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Registro Completo |
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Biblioteca(s): |
Embrapa Semiárido. |
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Data corrente: |
10/01/2024 |
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Data da última atualização: |
10/01/2024 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
BARROS, J. R. A.; SILVA, E. G. F.; SANTOS, C. B. dos; SILVA, J. de A.; SILVA, W. O. da; OLIVEIRA, A. R. de; ANGELOTTI, F. |
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Afiliação: |
JULIANE RAFAELE ALVES BARROS, Fundação de Amparo à Ciência e Tecnologia do Estado de Pernambuco, Recife, PE; ELIOENAI GOMES FREIRE SILVA, UPE; CAMILA BARBOSA DOS SANTOS, UPE; JAQUELINE DE ALMEIDA SILVA, UPE; WESLLEY OLIVEIRA DA SILVA, Universidade Estadual de Feira de Santana, Feira de Santana, BA; ANDERSON RAMOS DE OLIVEIRA, CPATSA; FRANCISLENE ANGELOTTI, CPATSA. |
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Título: |
Initial establishment of cassava plants with increasing temperature. |
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Ano de publicação: |
2023 |
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Fonte/Imprenta: |
Revista de Ciências Agroveterinárias, v. 22, n. 4, p. 529-536, 2023. |
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ISSN: |
2238-1171) |
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DOI: |
10.5965/223811712242023529 |
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Idioma: |
Inglês |
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Conteúdo: |
Adverse environmental conditions, such as increased air temperature, have an impact on initial plant growth, interfering with the potential yield potential ofcrops. Thus, the objective was to evaluate the effect of increasing temperature on the initial establishment of cassava plants. The experiment was carried out in growth chambers, with a completely randomized design in a 3x2 factorial scheme (cultivars x temperature regimes), with five replications, for 165 days. Cassava seedlings of the cultivars BRS 417, BRS 420 and BRS CS01 were used and the temperature regimes: T1 (20-26-33 °C) and T2 (24.8-30.8-37.8 °C). The physiological parameters were negatively affected by the increase in temperature. These physiological changes resulted in an increase in leaf temperature. Cultivar BRS 420 had the highest stem diameter when compared to the others, with an average of 4.63 mm. The temperature regime of 24.8-30.8-37.8 °C contributed to greater plant height of cultivars BRS 420 and BRS CS01, with an average of 104.28 and 89.54 cm respectively. The increase in temperature also contributed to greater production of aboveground biomass, with an increase in fresh mass of 41% and 52% and dry mass of 20% and 37% for BRS 420 and BRS CS01, respectively. The fresh mass of the root system was greater with increasing temperature for the three cultivars analyzed, with emphasis on BRS 420, which also showed greater production of dry mass of the roots, regardless of the temperature regime. The increase in air temperature, with a daily regime of 24.8-30.8-37.8 °C favored the growth and development of young cassava plants, contributing to their establishment, even with changes in physiological responses MenosAdverse environmental conditions, such as increased air temperature, have an impact on initial plant growth, interfering with the potential yield potential ofcrops. Thus, the objective was to evaluate the effect of increasing temperature on the initial establishment of cassava plants. The experiment was carried out in growth chambers, with a completely randomized design in a 3x2 factorial scheme (cultivars x temperature regimes), with five replications, for 165 days. Cassava seedlings of the cultivars BRS 417, BRS 420 and BRS CS01 were used and the temperature regimes: T1 (20-26-33 °C) and T2 (24.8-30.8-37.8 °C). The physiological parameters were negatively affected by the increase in temperature. These physiological changes resulted in an increase in leaf temperature. Cultivar BRS 420 had the highest stem diameter when compared to the others, with an average of 4.63 mm. The temperature regime of 24.8-30.8-37.8 °C contributed to greater plant height of cultivars BRS 420 and BRS CS01, with an average of 104.28 and 89.54 cm respectively. The increase in temperature also contributed to greater production of aboveground biomass, with an increase in fresh mass of 41% and 52% and dry mass of 20% and 37% for BRS 420 and BRS CS01, respectively. The fresh mass of the root system was greater with increasing temperature for the three cultivars analyzed, with emphasis on BRS 420, which also showed greater production of dry mass of the roots, regardless of the temperature regime. The inc... Mostrar Tudo |
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Palavras-Chave: |
Aumento da temperatura. |
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Thesagro: |
Fotossíntese; Mandioca; Manihot Esculenta; Mudança Climática. |
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Thesaurus Nal: |
Cassava; Climate change; Manihot; Photosynthesis. |
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Categoria do assunto: |
X Pesquisa, Tecnologia e Engenharia |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/1160641/1/Initial-establishment-of-cassava-plants-with-increasing-temperature-Mandioca-Mundaca-climatica.pdf
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Marc: |
LEADER 02643naa a2200325 a 4500
001 2160641
005 2024-01-10
008 2023 bl uuuu u00u1 u #d
022 $a2238-1171)
024 7 $a10.5965/223811712242023529$2DOI
100 1 $aBARROS, J. R. A.
