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Registro Completo |
Biblioteca(s): |
Embrapa Meio-Norte; Embrapa Milho e Sorgo. |
Data corrente: |
03/11/2021 |
Data da última atualização: |
04/11/2021 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
SOUZA, A. A. de; CARVALHO, A. J. de; BASTOS, E. A.; CARDOSO, M. J.; JÚLIO, M. P. M.; BATISTA, P. S. C.; JÚLIO, B. H. M.; CAMPOLINA, C. V.; PORTUGAL, A. F.; MENEZES, C. B. de; OLIVEIRA, S. M. de. |
Afiliação: |
ANDREY ANTUNES DE SOUZA, Universidade Estadual de Montes Claros; ABNER JOSÉ DE CARVALHO, Universidade Estadual de Montes Claros; EDSON ALVES BASTOS, Universidade Federal de São João del-Rei; MILTON JOSE CARDOSO, CPAMN; MARCOS PAULO MINGOTE JÚLIO, Universidade Federal de São João del-Rei; PAULO SÉRGIO CARDOSO BATISTA, Universidade Estadual de Montes Claros; BRUNO HENRIQUE MINGOTE JULIO, Universidade Federal de São João del-Rei; CARMELA VAZ CAMPOLINA, Universidade Federal de São João del-Rei; ARLEY FIGUEIREDO PORTUGAL, CNPMS; CICERO BESERRA DE MENEZES, CNPMS; SIMÔNICA MARIA DE OLIVEIRA, Universidade Estadual de Montes Claros. |
Título: |
Grain sorghum under pre- and post-flowering drought stress in a semiarid environment. |
Ano de publicação: |
2021 |
Fonte/Imprenta: |
Australian Journal of Crop Science, v. 15, n. 8, p. 1139-1145, 2021. |
Idioma: |
Inglês |
Conteúdo: |
Sorghum is one of the most drought-tolerant cereals. However, strong water stress, especially during the reproductive phase, causes
significant grain yield reduction. Drought events are common in second crops planted after soybean harvest in Brazil. The objective of the present study was to assess grain sorghum hybrids grown under pre- and post-flowering drought stress. Twenty-five hybrids were subjected to two water stress environments (pre- and post-flowering) and one environment with non-water stress. The experimental design was a split plot based on a randomized complete block with three replicates. Water stress pre-flowering reduced plant height, accelerated flowering, and increased panicle index compared with water stress post-flowering. Both pre- and postflowering stress reduced yield, by 45% and 48%, respectively. Grain mass was greatly affected by stress occurring post-flowering but not by that occurring pre-flowering. Therefore, the reduction in yield caused by pre-flowering stress is due more to the reduction of grain number in the panicle, whereas the reduction when stress occurs post-flowering is due more to reduction in grain size. The plant chlorophyll index decreased when stress occurred pre-flowering and reverted after irrigation had resumed, demonstrating recovery in the photosynthetic capacity of the sorghum plant. With post-flowering stress, the chlorophyll index decreased significantly 30 days after the stress, affecting grain filling, with consequent yield loss. MenosSorghum is one of the most drought-tolerant cereals. However, strong water stress, especially during the reproductive phase, causes
significant grain yield reduction. Drought events are common in second crops planted after soybean harvest in Brazil. The objective of the present study was to assess grain sorghum hybrids grown under pre- and post-flowering drought stress. Twenty-five hybrids were subjected to two water stress environments (pre- and post-flowering) and one environment with non-water stress. The experimental design was a split plot based on a randomized complete block with three replicates. Water stress pre-flowering reduced plant height, accelerated flowering, and increased panicle index compared with water stress post-flowering. Both pre- and postflowering stress reduced yield, by 45% and 48%, respectively. Grain mass was greatly affected by stress occurring post-flowering but not by that occurring pre-flowering. Therefore, the reduction in yield caused by pre-flowering stress is due more to the reduction of grain number in the panicle, whereas the reduction when stress occurs post-flowering is due more to reduction in grain size. The plant chlorophyll index decreased when stress occurred pre-flowering and reverted after irrigation had resumed, demonstrating recovery in the photosynthetic capacity of the sorghum plant. With post-flowering stress, the chlorophyll index decreased significantly 30 days after the stress, affecting grain filling, with consequent yi... Mostrar Tudo |
Palavras-Chave: |
Chlorophyll index; Estresse abiótico; Estresse hídrico; Índice de clorofila; Semiárido. |
Thesagro: |
Sorghum Bicolor; Sorgo Granífero. |
Thesaurus Nal: |
Abiotic stress; Water stress. |
Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/227387/1/Grain-sorghum-under.pdf
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Marc: |
