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Registro Completo |
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Biblioteca(s): |
Embrapa Meio Ambiente. |
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Data corrente: |
10/12/2019 |
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Data da última atualização: |
10/12/2019 |
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Tipo da produção científica: |
Resumo em Anais de Congresso |
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Autoria: |
MALAGODI-BRAGA, K. S.; MAIA, A. de H. N.; BATISTA, E. R.; RAKOCEVIC, M. |
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Afiliação: |
KATIA SAMPAIO MALAGOLI BRAGA, CNPMA; ALINE DE HOLANDA NUNES MAIA, CNPMA; EUNICE REIS BATISTA, CNPMA; M. RAKOCEVIC, Unicamp. |
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Título: |
Elevated CO2 mitigates the effects of anomalous drought reducing the proportion of abnormal reproductive structures in Arabic coffee. |
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Ano de publicação: |
2019 |
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Fonte/Imprenta: |
In: AGRICULTURE AND CLIMATE CHANGE CONFERENCE, 3., 2019, Budapest. [Abstracts...] Budapest: Elsevier Ltd., 2019. Ref. O3A.02. |
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Idioma: |
Português |
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Conteúdo: |
The increase in atmospheric carbon dioxide concentration [CO2] results in higher photosynthesis and growth of the upper layer structures in coffee trees. It was hypothesized that coffee trees would increase the reproductive investments of high plant layers under elevated [CO2](e[CO2]). The aim of this study was to estimate the dynamic in flowering intensity and quality at axis scale in free-air-CO2-enrichment (FACE) experiment over four years underrainfed conditions. The effects of actual [CO2](a[CO2], ~ 390 ?L CO2 L-1) and e[CO2] (~ 590 ?L CO2 L-1) on the flowering of Arabic coffee (cv. Red Catuaí IAC-144) were evaluated in completely randomized split-plot block design. Nonbranched second order plagiotropic axes from the upper layer, characterized by flower buds visually individualized on 13 to 16 metamers, were selected before the main flowering in 2012-2015. We used tulle bags to cover second order axes for reproductive structures collection. After abscission, buds and flowers were counted and classified as normal or abnormal. Flowering intensity and quality were impacted by e[CO2], varying by year. The coffee axes produced more reproductive structures in the first flowering year (2012) than later; this reproductive investment by axis was higher under e[CO2] than a[CO2] (Figure 1A-B). The % of dropped flower buds in 2012 was more than double compared to later years, without [CO2] impact (Figure 1C). High reproductive investments in the second-order axes in 2012 resulted from higher production of inflorescences per metamer compared to other years, with a positive e[CO2] effect. In 2014, drought in rainy period and high summer minimum temperatures (Figure 2) affected the inflorescences differentiation, increasing the proportion of abnormal reproductive structures compared to other years (Figure 1D). The e[CO2] reduced proportion of abnormal reproductive structures mitigating the anomalous drought effects. MenosThe increase in atmospheric carbon dioxide concentration [CO2] results in higher photosynthesis and growth of the upper layer structures in coffee trees. It was hypothesized that coffee trees would increase the reproductive investments of high plant layers under elevated [CO2](e[CO2]). The aim of this study was to estimate the dynamic in flowering intensity and quality at axis scale in free-air-CO2-enrichment (FACE) experiment over four years underrainfed conditions. The effects of actual [CO2](a[CO2], ~ 390 ?L CO2 L-1) and e[CO2] (~ 590 ?L CO2 L-1) on the flowering of Arabic coffee (cv. Red Catuaí IAC-144) were evaluated in completely randomized split-plot block design. Nonbranched second order plagiotropic axes from the upper layer, characterized by flower buds visually individualized on 13 to 16 metamers, were selected before the main flowering in 2012-2015. We used tulle bags to cover second order axes for reproductive structures collection. After abscission, buds and flowers were counted and classified as normal or abnormal. Flowering intensity and quality were impacted by e[CO2], varying by year. The coffee axes produced more reproductive structures in the first flowering year (2012) than later; this reproductive investment by axis was higher under e[CO2] than a[CO2] (Figure 1A-B). The % of dropped flower buds in 2012 was more than double compared to later years, without [CO2] impact (Figure 1C). High reproductive investments in the second-order axes in 2012 resulted f... Mostrar Tudo |
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Palavras-Chave: |
Axis scale; Coffee reproduction; Flowering intensity; Flowering quality. |
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Categoria do assunto: |
H Saúde e Patologia |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/206685/1/RA-Malagodi-BragaKS-et-al-3rdAgricultureClimate...-2019-RefO3A.pdf
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Marc: |
LEADER 02666nam a2200193 a 4500
001 2116563
005 2019-12-10
008 2019 bl uuuu u00u1 u #d
100 1 $aMALAGODI-BRAGA, K. S.
