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 | Acesso ao texto completo restrito à biblioteca da Embrapa Caprinos e Ovinos. Para informações adicionais entre em contato com cnpc.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Caprinos e Ovinos. |
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Data corrente: |
02/01/2025 |
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Data da última atualização: |
03/01/2025 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
CONRADO, J. A. A.; LOPES, M. N.; POMPEU, R. C. F. F.; CÂNDIDO, M. J. D. |
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Afiliação: |
JEFTE A. A. CONRADO, FEDERAL UNIVERSITY OF CEARÁ; MARCOS N. LOPES, FEDERAL INSTITUTE OF EDUCATION, SCIENCE AND TECHNOLOGY OF PIAUI; ROBERTO CLAUDIO FERNANDES F POMPEU, CNPC; MAGNO J. D. CÂNDIDO, FEDERAL UNIVERSITY OF CEARÁ. |
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Título: |
Methods for prediction of morphophysiological variables of Brachiaria decumbens grass. |
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Ano de publicação: |
2024 |
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Fonte/Imprenta: |
Grassland Science, v. 70, n. 2, p. 51–66, Apr. 2024. |
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DOI: |
https://doi.org/10.1111/grs.12418 |
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Idioma: |
Inglês |
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Conteúdo: |
Abstract: The purpose of this study was to evaluate different methodologies used in the field in order to find the one that could most effectively relate to the morphophysiological condition of Brachiaria decumbens cv. Basilisk (syn. Urochloa decumbens cv. Basilisk Stapf R.D. Webster). Two light interception frequencies (LI, 85% and 95%) and two defoliation intensities were adopted as targets for the residual leaf area index (RLAI 1.3 and 1.8). The treatments consisted of evaluating different methods of measuring the canopy height (CH) through its ability to correlate with the morphophysiological variables of species B. decumbens cv. Basilisk. High correlations between the methods CH, compressed height (CHe), weighted height 1 (WH1) and weighted height 8 (WH8) were observed mainly with the variables total forage biomass (TFB) and leaf area index (LAI) in both residual and pre-grazing conditions. The path analysis showed degrees of multicollinearity, which determined the use of the “k” constants in order to correct the distortions of the diagonal elements of the correlation matrix X'X. Path analysis provided direct cause/effect indexes on TFB using LAI = 0.1435, photosynthesis (A) = −0.1061, CH = 0.1616, CHe = 0.0913, WH1 = 0.1386 and WH8 = 0.0575; on LAI using CH = 0.2404, CHe = 0.2164, WH1 = 0.2307 and WH8 = 0.2183; and on photosynthesis rate (A) using LAI = 0.2895, CH = 0.0203, CHe = −0.1170, WH1 = 0.0352 and WH8 = 0.0937. Similarity was observed between intercepts and slope coefficients for TFB prediction using CH, CHe, WH1 and WH8, providing mean values of 1069.57 and 204.06, respectively. Methods CH and WH1 presented a significant correlation with most morphophysiological variables and can be used to quantify TFB and LAI, while CH and WH8 can be used only for TFB. MenosAbstract: The purpose of this study was to evaluate different methodologies used in the field in order to find the one that could most effectively relate to the morphophysiological condition of Brachiaria decumbens cv. Basilisk (syn. Urochloa decumbens cv. Basilisk Stapf R.D. Webster). Two light interception frequencies (LI, 85% and 95%) and two defoliation intensities were adopted as targets for the residual leaf area index (RLAI 1.3 and 1.8). The treatments consisted of evaluating different methods of measuring the canopy height (CH) through its ability to correlate with the morphophysiological variables of species B. decumbens cv. Basilisk. High correlations between the methods CH, compressed height (CHe), weighted height 1 (WH1) and weighted height 8 (WH8) were observed mainly with the variables total forage biomass (TFB) and leaf area index (LAI) in both residual and pre-grazing conditions. The path analysis showed degrees of multicollinearity, which determined the use of the “k” constants in order to correct the distortions of the diagonal elements of the correlation matrix X'X. Path analysis provided direct cause/effect indexes on TFB using LAI = 0.1435, photosynthesis (A) = −0.1061, CH = 0.1616, CHe = 0.0913, WH1 = 0.1386 and WH8 = 0.0575; on LAI using CH = 0.2404, CHe = 0.2164, WH1 = 0.2307 and WH8 = 0.2183; and on photosynthesis rate (A) using LAI = 0.2895, CH = 0.0203, CHe = −0.1170, WH1 = 0.0352 and WH8 = 0.0937. Similarity was observed between intercepts and slo... Mostrar Tudo |
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Palavras-Chave: |
Basilisk; Growth index. |
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Thesagro: |
Brachiaria Decumbens; Capim Brachiaria. |
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Thesaurus Nal: |
Biomass production; Brazil; Forage production; Grazing; Leaf area index; Photosynthesis. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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Marc: |
null
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Registro original: |
Embrapa Caprinos e Ovinos (CNPC) |
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| Registros recuperados : 3 | |
| 1. |  | TREML, D.; VENTURELLI, G. L.; BROD, F. C. A.; FARIA, J. C.; ARISI, A. C. M. Development of an event-specific hydrolysis probe quantitative real-time polymerase chain reaction assay for Embrapa 5.1 genetically modified common bean (Phaseolus vulgaris). Journal of Agricultural and Food Chemistry, Easton, v. 62, n. 49, p. 11994-12000, Dec. 2014.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 1 |
| Biblioteca(s): Embrapa Arroz e Feijão. |
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| 2. | | VENTURELLI, G. L.; SILVA, K. J. da; TREML, D.; NAVAS, P. B.; VARGAS, M. O.; BISCHOFF, J. L.; FARIA, J. C. de; ARISI, A. C. M. New plasmid calibrators for geminivirus-resistant (EMB-PV051-1 event) common bean (Phaseolus vulgaris L.) quantitation using simplex and duplex qPCR. Food Bioscience, v. 26, p. 145-151, Dec. 2018.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 2 |
| Biblioteca(s): Embrapa Arroz e Feijão. |
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| 3. | | DINON, A. Z.; BROD, F. C. A.; MELLO, C. S.; SILVEIRA, J. C. M.; KOLLING, D. J.; TREML, D.; FARIA, J. C.; ARISI, A. C. M. Primer development for detection of Phaseolus vulgaris and Olathe transgenic bean. In: SIMPÓSIO BRASILEIRO DE GENÉTICA MOLECULAR DE PLANTAS, 3., 2011, Ilhéus. Resumos... Ribeirão Preto: Sociedade Brasileira de Genética, 2011. 1 CD-ROM.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Arroz e Feijão. |
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| Registros recuperados : 3 | |
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| Nenhum registro encontrado para a expressão de busca informada. |
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