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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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Registro Completo
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Biblioteca(s): |
Embrapa Unidades Centrais. |
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Data corrente: |
06/01/2000 |
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Data da última atualização: |
11/07/2019 |
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Autoria: |
REGAZZI, A. J.; SILVA, H. D.; VIANA, J. M. S.; CRUZ, C. D. |
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Afiliação: |
ADAIR JOSÉ REGAZZI, Universidade Federal de Viçosa - UFV/Departamento de Informática; HEYDER DINIZ SILVA, Universidade Federal de Uberaba - UFU/Departamento de Matemática; JOSÉ MARCELO SORIANO VIANA, Universidade Federal de Viçosa - UFV/Departamento de Biologia Geral; COSME DAMIÃO CRUZ, Universidade Federal de Viçosa - UFV/Departamento de Biologia Geral. |
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Título: |
Analise de experimentos em látice quadrado com ênfase em componentes de variância. II. Análise conjunta. |
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Ano de publicação: |
1999 |
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Fonte/Imprenta: |
Pesquisa Agropecuária Brasileira, Brasília, DF, v. 34, n. 11, p. 1987-97, nov. 1999 |
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Idioma: |
Português |
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Notas: |
Título em inglês: Analysis of experiments in square lattice with emphasis on variance components: II. Joint analysis. |
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Conteúdo: |
Este trabalho teve como objetivo avaliar as seguintes alternativas de analise de grupo de experimentos em latice quadrado ("Square Lattice"), quando a estimacao de componentes de variancia e alguns parametros geneticos: 1) analise intrablocos com tratamentos ajustados e blocos dentro de repeticoes nao-ajustados; 2) analise do latice com blocos casualizados completos; 3) analise intrablocos com tratamentos nao-ajustados e blocos dentro de repeticoes ajustados; 4) analise do latice como blocos casualizados completos, utilizando-se as medias ajustadas dos tratamentos, obtidas a partir da analise com recuperacao da informacao interblocos, tendo como quadrado medio do residuo, a media dos residuos (variancia efetiva media), das analises individuais, desta mesma analise com recuperacao da informacao interblocos. Para as quatro alternativas de analise, obtiveram-se os estimadores e as estimativas para os componentes de variancia e coeficientes de herdabilidade. Houve grande concordancia entre as quatro alternativas de analise estudadas, quanto a classificacao dos materiais avaliados. Para um particular conjunto de dados e dependendo dos objetivos de analise, convem pesquisar qual das alternativas de analise e preferivel, principalmente nos casos em que se obtem uma estimativa negativa para o componente de variancia devido a efeitos de blocos dentro de repeticoes ajustados, para varias das analises individuais. |
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Palavras-Chave: |
Genetic parameters; Melhoramento de plantas; Parametros geneticos. |
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Thesaurus NAL: |
plant breeding. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/AI-SEDE/16580/1/PAB97_273.pdf
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Marc: |
LEADER 02212naa a2200217 a 4500
001 1101048
005 2019-07-11
008 1999 bl uuuu u00u1 u #d
100 1 $aREGAZZI, A. J.
245 $aAnalise de experimentos em látice quadrado com ênfase em componentes de variância. II. Análise conjunta.
260 $c1999
500 $aTítulo em inglês: Analysis of experiments in square lattice with emphasis on variance components: II. Joint analysis.
520 $aEste trabalho teve como objetivo avaliar as seguintes alternativas de analise de grupo de experimentos em latice quadrado ("Square Lattice"), quando a estimacao de componentes de variancia e alguns parametros geneticos: 1) analise intrablocos com tratamentos ajustados e blocos dentro de repeticoes nao-ajustados; 2) analise do latice com blocos casualizados completos; 3) analise intrablocos com tratamentos nao-ajustados e blocos dentro de repeticoes ajustados; 4) analise do latice como blocos casualizados completos, utilizando-se as medias ajustadas dos tratamentos, obtidas a partir da analise com recuperacao da informacao interblocos, tendo como quadrado medio do residuo, a media dos residuos (variancia efetiva media), das analises individuais, desta mesma analise com recuperacao da informacao interblocos. Para as quatro alternativas de analise, obtiveram-se os estimadores e as estimativas para os componentes de variancia e coeficientes de herdabilidade. Houve grande concordancia entre as quatro alternativas de analise estudadas, quanto a classificacao dos materiais avaliados. Para um particular conjunto de dados e dependendo dos objetivos de analise, convem pesquisar qual das alternativas de analise e preferivel, principalmente nos casos em que se obtem uma estimativa negativa para o componente de variancia devido a efeitos de blocos dentro de repeticoes ajustados, para varias das analises individuais.
650 $aplant breeding
653 $aGenetic parameters
653 $aMelhoramento de plantas
653 $aParametros geneticos
700 1 $aSILVA, H. D.
700 1 $aVIANA, J. M. S.
700 1 $aCRUZ, C. D.
773 $tPesquisa Agropecuária Brasileira, Brasília, DF$gv. 34, n. 11, p. 1987-97, nov. 1999
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Embrapa Unidades Centrais (AI-SEDE) |
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