245 $aElevated CO2 mitigates the effects of anomalous drought reducing the proportion of abnormal reproductive structures in Arabic coffee.$h[electronic resource]
260 $aIn: AGRICULTURE AND CLIMATE CHANGE CONFERENCE, 3., 2019, Budapest. [Abstracts...] Budapest: Elsevier Ltd., 2019. Ref. O3A.02.$c2019
520 $aThe increase in atmospheric carbon dioxide concentration [CO2] results in higher photosynthesis and growth of the upper layer structures in coffee trees. It was hypothesized that coffee trees would increase the reproductive investments of high plant layers under elevated [CO2](e[CO2]). The aim of this study was to estimate the dynamic in flowering intensity and quality at axis scale in free-air-CO2-enrichment (FACE) experiment over four years underrainfed conditions. The effects of actual [CO2](a[CO2], ~ 390 ?L CO2 L-1) and e[CO2] (~ 590 ?L CO2 L-1) on the flowering of Arabic coffee (cv. Red Catuaí IAC-144) were evaluated in completely randomized split-plot block design. Nonbranched second order plagiotropic axes from the upper layer, characterized by flower buds visually individualized on 13 to 16 metamers, were selected before the main flowering in 2012-2015. We used tulle bags to cover second order axes for reproductive structures collection. After abscission, buds and flowers were counted and classified as normal or abnormal. Flowering intensity and quality were impacted by e[CO2], varying by year. The coffee axes produced more reproductive structures in the first flowering year (2012) than later; this reproductive investment by axis was higher under e[CO2] than a[CO2] (Figure 1A-B). The % of dropped flower buds in 2012 was more than double compared to later years, without [CO2] impact (Figure 1C). High reproductive investments in the second-order axes in 2012 resulted from higher production of inflorescences per metamer compared to other years, with a positive e[CO2] effect. In 2014, drought in rainy period and high summer minimum temperatures (Figure 2) affected the inflorescences differentiation, increasing the proportion of abnormal reproductive structures compared to other years (Figure 1D). The e[CO2] reduced proportion of abnormal reproductive structures mitigating the anomalous drought effects.
653 $aAxis scale
653 $aCoffee reproduction
653 $aFlowering intensity
653 $aFlowering quality
700 1 $aMAIA, A. de H. N.
700 1 $aBATISTA, E. R.
700 1 $aRAKOCEVIC, M.
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Registro original: |
Embrapa Meio Ambiente (CNPMA) |
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| Registros recuperados : 332 | |
| 122. |  | HAMADA, E.; MAIA, A. de H. N.; LUIZ, A. J. B. Similaridade das projeções de temperatura média, precipitação e umidade relativa para o nordeste brasileiro. In: SEMINÁRIO DA REDE AGROHIDRO, 3.; WORKSHOP DO PROJETO OS IMPACTOS DA AGRICULTURA E DAS MUDANÇAS CLIMÁTICAS NOS RECURSOS HÍDRICOS, 1., 2015, Corumbá, MS. Água na agricultura: desafios frente às mudanças climáticas e de uso da terra: resumos. Corumbá: Embrapa Pantanal, 2015. 58| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Meio Ambiente. |
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| 124. | | MAIA, A. de H. N.; NARCISO, M. G.; DOURADO NETO, D. Sistema para avaliação de risco de resistência de insetos a toxinas Bt expressas em culturas transgênicas. iN: CONGRESSO BRASILEIRO DE AGROINFORMÁTICA, 11., 2017, Campinas. Ciência de dados na era da agricultura digital: anais. Campinas, Editora da Unicamp: Embrapa Informática Agropecuária, 2017. Organizadores: Jayme Garcia Arnal Barbedo, Maria Fernanda Moura, Luciana Alvim Santos Romani, Thiago Teixeira Santos, Débora Pignatari Drucker. SBIAgro 2017. p. 307-316| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Meio Ambiente. |
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| 132. | | PARAIBA, L. C.; CASTRO, V. L. S. S. de; MAIA, A. de H. N. Estimates of insecticide percent distribution among human tissues. In: CONGRESO IBÉRICO, 6., IBEROAMERICANO DE CONTAMINACIÓN Y TOXICOLOGÍA AMBIENTAL – CICTA, 3., 2005, Cádiz, Spain. The environment: a challenge for the scientific research: abstracts. Cádiz, Spain: CICTA, 2005. p. 28.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Meio Ambiente. |
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| 136. | | SOUZA, F. X. de; COSTA, J. T. A.; COELHO, E. L.; MAIA, A. de H. N. Comportamento vegetativo e reprodutivo de clones de cajazeira cultivados na Chapada do Apodi, Ceará. Revista Ciência Agronômica, Fortaleza, v. 43, n. 2, p. 293-300, 2012.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: B - 1 |
| Biblioteca(s): Embrapa Agroindústria Tropical; Embrapa Meio Ambiente. |
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| Registros recuperados : 332 | |
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| Nenhum registro encontrado para a expressão de busca informada. |
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