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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: |
LEADER 02722naa a2200289 a 4500
001 2171114
005 2025-01-03
008 2024 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1111/grs.12418$2DOI
100 1 $aCONRADO, J. A. A.
245 $aMethods for prediction of morphophysiological variables of Brachiaria decumbens grass.$h[electronic resource]
260 $c2024
520 $aAbstract: 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.
650 $aBiomass production
650 $aBrazil
650 $aForage production
650 $aGrazing
650 $aLeaf area index
650 $aPhotosynthesis
650 $aBrachiaria Decumbens
650 $aCapim Brachiaria
653 $aBasilisk
653 $aGrowth index
700 1 $aLOPES, M. N.
700 1 $aPOMPEU, R. C. F. F.
700 1 $aCÂNDIDO, M. J. D.
773 $tGrassland Science$gv. 70, n. 2, p. 51–66, Apr. 2024.
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Embrapa Caprinos e Ovinos (CNPC) |
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| 1. |  | KÜCKELHAUS, S. A. S.; LEITE, J. R. S. A.; MUNIZ JUNQUEIRA, M. I.; SAMPAIO, R. N.; BLOCH JUNIOR, C.; TOSTA, C. E. Antiplasmodial and antileishmanial activities of phylloseptin-1, an antimicrobial peptide from the skin secretion of Phyllomedusa azurea (Amphibia). Experimental Parasitology, v. 123, p. 11-16, 2009.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 2 |
| Biblioteca(s): Embrapa Recursos Genéticos e Biotecnologia. |
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| 2. | | DUARTE, I.; BORGES, T. K.; FRIAÇA, L.; RAMOS, B.; LEITE, L.; CORAZZA, D.; PINELI, L.; MUNIZ-JUNQUEIRA, M. I.; COSTA, A. M. Effect of acute consumption of passiflora setacea juice on the phagocytic capacity and production of free radicals by monocytes in overweight individual. In: INTERNATIONAL CONFERENCE ON POLYPHENOLS AND HEALTH, 7., 2015, Paris. Abstracts... Paris: ICPH, 2015. p. 195.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Cerrados. |
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| 3. | | KÜCKELHAUS, S. A. S.; AQUINO, D. S. de; BORGES, T. K.; MOREIRA, D. C.; LEITE, L. de M.; MUNIZ-JUNQUEIRA, M. I.; KÜCKELHAUS, C. S.; ROMERO, G. A. S.; PRATES, M. V.; BLOCH JUNIOR, C.; LEITE, J. R. S. A. Phylloseptin-1 is Leishmanicidal for Amastigotes of Leishmania amazonensis inside infected macrophages. International Journal of Environmental Research and Public Health, v. 17, n. 13, article 4856, 2020.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 2 |
| Biblioteca(s): Embrapa Recursos Genéticos e Biotecnologia. |
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| Registros recuperados : 3 | |
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