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Registro Completo |
Biblioteca(s): |
Embrapa Meio Ambiente. |
Data corrente: |
09/12/2019 |
Data da última atualização: |
10/12/2019 |
Tipo da produção científica: |
Resumo em Anais de Congresso |
Autoria: |
RAKOCEVIC, M.; BATISTA, E. R. |
Afiliação: |
Miroslava RAKOCEVIC, Unicamp; EUNICE REIS BATISTA, CNPMA. |
Título: |
Photosynthetic light curve parameters over vertical profile of Coffea arabica plants after five years of FACE experiment. |
Ano de publicação: |
2019 |
Fonte/Imprenta: |
In: AGRICULTURE AND CLIMATE CHANGE CONFERENCE, 3., 2019, Budapest. [Abstracts...] Budapest: Elsevier Ltd., 2019. Ref. P073. |
Idioma: |
Português |
Conteúdo: |
Trends in climate changes indicate that the air [CO2] will continue to increase. The first plant response to elevated [CO2] (e[CO2]) is the increased photosynthetic rate. Photosynthetic rate dependence on light (A/PAR curves) is characterized by several parameters, often used to determine plant species responses to environment and phenological plasticity. The effects of water supply and phenological stage were expected, with no acclimation after long-term Coffea arabica L. cultivation under e[CO2]. The aim of the study was to determine variations in parameters of A/PAR curves in coffee leaves over a tree vertical profile after long-term cultivation under free-air-CO2-enrichment (FACE) system. The p arameters of A/PAR curves in C. arabica were estimated after five-years cultivation in FACE under two CO2 conditions, actual (a[CO2], ~390?L CO2 L-1) and e[CO2] (~590?L CO2 L-1), in two water regimes (rainfed and irrigation). The A/PAR curves were estimated in two phenological stages (grain formation - February 2016 and fruit maturation - May 2016). The A/PAR responses were determined by varying photosynthetic active radiation (PAR) from 1117 to 0 ?mol photons m?2 s?1 in four 50 cm-thick layers of vertical plant profile. The maximum photosynthesis (Amax), dark respiration (Rd), apparent quantum efficiency (?), and light compensation point (?) generally increased under e[CO2] compared to a[CO2], showing higher values during grain formation than during fruit maturation (Figure 1). The Rd and ? followed the progressive increase by layers only during the grain formation (Figures 1C and 1E). Continuation in e[CO2] stimulation indicated that leaf photosynthesis acclimation did not occur after five-years coffee cultivation under FACE. The lack of progressive increase in Amax, ? and ? over vertical profile indicates leaf plasticity to light availability, especially considering the high Amax of the two lowest layers. The compensation effects of e[CO2] to low water availability were observed in all A/PAR responses. MenosTrends in climate changes indicate that the air [CO2] will continue to increase. The first plant response to elevated [CO2] (e[CO2]) is the increased photosynthetic rate. Photosynthetic rate dependence on light (A/PAR curves) is characterized by several parameters, often used to determine plant species responses to environment and phenological plasticity. The effects of water supply and phenological stage were expected, with no acclimation after long-term Coffea arabica L. cultivation under e[CO2]. The aim of the study was to determine variations in parameters of A/PAR curves in coffee leaves over a tree vertical profile after long-term cultivation under free-air-CO2-enrichment (FACE) system. The p arameters of A/PAR curves in C. arabica were estimated after five-years cultivation in FACE under two CO2 conditions, actual (a[CO2], ~390?L CO2 L-1) and e[CO2] (~590?L CO2 L-1), in two water regimes (rainfed and irrigation). The A/PAR curves were estimated in two phenological stages (grain formation - February 2016 and fruit maturation - May 2016). The A/PAR responses were determined by varying photosynthetic active radiation (PAR) from 1117 to 0 ?mol photons m?2 s?1 in four 50 cm-thick layers of vertical plant profile. The maximum photosynthesis (Amax), dark respiration (Rd), apparent quantum efficiency (?), and light compensation point (?) generally increased under e[CO2] compared to a[CO2], showing higher values during grain formation than during fruit maturation (Figure 1). T... Mostrar Tudo |
Palavras-Chave: |
Amax; Elevated CO2; FACE experiment. |
Thesagro: |
Coffea Arábica; Mudança Climática; Seca. |
Thesaurus Nal: |
Drought; Phenology. |
Categoria do assunto: |
H Saúde e Patologia |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/206488/1/RA-BatistaER-3rdAgricultureClimate...-2019-RefP073.pdf
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Marc: |
