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Registro Completo |
Biblioteca(s): |
Embrapa Arroz e Feijão. |
Data corrente: |
02/08/2010 |
Data da última atualização: |
06/06/2022 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
FAGERIA, N. K.; MORAIS, O. P. de; SANTOS, A. B. dos. |
Afiliação: |
NAND KUMAR FAGERIA, CNPAF; ORLANDO PEIXOTO DE MORAIS, CNPAF; ALBERTO BAETA DOS SANTOS, CNPAF. |
Título: |
Nitrogen use efficiency in upland rice genotypes. |
Ano de publicação: |
2010 |
Fonte/Imprenta: |
Journal of Plant Nutrition, v. 33, n. 11, p. 1696-1711, 2010. |
DOI: |
10.1080/01904167.2010.496892 |
Idioma: |
Inglês |
Conteúdo: |
Nitrogen (N) deficiency is one of the most yield-limiting nutrients in upland rice growing regions word wide. A greenhouse experiment was conducted with the objective to evaluate nineteen upland rice (Oryza sativa. L.) genotypes for N use efficiency. The soil used in the experiment was an Oxisol and two N levels used were without N application (low level) and an application of 400 mg N kg-1 of soil (high level). Grain yield and yield components and N uptake parameters were significantly affected by N and genotype treatments. Regression analysis showed that plant height, shoot dry weight, number of panicles per pot, number of grains per panicle, grain harvest index, N uptake in shoot and grain were having significant positive relation with grain yield. Nitrogen concentration of 6.4 g kg-1 in the shoot is established as deficient level and 9.5 g kg-1 as sufficient level at harvest. Agronomic efficiency of N (grain yield/unit of N applied) and N utilization efficiency (physiological efficiency X apparent recovery efficiency) were significantly different among genotypes. These two N use efficiencies were having significant quadratic relationship with grain yield. Soil pH, exchangeable soil Ca and base saturation were having significantly positive association with grain yield. However, soil extractable phosphorus (P), potassium (K), hydrogen (H+), aluminum (Al) and cation exchange capacity were having significantly negative association with grain yield. |
Thesagro: |
Arroz; Genótipo; Nitrogênio; Nutriente; Oryza sativa; Produção. |
Thesaurus Nal: |
Grain yield; Nutrient deficiencies; Rice; Yield components. |
Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
Marc: |
LEADER 02225naa a2200277 a 4500 001 1858970 005 2022-06-06 008 2010 bl uuuu u00u1 u #d 024 7 $a10.1080/01904167.2010.496892$2DOI 100 1 $aFAGERIA, N. K. 245 $aNitrogen use efficiency in upland rice genotypes.$h[electronic resource] 260 $c2010 520 $aNitrogen (N) deficiency is one of the most yield-limiting nutrients in upland rice growing regions word wide. A greenhouse experiment was conducted with the objective to evaluate nineteen upland rice (Oryza sativa. L.) genotypes for N use efficiency. The soil used in the experiment was an Oxisol and two N levels used were without N application (low level) and an application of 400 mg N kg-1 of soil (high level). Grain yield and yield components and N uptake parameters were significantly affected by N and genotype treatments. Regression analysis showed that plant height, shoot dry weight, number of panicles per pot, number of grains per panicle, grain harvest index, N uptake in shoot and grain were having significant positive relation with grain yield. Nitrogen concentration of 6.4 g kg-1 in the shoot is established as deficient level and 9.5 g kg-1 as sufficient level at harvest. Agronomic efficiency of N (grain yield/unit of N applied) and N utilization efficiency (physiological efficiency X apparent recovery efficiency) were significantly different among genotypes. These two N use efficiencies were having significant quadratic relationship with grain yield. Soil pH, exchangeable soil Ca and base saturation were having significantly positive association with grain yield. However, soil extractable phosphorus (P), potassium (K), hydrogen (H+), aluminum (Al) and cation exchange capacity were having significantly negative association with grain yield. 650 $aGrain yield 650 $aNutrient deficiencies 650 $aRice 650 $aYield components 650 $aArroz 650 $aGenótipo 650 $aNitrogênio 650 $aNutriente 650 $aOryza sativa 650 $aProdução 700 1 $aMORAIS, O. P. de 700 1 $aSANTOS, A. B. dos 773 $tJournal of Plant Nutrition$gv. 33, n. 11, p. 1696-1711, 2010.
