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 | Acesso ao texto completo restrito à biblioteca da Embrapa Meio Ambiente. Para informações adicionais entre em contato com cnpma.biblioteca@embrapa.br. |
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Biblioteca(s): |
Embrapa Meio Ambiente. |
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Data corrente: |
30/01/2025 |
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Data da última atualização: |
11/02/2025 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
RAKOCEVIC, M.; MATSUNAGA, F. T.; PAZIANOTTO, R. A. A.; RAMALHO, J. C.; COSTES, E.; RIBEIRO, R. V. |
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Afiliação: |
MIROSLAVA RAKOCEVIC, UNIVERSIDADE ESTADUAL DE CAMPINAS; FABIO TAKESHI MATSUNAGA, INSTITUTO AGRONÔMICO DO PARANÁ; RICARDO ANTONIO ALMEIDA PAZIANOTTO, CNPMA; JOSÉ COCHICHO RAMALHO, UNIVERSIDADE DE LISBOA; EVELYNE COSTES, UNIVERSITÉ DE MONTPELLIER; RAFAEL VASCONCELOS RIBEIRO, UNIVERSIDADE ESTADUAL DE CAMPINAS. |
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Título: |
Drought responses in Coffea arabica as affected by genotype and phenophase. I - leaf distribution and branching. |
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Ano de publicação: |
2024 |
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Fonte/Imprenta: |
Experimental Agriculture, v. 60, article e7, 2024. |
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ISSN: |
0014-4797 |
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DOI: |
https://doi.org/10.1017/S0014479724000152 |
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Idioma: |
Inglês |
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Conteúdo: |
Abstract: In Coffea arabica, there is a small genetic distance between wild and bred genotypes. However, coffee genotypes express differential acclimation to multiple drought cycles, allowing them to successfully deal with water-limiting conditions. We hypothesized that bred coffee cultivars have a plant structure less sensitive to drought than wild genotypes. Plant and leaf architecture were analyzed over the coffee strata of two cultivars (Iapar 59 and Catuai 99) and two wild Ethiopia accessions (‘E083’ and ‘E027’) grown under rainfed conditions and irrigation. During two consecutive productive years, evaluations were taken at leaf and berry expansion (BE1 and BE2) and harvest (BH1 and BH2) phenophases. The plant canopy was divided into up to four strata of 40 cm of thickness. Topological and geometric coding of coffee trees was performed in three botanical scales - metamers, branches, and plants in multiscale tree graphs (MTGs), following the VPlants modeling platform. Leaf and branch area per plant increased with tree structure development, being always significantly higher in irrigated than in rainfed plants over all phenophases. The individual leaf area was the least sensitive to water regime in Catuai 99, while the 2nd order axis elevation - angle in relation to horizontal plane, ranging from 0 degrees to 90 degrees - of bred cultivars was less sensitive to drought than in ‘E083’. This finding partially corroborated our hypothesis that orchestrated reprograming of leaf/branch responses over the vertical plant profile were less sensitive to water availability in cultivars than in wild accessions. Leaves of 2nd to 4th-order branching were roughly plagiophile, while the 1st-order leaves were classified as extremophiles. When the coffee leaves were planophile, irrespective of genotype, this pattern was found at the lowest, 1st plant stratum, and the newest developed 4th stratum. Such responses were not obligatorily related to water regime, similar to branch elevation - with exception of ‘E083’, very sensitive to drought. Taken together, our data suggest that the leaf and branch elevations in C. arabica were more influenced by light distribution through the canopy profile - i.e., self-shading - than by water availability. MenosAbstract: In Coffea arabica, there is a small genetic distance between wild and bred genotypes. However, coffee genotypes express differential acclimation to multiple drought cycles, allowing them to successfully deal with water-limiting conditions. We hypothesized that bred coffee cultivars have a plant structure less sensitive to drought than wild genotypes. Plant and leaf architecture were analyzed over the coffee strata of two cultivars (Iapar 59 and Catuai 99) and two wild Ethiopia accessions (‘E083’ and ‘E027’) grown under rainfed conditions and irrigation. During two consecutive productive years, evaluations were taken at leaf and berry expansion (BE1 and BE2) and harvest (BH1 and BH2) phenophases. The plant canopy was divided into up to four strata of 40 cm of thickness. Topological and geometric coding of coffee trees was performed in three botanical scales - metamers, branches, and plants in multiscale tree graphs (MTGs), following the VPlants modeling platform. Leaf and branch area per plant increased with tree structure development, being always significantly higher in irrigated than in rainfed plants over all phenophases. The individual leaf area was the least sensitive to water regime in Catuai 99, while the 2nd order axis elevation - angle in relation to horizontal plane, ranging from 0 degrees to 90 degrees - of bred cultivars was less sensitive to drought than in ‘E083’. This finding partially corroborated our hypothesis that orchestrated reprograming of lea... Mostrar Tudo |
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Palavras-Chave: |
Branch elevation; Leaf elevation; Tree form; VPlants. |
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Thesagro: |
Área Foliar; Café; Disposição de Folhas; Seca. |
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Thesaurus Nal: |
Branching; Coffea; Cultivars; Drought; Drought tolerance; Leaf area; Leaf area index; Wild plants. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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Marc: |
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Registro original: |
Embrapa Meio Ambiente (CNPMA) |
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| Registros recuperados : 4 | |
| 2. |  | KLUTHCOUSKI, J.; SEIJAS, C. A. R.; SARTORATO, A.; YOKOYAMA, M.; GUAZZELLI, R. J.; SEGUY, L. Práticas básicas para não errar na lavoura de feijão. A Granja, v. 42, n. 457, p. 28-37, fev. 1986.| Tipo: Artigo em Periódico Indexado |
| Biblioteca(s): Embrapa Arroz e Feijão. |
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| 4. | | AIDAR, H.; SARTORATO, A.; NEVES, B. P.; SEIJAS, C. A. R.; WATT, E. E.; RIOS, G. P.; KLUTHCOUSKI, J.; ARAUJO, J. P. P.; THUNG, M. D. T.; PEREIRA, P. A. A.; DAOUST, R. A.; YOKOYAMA, M. Multiple cropping systems in Brazil. INTERNATIONAL WORKSHOP IN INTEGRATED PEST CONTROL FOR GRAIN LEGUMES, 1983, Goiânia. Proceedings... Brasília, DF: EMBRAPA-DDT, 1984. p. 85-92.| Tipo: Artigo em Anais de Congresso / Nota Técnica |
| Biblioteca(s): Embrapa Arroz e Feijão. |
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| Registros recuperados : 4 | |
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