245 $aInitial establishment of cassava plants with increasing temperature.$h[electronic resource]
260 $c2023
520 $aAdverse environmental conditions, such as increased air temperature, have an impact on initial plant growth, interfering with the potential yield potential ofcrops. Thus, the objective was to evaluate the effect of increasing temperature on the initial establishment of cassava plants. The experiment was carried out in growth chambers, with a completely randomized design in a 3x2 factorial scheme (cultivars x temperature regimes), with five replications, for 165 days. Cassava seedlings of the cultivars BRS 417, BRS 420 and BRS CS01 were used and the temperature regimes: T1 (20-26-33 °C) and T2 (24.8-30.8-37.8 °C). The physiological parameters were negatively affected by the increase in temperature. These physiological changes resulted in an increase in leaf temperature. Cultivar BRS 420 had the highest stem diameter when compared to the others, with an average of 4.63 mm. The temperature regime of 24.8-30.8-37.8 °C contributed to greater plant height of cultivars BRS 420 and BRS CS01, with an average of 104.28 and 89.54 cm respectively. The increase in temperature also contributed to greater production of aboveground biomass, with an increase in fresh mass of 41% and 52% and dry mass of 20% and 37% for BRS 420 and BRS CS01, respectively. The fresh mass of the root system was greater with increasing temperature for the three cultivars analyzed, with emphasis on BRS 420, which also showed greater production of dry mass of the roots, regardless of the temperature regime. The increase in air temperature, with a daily regime of 24.8-30.8-37.8 °C favored the growth and development of young cassava plants, contributing to their establishment, even with changes in physiological responses
650 $aCassava
650 $aClimate change
650 $aManihot
650 $aPhotosynthesis
650 $aFotossíntese
650 $aMandioca
650 $aManihot Esculenta
650 $aMudança Climática
653 $aAumento da temperatura
700 1 $aSILVA, E. G. F.
700 1 $aSANTOS, C. B. dos
700 1 $aSILVA, J. de A.
700 1 $aSILVA, W. O. da
700 1 $aOLIVEIRA, A. R. de
700 1 $aANGELOTTI, F.
773 $tRevista de Ciências Agroveterinárias$gv. 22, n. 4, p. 529-536, 2023.
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Embrapa Semiárido (CPATSA) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Agrobiologia. Para informações adicionais entre em contato com cnpab.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Agrobiologia. |
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Data corrente: |
23/10/2003 |
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Data da última atualização: |
23/10/2003 |
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Autoria: |
ALVES, B. J. R.; BODDEY, R. M.; URQUIAGA, S. |
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Título: |
The Success of BNF in soybean in Brazil. |
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Ano de publicação: |
2003 |
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Fonte/Imprenta: |
Plant and Soil, Dordrecht, v. 252, p. 1-9, 2003. |
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Idioma: |
Inglês |
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Conteúdo: |
Approximately forty years after commercial cropping of soybean in Brazil began, the total area under this crop has reached over 13 M ha with a mean productivity of 2400 kg ha-l. Soybean varieties introduced from the USA and varieties rescued from early introductions in Brazilian territory were part of the Brazilian soybean-breeding programme which spread the crop from high to low latitudes. Disease-resistance, pest-resistance. tolerance to low fertility soils, as well as production of plants with pods sufficiently high above the ground for efficient mechanica1 harvesting. were all aims of the programme. Although BNF was not explicitly considered as a trait for selection in the breeding/selection programme, maximisation of biological nitrogen fixation (BNF) was favoured by conducting selection and breeding trials on soils low in N. in which the seeds were inoculated with efficient Bradyrhizobium inoculants but without N fertilizer application. Several efficient imported Brad)'rhizobium strains were found to be unable to compete with native soil micro-flora and other previously-introduced Brad)'rhizobium strains. Surprisingly. after being in the soil for many years one or two of these strains had become more competitive while maintaining their high BNF capacity. Today. these strains are included amongst the recommended Brazilian inoculants and have promoted significant improvements in grain yields. The breeding of soybeans in conditions that made grain yield