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Embrapa Arroz e Feijão (CNPAF) |
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| Acesso ao texto completo restrito à biblioteca da Embrapa Meio-Norte. Para informações adicionais entre em contato com cpamn.biblioteca@embrapa.br. |
Registro Completo
Biblioteca(s): |
Embrapa Meio-Norte; Embrapa Recursos Genéticos e Biotecnologia. |
Data corrente: |
30/11/2015 |
Data da última atualização: |
25/05/2022 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
A - 1 |
Autoria: |
CARVALHO, G. M. C.; PAIVA, S. R.; ARAUJO, A. M. de; MARIANTE, A. da S.; BLACKBURN, H. D. |
Afiliação: |
GERALDO MAGELA CORTES CARVALHO, CPAMN; SAMUEL REZENDE PAIVA, SRI; ADRIANA MELLO DE ARAUJO, CPAMN; ARTHUR DA SILVA MARIANTE, CENARGEN; H. D. Blackburn, National Animal Germplasm Program, Agricultural Research Service, USDA, Fort Collins, CO 80521. |
Título: |
Genetic structure of goat breeds from Brazil and the United States: Implications for conservation and breeding programs |
Ano de publicação: |
2015 |
Fonte/Imprenta: |
Journal of Animal Science, Madison, v. 93, n. 10, p. 4629-4636, Sep. 2015. |
ISSN: |
0021-8812 |
DOI: |
10.2527/jas.2015-8974 |
Idioma: |
Inglês |
Conteúdo: |
The objective of this study was to assess genetic diversity among 5 Brazilian (155 animals) and 5 U.S. goat (120 animals) breeds using 23 microsatellite markers. Samples from the United States represented a broad geographic distribution whereas Brazilian samples were from the northeast region. Samples from Boer were common to each country?s breed count. Expected and observed heterozygosity among breeds ranged from 0.55 to 0.72, suggesting ample genetic diversity in the breeds evaluated. United States Angora, U.S. Spanish, and Brazilian Nambi ranked highest for allelic richness, averaging 6.1, 7.1, and 6.5 alleles per locus, respectively. Angora and Spanish also ranked highest in private alleles (7 and 9, respectively). Using STRUCTURE, the U.S. Spanish were also found to share a common cluster assignment with Brazilian Nambi, suggesting that progenitor breeds may have been the same and passed through the Canary Islands or Cape Verde in route to the New World. When non-Boer breeds were pooled by country, the effect of the subpopulation compared with total population (Fst) = 0.05, suggesting minor genetic differences exist between countries. The lack of genetic structure among goat breeds when compared with other species (e.g., Bos taurus vs. Bos indicus) suggests goat breeds may exhibit a plasticity that facilitates productivity across a wide range of countries and environments. Taken a step further, the concept of breed for meat goats may not be as relevant for goat production. MenosThe objective of this study was to assess genetic diversity among 5 Brazilian (155 animals) and 5 U.S. goat (120 animals) breeds using 23 microsatellite markers. Samples from the United States represented a broad geographic distribution whereas Brazilian samples were from the northeast region. Samples from Boer were common to each country?s breed count. Expected and observed heterozygosity among breeds ranged from 0.55 to 0.72, suggesting ample genetic diversity in the breeds evaluated. United States Angora, U.S. Spanish, and Brazilian Nambi ranked highest for allelic richness, averaging 6.1, 7.1, and 6.5 alleles per locus, respectively. Angora and Spanish also ranked highest in private alleles (7 and 9, respectively). Using STRUCTURE, the U.S. Spanish were also found to share a common cluster assignment with Brazilian Nambi, suggesting that progenitor breeds may have been the same and passed through the Canary Islands or Cape Verde in route to the New World. When non-Boer breeds were pooled by country, the effect of the subpopulation compared with total population (Fst) = 0.05, suggesting minor genetic differences exist between countries. The lack of genetic structure among goat breeds when compared with other species (e.g., Bos taurus vs. Bos indicus) suggests goat breeds may exhibit a plasticity that facilitates productivity across a wide range of countries and environments. Taken a step further, the concept of breed for meat goats may not be as relevant for goat producti... Mostrar Tudo |
Palavras-Chave: |
Breeding strategies; Conservação genética; Conservation genetics; Diversidade genética; Estratégia de melhoramento; Genetic diversity; Goat. |
Thesagro: |
Cabra; Capra Hircus. |
Categoria do assunto: |
G Melhoramento Genético |
Marc: |
LEADER 02448naa a2200301 a 4500 001 2030056 005 2022-05-25 008 2015 bl uuuu u00u1 u #d 022 $a0021-8812 024 7 $a10.2527/jas.2015-8974$2DOI 100 1 $aCARVALHO, G. M. C. 245 $aGenetic structure of goat breeds from Brazil and the United States$bImplications for conservation and breeding programs$h[electronic resource] 260 $c2015 520 $aThe objective of this study was to assess genetic diversity among 5 Brazilian (155 animals) and 5 U.S. goat (120 animals) breeds using 23 microsatellite markers. Samples from the United States represented a broad geographic distribution whereas Brazilian samples were from the northeast region. Samples from Boer were common to each country?s breed count. Expected and observed heterozygosity among breeds ranged from 0.55 to 0.72, suggesting ample genetic diversity in the breeds evaluated. United States Angora, U.S. Spanish, and Brazilian Nambi ranked highest for allelic richness, averaging 6.1, 7.1, and 6.5 alleles per locus, respectively. Angora and Spanish also ranked highest in private alleles (7 and 9, respectively). Using STRUCTURE, the U.S. Spanish were also found to share a common cluster assignment with Brazilian Nambi, suggesting that progenitor breeds may have been the same and passed through the Canary Islands or Cape Verde in route to the New World. When non-Boer breeds were pooled by country, the effect of the subpopulation compared with total population (Fst) = 0.05, suggesting minor genetic differences exist between countries. The lack of genetic structure among goat breeds when compared with other species (e.g., Bos taurus vs. Bos indicus) suggests goat breeds may exhibit a plasticity that facilitates productivity across a wide range of countries and environments. Taken a step further, the concept of breed for meat goats may not be as relevant for goat production. 650 $aCabra 650 $aCapra Hircus 653 $aBreeding strategies 653 $aConservação genética 653 $aConservation genetics 653 $aDiversidade genética 653 $aEstratégia de melhoramento 653 $aGenetic diversity 653 $aGoat 700 1 $aPAIVA, S. R. 700 1 $aARAUJO, A. M. de 700 1 $aMARIANTE, A. da S. 700 1 $aBLACKBURN, H. D. 773 $tJournal of Animal Science, Madison$gv. 93, n. 10, p. 4629-4636, Sep. 2015.
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