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Registro Completo |
Biblioteca(s): |
Embrapa Solos. |
Data corrente: |
08/02/2021 |
Data da última atualização: |
26/10/2021 |
Tipo da produção científica: |
Artigo em Anais de Congresso |
Autoria: |
MACHADO, J. da S. T.; PIMENTEL, R. M.; DONAGEMMA, G. K.; MACHADO, F. L.; MATEUS, L. G. |
Afiliação: |
JOSIANE DA SILVA TORRES MACHADO, UFF; RÓBERSON MACHADO PIMENTEL, UFF; GUILHERME KANGUSSU DONAGEMMA, CNPS; FLÁVIO LESSA MACHADO, UFF; LISANDRA GOMES MATEUS, UFF. |
Título: |
Characterization of elephant grass (Pennisetum purpureum Schum. - BRS Capiaçu) as an alternative source of energy cultivated in the rain period in Macacu-RJ waterfalls. |
Ano de publicação: |
2020 |
Fonte/Imprenta: |
In: WORKSHOP ON BIOSYSTEMS ENGINEERING - WEB 6.0, 6., 2020, Niterói. Proceedings... Niterói: AGRHA, 2020. p. 43-46. |
Idioma: |
Inglês |
Conteúdo: |
Diversifying the energy matrix, minimizing the use of oil sources, combating extreme weather events, are important strategies to mitigate environmental impacts. In this way, elephant grass (Pennisetum purpureum Schum. - BRS Capiaçu) is considered a prominent source of renewable energy containing high biomass productivity. Thus, the study was conducted to characterize the potential of the cultivar BRS Capiaçu, a recent genotype of elephant grass from Embrapa Gado de leite, in the production of energy biomass in the rainy season, grown in the city of Cachoeiras de Macacu. The treatments consist of four different experimental units, treatments 1, 2, 3 and 4, with four repetitions and cut performed at 180 days, in the month of November. The experiment was designed in a completely randomized design (DIC) with four samples and four replications, thus totaling 16 experimental units. The variables analyzed were dry matter (DM), mineral material or ash (MM), average plant height (AP), average number of leaves (EN), stem diameter (DC), number of tillers (NP), leaf production (PF), calorific value (PC), acid detergent insoluble fiber (FDA), nitrogen and lignin. Statistical procedures were performed with the R program and the means were compared using the Tukey test (p <0.05). In Productivity, the grass reached 21,713 kg / MS / ha in 180 days of harvest. The calorific value reached (17.91 MJ kg -1). The cutoff period in the rainy season accumulated a higher proportion of ash in the constitution of the plant, making heat transfer difficult. MenosDiversifying the energy matrix, minimizing the use of oil sources, combating extreme weather events, are important strategies to mitigate environmental impacts. In this way, elephant grass (Pennisetum purpureum Schum. - BRS Capiaçu) is considered a prominent source of renewable energy containing high biomass productivity. Thus, the study was conducted to characterize the potential of the cultivar BRS Capiaçu, a recent genotype of elephant grass from Embrapa Gado de leite, in the production of energy biomass in the rainy season, grown in the city of Cachoeiras de Macacu. The treatments consist of four different experimental units, treatments 1, 2, 3 and 4, with four repetitions and cut performed at 180 days, in the month of November. The experiment was designed in a completely randomized design (DIC) with four samples and four replications, thus totaling 16 experimental units. The variables analyzed were dry matter (DM), mineral material or ash (MM), average plant height (AP), average number of leaves (EN), stem diameter (DC), number of tillers (NP), leaf production (PF), calorific value (PC), acid detergent insoluble fiber (FDA), nitrogen and lignin. Statistical procedures were performed with the R program and the means were compared using the Tukey test (p <0.05). In Productivity, the grass reached 21,713 kg / MS / ha in 180 days of harvest. The calorific value reached (17.91 MJ kg -1). The cutoff period in the rainy season accumulated a higher proportion of ash in the cons... Mostrar Tudo |
Palavras-Chave: |
Clean Energy; Energia Limpa. |
Thesagro: |
Biomassa; Forragem. |
Thesaurus Nal: |
Biomass; Forage. |
Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/220996/1/Characterization-of-elephant-grass-2020.pdf
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Marc: |
