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Registro Completo |
Biblioteca(s): |
Embrapa Agrossilvipastoril. |
Data corrente: |
18/12/2014 |
Data da última atualização: |
31/05/2017 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
MARTINS, L. E. C.; MONTEIRO, F. A.; PEDREIRA, B. C. e. |
Afiliação: |
BRUNO CARNEIRO E PEDREIRA, CPAMT. |
Título: |
Metabolic change, tillering And root system of brachiaria Brizantha in response to Phosphorus and zinc nutrition. |
Ano de publicação: |
2014 |
Fonte/Imprenta: |
Journal of Plant Nutrition, London, v. 37, n. 4, p. 509-519, fev. 2014 |
ISSN: |
0190-4167 |
DOI: |
10.1080/01904167.2013.867979 |
Idioma: |
Inglês |
Conteúdo: |
Phosphorus (P) and zinc (Zn) availabilities are important to the nutrition of tropical forage grasses. In this manner, this study aimed to identify and quantify changes in metabolism, tillering, and root system of Brachiaria brizanthacv. ?Marandu? related to P and Zn availabilities. Plants of B. brizanthacv. ?Marandu? were grown in nutrient solution under five rates of P (0.1, 0.6, 1.1, 1.6, and 2.1 mmol L−1) and five rates of Zn (0.00, 0.75, 1.5, 2.25, and 3.00μmol L −1 ), in a fractionated factorial. The interaction Px Zn rates and the Zn supply were not significant for the activity of acid phosphatase enzyme, P-use index, number of tillers, and root parameters. P-use index and enzyme activity decreased as P availability increased. The high efficiency in P use was a result of high acid phosphatase activity and P supply was essential to the development of ?Marandu? palisadegrass root system. |
Palavras-Chave: |
Enzyme; Root length. |
Thesagro: |
Enzima; Fosfatase ácida; Fósforo. |
Thesaurus Nal: |
Acid phosphatase; Phosphorus. |
Categoria do assunto: |
-- |
Marc: |
LEADER 01690naa a2200253 a 4500 001 2003168 005 2017-05-31 008 2014 bl uuuu u00u1 u #d 022 $a0190-4167 024 7 $a10.1080/01904167.2013.867979$2DOI 100 1 $aMARTINS, L. E. C. 245 $aMetabolic change, tillering And root system of brachiaria Brizantha in response to Phosphorus and zinc nutrition.$h[electronic resource] 260 $c2014 520 $aPhosphorus (P) and zinc (Zn) availabilities are important to the nutrition of tropical forage grasses. In this manner, this study aimed to identify and quantify changes in metabolism, tillering, and root system of Brachiaria brizanthacv. ?Marandu? related to P and Zn availabilities. Plants of B. brizanthacv. ?Marandu? were grown in nutrient solution under five rates of P (0.1, 0.6, 1.1, 1.6, and 2.1 mmol L−1) and five rates of Zn (0.00, 0.75, 1.5, 2.25, and 3.00μmol L −1 ), in a fractionated factorial. The interaction Px Zn rates and the Zn supply were not significant for the activity of acid phosphatase enzyme, P-use index, number of tillers, and root parameters. P-use index and enzyme activity decreased as P availability increased. The high efficiency in P use was a result of high acid phosphatase activity and P supply was essential to the development of ?Marandu? palisadegrass root system. 650 $aAcid phosphatase 650 $aPhosphorus 650 $aEnzima 650 $aFosfatase ácida 650 $aFósforo 653 $aEnzyme 653 $aRoot length 700 1 $aMONTEIRO, F. A. 700 1 $aPEDREIRA, B. C. e 773 $tJournal of Plant Nutrition, London$gv. 37, n. 4, p. 509-519, fev. 2014
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Registro original: |
Embrapa Agrossilvipastoril (CPAMT) |
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Registro Completo
Biblioteca(s): |
Embrapa Milho e Sorgo. |
Data corrente: |
14/12/2017 |
Data da última atualização: |
14/12/2017 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
A - 2 |
Autoria: |
SILVA, V. B.; DAHER, R. F.; ARAÚJO, M. S. B.; SOUZA, Y. P.; CASSARO, S.; MENEZES, B. R. S.; GRAVINA, L. M.; NOVO, A. A. C.; TARDIN, F. D.; AMARAL JÚNIOR, A. T. |
Afiliação: |