LEADER 02532naa a2200349 a 4500 001 2135765 005 2021-11-04 008 2021 bl uuuu u00u1 u #d 100 1 $aSOUZA, A. A. de 245 $aGrain sorghum under pre- and post-flowering drought stress in a semiarid environment.$h[electronic resource] 260 $c2021 520 $aSorghum is one of the most drought-tolerant cereals. However, strong water stress, especially during the reproductive phase, causes significant grain yield reduction. Drought events are common in second crops planted after soybean harvest in Brazil. The objective of the present study was to assess grain sorghum hybrids grown under pre- and post-flowering drought stress. Twenty-five hybrids were subjected to two water stress environments (pre- and post-flowering) and one environment with non-water stress. The experimental design was a split plot based on a randomized complete block with three replicates. Water stress pre-flowering reduced plant height, accelerated flowering, and increased panicle index compared with water stress post-flowering. Both pre- and postflowering stress reduced yield, by 45% and 48%, respectively. Grain mass was greatly affected by stress occurring post-flowering but not by that occurring pre-flowering. Therefore, the reduction in yield caused by pre-flowering stress is due more to the reduction of grain number in the panicle, whereas the reduction when stress occurs post-flowering is due more to reduction in grain size. The plant chlorophyll index decreased when stress occurred pre-flowering and reverted after irrigation had resumed, demonstrating recovery in the photosynthetic capacity of the sorghum plant. With post-flowering stress, the chlorophyll index decreased significantly 30 days after the stress, affecting grain filling, with consequent yield loss. 650 $aAbiotic stress 650 $aWater stress 650 $aSorghum Bicolor 650 $aSorgo Granífero 653 $aChlorophyll index 653 $aEstresse abiótico 653 $aEstresse hídrico 653 $aÍndice de clorofila 653 $aSemiárido 700 1 $aCARVALHO, A. J. de 700 1 $aBASTOS, E. A. 700 1 $aCARDOSO, M. J. 700 1 $aJÚLIO, M. P. M. 700 1 $aBATISTA, P. S. C. 700 1 $aJÚLIO, B. H. M. 700 1 $aCAMPOLINA, C. V. 700 1 $aPORTUGAL, A. F. 700 1 $aMENEZES, C. B. de 700 1 $aOLIVEIRA, S. M. de 773 $tAustralian Journal of Crop Science$gv. 15, n. 8, p. 1139-1145, 2021.
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Embrapa Meio-Norte (CPAMN) |
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Biblioteca(s): |
Embrapa Florestas. |
Data corrente: |
05/11/2001 |
Data da última atualização: |
04/08/2014 |
Tipo da produção científica: |
Circular Técnica |
Autoria: |
GRIGOLETTI JUNIOR, A.; AUER, C. G.; SANTOS, A. F. dos. |
Afiliação: |
Pesquisadores da Embrapa Florestas. |
Título: |
Estrategias de manejo de doencas em viveiros florestais. |
Ano de publicação: |
2001 |
Fonte/Imprenta: |
Colombo: Embrapa Florestas, 2001. |
Páginas: |
6 p. |
Série: |
(Embrapa Florestas. Circular técnica, 47). |
ISSN: |
1517-5278 |
Idioma: |
Português |
Conteúdo: |
Este trabalho tem como objetivo discutir e apresentar sugestões nos aspectos relacinados ao manejo de doeças em viveiros florestais; Separação das mudas; Recipientes; Substrato; Irrigação; Seleção de mudas; Estresse; Drenagem; Sombreamento; Transplantio; Densidade de semeadura; Rustificação; Monitoramento. |
Palavras-Chave: |
Brasil; Colombo; Disease; Diseases; Doencas; Fitopatologia; Forest; Forest murseries; Management; Paraná; Pest insects; Seleção de muda; Selecao de mudas; Viveiros florestais. |
Thesagro: |
Controle Biológico; Controle Cultural; Doença; Doença de planta; Entomologia; Floresta; Irrigação; Manejo; Praga; Viveiro; Viveiro Florestal. |
Thesaurus NAL: |
biological control; crop management; forest management; forest nurseries; plant nurseries. |
Categoria do assunto: |
-- |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/CNPF-2009-09/15740/1/circ-tec47.pdf
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Marc: |
LEADER 01653nam a2200529 a 4500 001 1289927 005 2014-08-04 008 2001 bl uuuu u0uu1 u #d 022 $a1517-5278 100 1 $aGRIGOLETTI JUNIOR, A. 245 $aEstrategias de manejo de doencas em viveiros florestais. 260 $aColombo: Embrapa Florestas$c2001 300 $a6 p. 490 $a(Embrapa Florestas. Circular técnica, 47). 520 $aEste trabalho tem como objetivo discutir e apresentar sugestões nos aspectos relacinados ao manejo de doeças em viveiros florestais; Separação das mudas; Recipientes; Substrato; Irrigação; Seleção de mudas; Estresse; Drenagem; Sombreamento; Transplantio; Densidade de semeadura; Rustificação; Monitoramento. 650 $abiological control 650 $acrop management 650 $aforest management 650 $aforest nurseries 650 $aplant nurseries 650 $aControle Biológico 650 $aControle Cultural 650 $aDoença 650 $aDoença de planta 650 $aEntomologia 650 $aFloresta 650 $aIrrigação 650 $aManejo 650 $aPraga 650 $aViveiro 650 $aViveiro Florestal 653 $aBrasil 653 $aColombo 653 $aDisease 653 $aDiseases 653 $aDoencas 653 $aFitopatologia 653 $aForest 653 $aForest murseries 653 $aManagement 653 $aParaná 653 $aPest insects 653 $aSeleção de muda 653 $aSelecao de mudas 653 $aViveiros florestais 700 1 $aAUER, C. G. 700 1 $aSANTOS, A. F. dos
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