LEADER 02364nam a2200229 a 4500 001 2129850 005 2021-10-26 008 2020 bl uuuu u00u1 u #d 100 1 $aMACHADO, J. da S. T. 245 $aCharacterization of elephant grass (Pennisetum purpureum Schum. - BRS Capiaçu) as an alternative source of energy cultivated in the rain period in Macacu-RJ waterfalls.$h[electronic resource] 260 $aIn: WORKSHOP ON BIOSYSTEMS ENGINEERING - WEB 6.0, 6., 2020, Niterói. Proceedings... Niterói: AGRHA, 2020. p. 43-46.$c2020 520 $aDiversifying the energy matrix, minimizing the use of oil sources, combating extreme weather events, are important strategies to mitigate environmental impacts. In this way, elephant grass (Pennisetum purpureum Schum. - BRS Capiaçu) is considered a prominent source of renewable energy containing high biomass productivity. Thus, the study was conducted to characterize the potential of the cultivar BRS Capiaçu, a recent genotype of elephant grass from Embrapa Gado de leite, in the production of energy biomass in the rainy season, grown in the city of Cachoeiras de Macacu. The treatments consist of four different experimental units, treatments 1, 2, 3 and 4, with four repetitions and cut performed at 180 days, in the month of November. The experiment was designed in a completely randomized design (DIC) with four samples and four replications, thus totaling 16 experimental units. The variables analyzed were dry matter (DM), mineral material or ash (MM), average plant height (AP), average number of leaves (EN), stem diameter (DC), number of tillers (NP), leaf production (PF), calorific value (PC), acid detergent insoluble fiber (FDA), nitrogen and lignin. Statistical procedures were performed with the R program and the means were compared using the Tukey test (p <0.05). In Productivity, the grass reached 21,713 kg / MS / ha in 180 days of harvest. The calorific value reached (17.91 MJ kg -1). The cutoff period in the rainy season accumulated a higher proportion of ash in the constitution of the plant, making heat transfer difficult. 650 $aBiomass 650 $aForage 650 $aBiomassa 650 $aForragem 653 $aClean Energy 653 $aEnergia Limpa 700 1 $aPIMENTEL, R. M. 700 1 $aDONAGEMMA, G. K. 700 1 $aMACHADO, F. L. 700 1 $aMATEUS, L. G.
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Registro original: |
Embrapa Solos (CNPS) |
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Biblioteca(s): |
Embrapa Arroz e Feijão. |
Data corrente: |
13/12/2023 |
Data da última atualização: |
18/12/2023 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
A - 4 |
Autoria: |
CRUZ, T. I. da; ROCHA, D. C.; LANNA, A. C.; DEDICOVA, B.; VIANELLO, R. P.; BRONDANI, C. |
Afiliação: |
THAÍS IGNEZ DA CRUZ, UFG; DHIÔVANNA CORRÊIA ROCHA, IAC; ANNA CRISTINA LANNA, CNPAF; BEATA DEDICOVA, SWEDISH UNIVERSITY OF AGRICULTURAL SCIENCES; ROSANA PEREIRA VIANELLO, CNPAF; CLAUDIO BRONDANI, CNPAF. |
Título: |
Calcium-dependent protein kinase 5 (OsCPK5) overexpression in upland rice (Oryza sativa L.) under water deficit. |
Ano de publicação: |
2023 |
Fonte/Imprenta: |
Plants, v. 12, n. 22, 3826, Nov. 2023. |
ISSN: |
2223-7747 |
DOI: |
https://doi.org/10.3390/plants12223826 |
Idioma: |
Inglês |
Conteúdo: |
Water deficit significantly affects global crop growth and productivity, particularly in water-limited environments, such as upland rice cultivation, reducing grain yield. Plants activate various defense mechanisms during water deficit, involving numerous genes and complex metabolic pathways. Exploring homologous genes that are linked to enhanced drought tolerance through the use of genomic data from model organisms can aid in the functional validation of target species. We evaluated the upland rice OsCPK5 gene, an A. thaliana AtCPK6 homolog, by overexpressing it in the BRSMG Curinga cultivar. Transformants were assessed using a semi-automated phenotyping platform under two irrigation conditions: regular watering, and water deficit applied 79 days after seeding, lasting 14 days, followed by irrigation at 80% field capacity. The physiological data and leaf samples were collected at reproductive stages R3, R6, and R8. The genetically modified (GM) plants consistently exhibited higher OsCPK5 gene expression levels across stages, peaking during grain filling, and displayed reduced stomatal conductance and photosynthetic rate and increased water-use efficiency compared to non-GM (NGM) plants under drought. The GM plants also exhibited a higher filled grain percentage under both irrigation conditions. Their drought susceptibility index was 0.9 times lower than that of NGM plants, and they maintained a higher chlorophyll a/b index, indicating sustained photosynthesis. The NGM plants under water deficit exhibited more leaf senescence, while the OsCPK5-overexpressing plants retained their green