Tipo da produção científica: |
Resumo em Anais de Congresso |
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Autoria: |
FLESCH, R. D.; ZANATTA, J. C. |
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Afiliação: |
Epagri |
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Título: |
Recomendações para o plantio de milho. |
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Ano de publicação: |
2001 |
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Fonte/Imprenta: |
Correio Lageano, Suplemento Rural, Lages, SC, 6 nov. 2001. |
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Idioma: |
Português |
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Conteúdo: |
Está chegando a época de implantar as lavouras de milho e o agricultor já deve estar pensando no melhor momento de semear o milho. A temperatura do ar e do solo são importantes fatores a se observar, bom como a escolha das cultivares, densidade de plantio e espaçamento. |
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Palavras-Chave: |
Milho; Trato cultural; Variedade. |
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Categoria do assunto: |
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Marc: |
LEADER 00707naa a2200169 a 4500
001 1088793
005 2013-04-01
008 2001 bl uuuu u00u1 u #d
100 1 $aFLESCH, R. D.
245 $aRecomendações para o plantio de milho.
260 $c2001
520 $aEstá chegando a época de implantar as lavouras de milho e o agricultor já deve estar pensando no melhor momento de semear o milho. A temperatura do ar e do solo são importantes fatores a se observar, bom como a escolha das cultivares, densidade de plantio e espaçamento.
653 $aMilho
653 $aTrato cultural
653 $aVariedade
700 1 $aZANATTA, J. C.
773 $tCorreio Lageano, Suplemento Rural, Lages, SC, 6 nov. 2001.
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Epagri-Sede (Epagri-Sede) |
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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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