LEADER 02762nam a2200217 a 4500 001 2116357 005 2019-12-10 008 2019 bl uuuu u00u1 u #d 100 1 $aRAKOCEVIC, M. 245 $aPhotosynthetic light curve parameters over vertical profile of Coffea arabica plants after five years of FACE experiment.$h[electronic resource] 260 $aIn: AGRICULTURE AND CLIMATE CHANGE CONFERENCE, 3., 2019, Budapest. [Abstracts...] Budapest: Elsevier Ltd., 2019. Ref. P073.$c2019 520 $aTrends in climate changes indicate that the air [CO2] will continue to increase. The first plant response to elevated [CO2] (e[CO2]) is the increased photosynthetic rate. Photosynthetic rate dependence on light (A/PAR curves) is characterized by several parameters, often used to determine plant species responses to environment and phenological plasticity. The effects of water supply and phenological stage were expected, with no acclimation after long-term Coffea arabica L. cultivation under e[CO2]. The aim of the study was to determine variations in parameters of A/PAR curves in coffee leaves over a tree vertical profile after long-term cultivation under free-air-CO2-enrichment (FACE) system. The p arameters of A/PAR curves in C. arabica were estimated after five-years cultivation in FACE under two CO2 conditions, actual (a[CO2], ~390?L CO2 L-1) and e[CO2] (~590?L CO2 L-1), in two water regimes (rainfed and irrigation). The A/PAR curves were estimated in two phenological stages (grain formation - February 2016 and fruit maturation - May 2016). The A/PAR responses were determined by varying photosynthetic active radiation (PAR) from 1117 to 0 ?mol photons m?2 s?1 in four 50 cm-thick layers of vertical plant profile. The maximum photosynthesis (Amax), dark respiration (Rd), apparent quantum efficiency (?), and light compensation point (?) generally increased under e[CO2] compared to a[CO2], showing higher values during grain formation than during fruit maturation (Figure 1). The Rd and ? followed the progressive increase by layers only during the grain formation (Figures 1C and 1E). Continuation in e[CO2] stimulation indicated that leaf photosynthesis acclimation did not occur after five-years coffee cultivation under FACE. The lack of progressive increase in Amax, ? and ? over vertical profile indicates leaf plasticity to light availability, especially considering the high Amax of the two lowest layers. The compensation effects of e[CO2] to low water availability were observed in all A/PAR responses. 650 $aDrought 650 $aPhenology 650 $aCoffea Arábica 650 $aMudança Climática 650 $aSeca 653 $aAmax 653 $aElevated CO2 653 $aFACE experiment 700 1 $aBATISTA, E. R.
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Registro original: |
Embrapa Meio Ambiente (CNPMA) |
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Biblioteca(s): |
Embrapa Rondônia. |
Data corrente: |
22/06/2016 |
Data da última atualização: |
03/11/2020 |
Tipo da produção científica: |
Resumo em Anais de Congresso |
Autoria: |
OLIVEIRA, L. F. M. de; SALMAN, A. K. D.; GIORDANI JUNIOR, R.; CAVALI, J.; LOPES, C. B.; RODRIGUES, E. C. A.; BAIER, F. X.; PORTO, M. O. |
Afiliação: |
Luíza Flávia Mourão de Oliveira, FIMCA; ANA KARINA DIAS SALMAN, CPAF-Rondonia; Rudimar Giordani Junior, PGCA-UNIR; Jucilene Cavali, UNIR; Cleverson Beck Lopes, UNIR; Evely Caroliny Abatti Rodrigues, UNIR; Fabricio Xavier Baier, Acadêmico de Ciência Animal; Marlos Oliveira Porto, UNIR. |
Título: |
Milk composition of Murrah buffalo cows supplemented with cupuassu byproduct in Western Amazon. |
Ano de publicação: |
2016 |
Fonte/Imprenta: |
In: INTERNATIONAL MEETING OF ADVANCES IN ANIMAL SCIENCE, 2016, Jaboticabal. Papers... Jaboticabal: Unesp, 2016. IMAS. |
Idioma: |
Inglês |
Conteúdo: |
The aim of this study was to evaluate milk composition of Murrah buffalo cows supplemented with rations containing cupuassu byproduct in substitution of ground corn. Isoprotein and isoenergy rations were balanced with 22.0% of crude protein (CP) and 80.1% of total digestible nutrient (TDN). |
Palavras-Chave: |
Agro-industrial byproducts; Grazing system; Leite de búfala; Subprodutos agroindustriais. |
Thesagro: |
Sistema de Pastejo. |
Thesaurus NAL: |
buffalo milk. |
Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/144689/1/galoa-proceedings-imas-45269-milk-composition.pdf
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Marc: |
LEADER 01177nam a2200265 a 4500 001 2047717 005 2020-11-03 008 2016 bl uuuu u00u1 u #d 100 1 $aOLIVEIRA, L. F. M. de 245 $aMilk composition of Murrah buffalo cows supplemented with cupuassu byproduct in Western Amazon.$h[electronic resource] 260 $aIn: INTERNATIONAL MEETING OF ADVANCES IN ANIMAL SCIENCE, 2016, Jaboticabal. Papers... Jaboticabal: Unesp, 2016. IMAS.$c2016 520 $aThe aim of this study was to evaluate milk composition of Murrah buffalo cows supplemented with rations containing cupuassu byproduct in substitution of ground corn. Isoprotein and isoenergy rations were balanced with 22.0% of crude protein (CP) and 80.1% of total digestible nutrient (TDN). 650 $abuffalo milk 650 $aSistema de Pastejo 653 $aAgro-industrial byproducts 653 $aGrazing system 653 $aLeite de búfala 653 $aSubprodutos agroindustriais 700 1 $aSALMAN, A. K. D. 700 1 $aGIORDANI JUNIOR, R. 700 1 $aCAVALI, J. 700 1 $aLOPES, C. B. 700 1 $aRODRIGUES, E. C. A. 700 1 $aBAIER, F. X. 700 1 $aPORTO, M. O.
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