Universidade Estadual do Norte Fluminense Darcy Ribeiro; Universidade Estadual do Norte Fluminense Darcy Ribeiro; Universidade Estadual do Norte Fluminense Darcy Ribeiro; Universidade Estadual do Norte Fluminense Darcy Ribeiro; Universidade Estadual do Norte Fluminense Darcy Ribeiro; Universidade Federal Rural do Rio de Janeiro; Universidade Estadual do Norte Fluminense Darcy Ribeiro; Universidade Estadual do Norte Fluminense Darcy Ribeiro; FLAVIO DESSAUNE TARDIN, CNPMS; Universidade Estadual do Norte Fluminense Darcy Ribeiro. |
Título: |
Prediction of genetic gains by selection indices using mixed models in elephant grass for energy purposes. |
Ano de publicação: |
2017 |
Fonte/Imprenta: |
Genetics and Molecular Research, Ribeirão Preto, v. 16, n. 3, p. 1-8, 2017. |
DOI: |
10.4238/gmr16039781 |
Idioma: |
Inglês |
Conteúdo: |
Genetically improved cultivars of elephant grass need to be adapted to different ecosystems with a faster growth speed and lower seasonality of biomass production over the year. This study aimed to use selection indices using mixed models (REML/BLUP) for selecting families and progenies within full-sib families of elephant grass (Pennisetum purpureum) for biomass production. One hundred and twenty full-sib progenies were assessed from 2014 to 2015 in a randomized block design with three replications. During this period, the traits dry matter production, the number of tillers, plant height, stem diameter, and neutral detergent fiber were assessed. Families 3 and 1were the best classified, being the most indicated for selection effect. Progenies 40, 45, 46, and 49 got the first positions in the three indices assessed in the first cut. The gain for individual 40 was 161.76% using Mulamba and Mock index. The use of selection indices using mixed models is advantageous in elephant grass since they provide high gains with the selection, which are distributed among all the assessed traits in the most appropriate situation to breeding programs. |
Palavras-Chave: |
Matriz de energia; Modelo misto. |
Thesagro: |
Capim elefante; Energia; Índice de Seleção. |
Categoria do assunto: |
G Melhoramento Genético |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/169052/1/Prediction-genetic.pdf
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Marc: |
LEADER 02061naa a2200301 a 4500 001 2082611 005 2017-12-14 008 2017 bl uuuu u00u1 u #d 024 7 $a10.4238/gmr16039781$2DOI 100 1 $aSILVA, V. B. 245 $aPrediction of genetic gains by selection indices using mixed models in elephant grass for energy purposes.$h[electronic resource] 260 $c2017 520 $aGenetically improved cultivars of elephant grass need to be adapted to different ecosystems with a faster growth speed and lower seasonality of biomass production over the year. This study aimed to use selection indices using mixed models (REML/BLUP) for selecting families and progenies within full-sib families of elephant grass (Pennisetum purpureum) for biomass production. One hundred and twenty full-sib progenies were assessed from 2014 to 2015 in a randomized block design with three replications. During this period, the traits dry matter production, the number of tillers, plant height, stem diameter, and neutral detergent fiber were assessed. Families 3 and 1were the best classified, being the most indicated for selection effect. Progenies 40, 45, 46, and 49 got the first positions in the three indices assessed in the first cut. The gain for individual 40 was 161.76% using Mulamba and Mock index. The use of selection indices using mixed models is advantageous in elephant grass since they provide high gains with the selection, which are distributed among all the assessed traits in the most appropriate situation to breeding programs. 650 $aCapim elefante 650 $aEnergia 650 $aÍndice de Seleção 653 $aMatriz de energia 653 $aModelo misto 700 1 $aDAHER, R. F. 700 1 $aARAÚJO, M. S. B. 700 1 $aSOUZA, Y. P. 700 1 $aCASSARO, S. 700 1 $aMENEZES, B. R. S. 700 1 $aGRAVINA, L. M. 700 1 $aNOVO, A. A. C. 700 1 $aTARDIN, F. D. 700 1 $aAMARAL JÚNIOR, A. T. 773 $tGenetics and Molecular Research, Ribeirão Preto$gv. 16, n. 3, p. 1-8, 2017.
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Embrapa Milho e Sorgo (CNPMS) |
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