leaves. Overall, OsCPK5 overexpression induced diverse drought tolerance mechanisms, indicating the potential for future development of more drought-tolerant rice cultivars. MenosWater deficit significantly affects global crop growth and productivity, particularly in water-limited environments, such as upland rice cultivation, reducing grain yield. Plants activate various defense mechanisms during water deficit, involving numerous genes and complex metabolic pathways. Exploring homologous genes that are linked to enhanced drought tolerance through the use of genomic data from model organisms can aid in the functional validation of target species. We evaluated the upland rice OsCPK5 gene, an A. thaliana AtCPK6 homolog, by overexpressing it in the BRSMG Curinga cultivar. Transformants were assessed using a semi-automated phenotyping platform under two irrigation conditions: regular watering, and water deficit applied 79 days after seeding, lasting 14 days, followed by irrigation at 80% field capacity. The physiological data and leaf samples were collected at reproductive stages R3, R6, and R8. The genetically modified (GM) plants consistently exhibited higher OsCPK5 gene expression levels across stages, peaking during grain filling, and displayed reduced stomatal conductance and photosynthetic rate and increased water-use efficiency compared to non-GM (NGM) plants under drought. The GM plants also exhibited a higher filled grain percentage under both irrigation conditions. Their drought susceptibility index was 0.9 times lower than that of NGM plants, and they maintained a higher chlorophyll a/b index, indicating sustained photosynthesis. The NGM plant... Mostrar Tudo |
Thesagro: |
Arroz; Deficiência Hídrica; Oryza Sativa; Resistência a Seca. |
Thesaurus NAL: |
Drought; Gene expression; Rice; Senescence (aging); Water use efficiency. |
Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/1159651/1/plants-2023.pdf
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Marc: |
LEADER 02692naa a2200313 a 4500 001 2159651 005 2023-12-18 008 2023 bl uuuu u00u1 u #d 022 $a2223-7747 024 7 $ahttps://doi.org/10.3390/plants12223826$2DOI 100 1 $aCRUZ, T. I. da 245 $aCalcium-dependent protein kinase 5 (OsCPK5) overexpression in upland rice (Oryza sativa L.) under water deficit.$h[electronic resource] 260 $c2023 520 $aWater deficit significantly affects global crop growth and productivity, particularly in water-limited environments, such as upland rice cultivation, reducing grain yield. Plants activate various defense mechanisms during water deficit, involving numerous genes and complex metabolic pathways. Exploring homologous genes that are linked to enhanced drought tolerance through the use of genomic data from model organisms can aid in the functional validation of target species. We evaluated the upland rice OsCPK5 gene, an A. thaliana AtCPK6 homolog, by overexpressing it in the BRSMG Curinga cultivar. Transformants were assessed using a semi-automated phenotyping platform under two irrigation conditions: regular watering, and water deficit applied 79 days after seeding, lasting 14 days, followed by irrigation at 80% field capacity. The physiological data and leaf samples were collected at reproductive stages R3, R6, and R8. The genetically modified (GM) plants consistently exhibited higher OsCPK5 gene expression levels across stages, peaking during grain filling, and displayed reduced stomatal conductance and photosynthetic rate and increased water-use efficiency compared to non-GM (NGM) plants under drought. The GM plants also exhibited a higher filled grain percentage under both irrigation conditions. Their drought susceptibility index was 0.9 times lower than that of NGM plants, and they maintained a higher chlorophyll a/b index, indicating sustained photosynthesis. The NGM plants under water deficit exhibited more leaf senescence, while the OsCPK5-overexpressing plants retained their green leaves. Overall, OsCPK5 overexpression induced diverse drought tolerance mechanisms, indicating the potential for future development of more drought-tolerant rice cultivars. 650 $aDrought 650 $aGene expression 650 $aRice 650 $aSenescence (aging) 650 $aWater use efficiency 650 $aArroz 650 $aDeficiência Hídrica 650 $aOryza Sativa 650 $aResistência a Seca 700 1 $aROCHA, D. C. 700 1 $aLANNA, A. C. 700 1 $aDEDICOVA, B. 700 1 $aVIANELLO, R. P. 700 1 $aBRONDANI, C. 773 $tPlants$gv. 12, n. 22, 3826, Nov. 2023.
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