highly dependent on BNF. and the continuous attention paid to the selection of Bradyrhizobium strains appropriate for the newly released varieties, have been the main contributors to today's high yields and their great benefit to the Brazilian economy. There seems to be no reason why this ongoing research programme should not serve as an appropriate model to improve BNF inputs to grain legume." in other countries of the world. MenosApproximately forty years after commercial cropping of soybean in Brazil began, the total area under this crop has reached over 13 M ha with a mean productivity of 2400 kg ha-l. Soybean varieties introduced from the USA and varieties rescued from early introductions in Brazilian territory were part of the Brazilian soybean-breeding programme which spread the crop from high to low latitudes. Disease-resistance, pest-resistance. tolerance to low fertility soils, as well as production of plants with pods sufficiently high above the ground for efficient mechanica1 harvesting. were all aims of the programme. Although BNF was not explicitly considered as a trait for selection in the breeding/selection programme, maximisation of biological nitrogen fixation (BNF) was favoured by conducting selection and breeding trials on soils low in N. in which the seeds were inoculated with efficient Bradyrhizobium inoculants but without N fertilizer application. Several efficient imported Brad)'rhizobium strains were found to be unable to compete with native soil micro-flora and other previously-introduced Brad)'rhizobium strains. Surprisingly. after being in the soil for many years one or two of these strains had become more competitive while maintaining their high BNF capacity. Today. these strains are included amongst the recommended Brazilian inoculants and have promoted significant improvements in grain yields. The breeding of soybeans in conditions that made grain yield highly dependent o... Mostrar Tudo |
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Palavras-Chave: |
Biological nitrogen fixation; BNF; FBN; Fixação biológica de nitrogênio; Soybean. |
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Thesagro: |
Glycine Max; Soja. |
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Thesaurus NAL: |
Bradyrhizobium. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02525naa a2200241 a 4500
001 1624714
005 2003-10-23
008 2003 bl --- 0-- u #d
100 1 $aALVES, B. J. R.
245 $aThe Success of BNF in soybean in Brazil.
260 $c2003
520 $aApproximately forty years after commercial cropping of soybean in Brazil began, the total area under this crop has reached over 13 M ha with a mean productivity of 2400 kg ha-l. Soybean varieties introduced from the USA and varieties rescued from early introductions in Brazilian territory were part of the Brazilian soybean-breeding programme which spread the crop from high to low latitudes. Disease-resistance, pest-resistance. tolerance to low fertility soils, as well as production of plants with pods sufficiently high above the ground for efficient mechanica1 harvesting. were all aims of the programme. Although BNF was not explicitly considered as a trait for selection in the breeding/selection programme, maximisation of biological nitrogen fixation (BNF) was favoured by conducting selection and breeding trials on soils low in N. in which the seeds were inoculated with efficient Bradyrhizobium inoculants but without N fertilizer application. Several efficient imported Brad)'rhizobium strains were found to be unable to compete with native soil micro-flora and other previously-introduced Brad)'rhizobium strains. Surprisingly. after being in the soil for many years one or two of these strains had become more competitive while maintaining their high BNF capacity. Today. these strains are included amongst the recommended Brazilian inoculants and have promoted significant improvements in grain yields. The breeding of soybeans in conditions that made grain yield highly dependent on BNF. and the continuous attention paid to the selection of Bradyrhizobium strains appropriate for the newly released varieties, have been the main contributors to today's high yields and their great benefit to the Brazilian economy. There seems to be no reason why this ongoing research programme should not serve as an appropriate model to improve BNF inputs to grain legume." in other countries of the world.
650 $aBradyrhizobium
650 $aGlycine Max
650 $aSoja
653 $aBiological nitrogen fixation
653 $aBNF
653 $aFBN
653 $aFixação biológica de nitrogênio
653 $aSoybean
700 1 $aBODDEY, R. M.
700 1 $aURQUIAGA, S.
773 $tPlant and Soil, Dordrecht$gv. 252, p. 1-9, 2003.
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