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| 155. |  | GODOY, R.; BACCHI, O. O. S.; MOREIRA, F. A.; SANTOS, P. M. Inibição do crescimento radicular de plântulas de guandu (cajanus cajan (L.). Millps) causada pela compactação de solos. In: CONGRESSO BRASILEIRO DE FISIOLOGIA VEGETAL, 11., 2007, Brazilian Journal of Plant Physiology, v. 19, supl., 2007.| Biblioteca(s): Embrapa Pecuária Sudeste. |
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| 159. | | PEZZOPANE, C. de G.; SANTOS, P. M.; LIMA, A. G.; CRUZ, P. G. da. Acessos do gênero Paspalum avaliados quanto à tolerância ao estresse abiótico causado por alagamento. In: JORNADA CIENTÍFICA - EMBRAPA SÃO CARLOS, 6., 2014, São Carlos, SP. Anais... São Carlos: Embrapa Instrumentação: Embrapa Pecuária Sudeste, 2014. p. 30. (Embrapa Instrumentação. Documentos, 57) Editores técnicos: João de Mendonça Naime, Caue Ribeiro, Maria Alice Martins, Elaine Cristina Paris, Paulino Ribeiro Villas Boas, Ladislau Marcelino Rabello.| Biblioteca(s): Embrapa Pecuária Sudeste. |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Pecuária Sudeste. Para informações adicionais entre em contato com cppse.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Pecuária Sudeste. |
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Data corrente: |
13/09/2018 |
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Data da última atualização: |
03/01/2019 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 1 |
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Autoria: |
BELONI, T.; SANTOS, P. M.; ROVADOSCKI, G. A.; BALACHOWSKI, J.; VOLAIRE, F. |
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Afiliação: |
Tatiane Beloni, USP; PATRICIA MENEZES SANTOS, CPPSE; Gregori Alberto Rovadoscki, USP; Jennifer Balachowski, University of California; Florence Volaire, Univ Paul Valéry Montpellier. |
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Título: |
Large variability in drought survival among Urochloa spp. cultivars. |
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Ano de publicação: |
2018 |
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Fonte/Imprenta: |
Grass and Forage Science, p. 1-11, 2018. |
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DOI: |
https://doi.org/10.1111/gfs.12380 |
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Idioma: |
Português |
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Conteúdo: |
The Urochloa spp. cultivars are largely used for forage production in tropical and humid subtropical zones in Brazil. However, in areas of transition to drier zones, the persistence of Urochloa cultivars may be jeopardized by severe drought. We aimed to quantify and describe variability in growth potential under irrigation as well as dehydration tolerance and avoidance in cultivars under severe drought of Urochloa C4 species (Urochloa brizantha, cvs. Marandu and BRS Paiaguás and Urochloa decumbens cv. Basilisk), which were hypothesized to be less dehydration tolerant than a Mediterranean C3 species (Dactylis glomerata L. cv. Medly). Two experiments were carried out in a controlled environment?one in pots and one in long tubes?each under irrigation and drought successively. Marandu and Basilisk cultivars produced double the aerial and root biomass of cv. BRS Paiaguás. Their root systems were also deeper conferring them higher dehydration avoidance; however, they exhibited lower dehydration tolerance under severe drought. Conversely, cv. BRS Paiaguás was less productive, more dehydration tolerant and, therefore, able to survive at lower soil moisture, similar to the drought tolerant cv. Medly. The BRS Paiaguás cultivar may show sward persistence where extreme drought is experienced, but results should be confirmed under field conditions. |
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Palavras-Chave: |
Drought resistance. |
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Thesagro: |
Capim Urochloa; Resistência a Seca. |
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Thesaurus NAL: |
Root growth; Tropical pastures; Urochloa brizantha. |
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Categoria do assunto: |
A Sistemas de Cultivo |
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Marc: |
LEADER 02091naa a2200253 a 4500
001 2095571
005 2019-01-03
008 2018 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1111/gfs.12380$2DOI
100 1 $aBELONI, T.
245 $aLarge variability in drought survival among Urochloa spp. cultivars.$h[electronic resource]
260 $c2018
520 $aThe Urochloa spp. cultivars are largely used for forage production in tropical and humid subtropical zones in Brazil. However, in areas of transition to drier zones, the persistence of Urochloa cultivars may be jeopardized by severe drought. We aimed to quantify and describe variability in growth potential under irrigation as well as dehydration tolerance and avoidance in cultivars under severe drought of Urochloa C4 species (Urochloa brizantha, cvs. Marandu and BRS Paiaguás and Urochloa decumbens cv. Basilisk), which were hypothesized to be less dehydration tolerant than a Mediterranean C3 species (Dactylis glomerata L. cv. Medly). Two experiments were carried out in a controlled environment?one in pots and one in long tubes?each under irrigation and drought successively. Marandu and Basilisk cultivars produced double the aerial and root biomass of cv. BRS Paiaguás. Their root systems were also deeper conferring them higher dehydration avoidance; however, they exhibited lower dehydration tolerance under severe drought. Conversely, cv. BRS Paiaguás was less productive, more dehydration tolerant and, therefore, able to survive at lower soil moisture, similar to the drought tolerant cv. Medly. The BRS Paiaguás cultivar may show sward persistence where extreme drought is experienced, but results should be confirmed under field conditions.
650 $aRoot growth
650 $aTropical pastures
650 $aUrochloa brizantha
650 $aCapim Urochloa
650 $aResistência a Seca
653 $aDrought resistance
700 1 $aSANTOS, P. M.
700 1 $aROVADOSCKI, G. A.
700 1 $aBALACHOWSKI, J.
700 1 $aVOLAIRE, F.
773 $tGrass and Forage Science, p. 1-11, 2018.
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