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| Registros recuperados: 45 | |
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| TORRES, G. A.; PARENTONI, S. N.; LOPES, M. A.; PAIVA, E.. |
| The objective of this study was to identify restriction fragment length polymorphism (RFLP) markers linked to QTLs that control aluminum (Al) tolerance in maize. The strategy used was bulked segregation analysis (BSA) and the genetic material utilized was an F2 population derived from a cross between the Al-susceptible inbred line L53 and Al-tolerant inbred line L1327. Both lines were developed at the National Maize and Sorghum Research Center - CNPMS/EMBRAPA. The F2 population of 1554 individuals was evaluated in a nutrient solution containing a toxic concentration of Al and relative seminal root length (RSRL) was used as a phenotype measured tolerance. The RSRL frequency distribution was continuous, but skewed towards Al-susceptible individuals.... |
| Tipo: Artigo de periódico |
Palavras-chave: Tolerancia; Maize; RFLP; Tolerance.; Alumínio; Milho; Zea Mays.; Aluminum.. |
| Ano: 1997 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/478779 |
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| FURLANI, P. R.; LIMA, M.; MIRANDA, L. T. de; MIRANDA, L. E. C.; SAWASAKI, E.; MAGNAVACA, R.. |
| Neste trabalho realizou-se a avaliacao da tolerancia a Al (4,5 mg.l) de 39 linhagens, 98 materiais comerciais, 167 progenies de uma populacao IAC-Maya e de 466 progenies de uma populacao IAC-Genetica, usando-se a tecnica de solucao nutritiva. Foram usadas na avaliacao as características ICR (indice de crescimento da radicula = comprimento relativo da radicula -CRR (CR+Al.CR-Al)- multiplicado por comprimento relativo da raiz secundaria mais longa - CRRSML (CRSML+Al/CRSML-Al) e CLR (comprimento liquido da radicula = diferenca entre os valores de comprimento da radicula - CR - obtidos no inicio e fim do periodo de crescimento das plantas em presenca de Al). As linhagens e as progenies da populacao IAC-Maya a de milho foram avaliadas através do ICR enquanto... |
| Tipo: Parte de livro |
Palavras-chave: Tolerancia; Variabilidade; Crescimento da raiz; Nutrient; Solution; Genetic; Aluminium; Tolerance.; Alumínio; Genética; Linhagem; Milho; População; Solução Nutritiva; Zea Mays.; Inbred lines; Population; Variability.; Root growth. |
| Ano: 1984 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/478622 |
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| LOPES, M. A.; MAGNAVACA, R.; BAHIA FILHO, A. F. C.; GAMA, E. E. G. e.. |
| Populacoes de milho foram avaliadas para tolerancia a toxidez de aluminio do solo utilizando o metodo de solucao nutriva. Os experimentos foram conduzidos em casa-de-vegetacao, utilizando-se o metodo descrito por Furlani & Clark (1981) e Magnavaca (1982). Foram realizados dois experimentos utilizando-se a mesma metodologia. O experimento I constituiu na avaliacao de 13 populacoes de milho, em dois niveis de aluminio na parcela e populacoes na subparcela, com 3 repeticoes por niveis de Al. As variaveis analisadas foram a percentagem de crescimento relativo de raiz seminal, peso de materia seca da parte aerea e sistema radicular. As populacoes testadas foram: CMS 30, CMS36, CMS 14, CMS 04, CMS 05, CMS 28, CMS 11, CMS 12, CMS 22, BR 126; CMS 06, CMS 07 e... |
| Tipo: Parte de livro |
Palavras-chave: Tolerancia; Maize; Aluminium; Tolerance.; Alumínio; Melhoramento; Milho; Toxidez; Zea Mays.; Breeding; Toxicity.. |
| Ano: 1984 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/477161 |
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| MAGNAVACA, R.; GARDNER, C. D.; CLARK, R. B.. |
| The original Brazilian base population Composto Amplo (CA) and a population (4CA) from the 4th cycle of selection from it for Al tolerance on an acid Brazilian Oxisol soil were compared with the population Hays Golden, Nebraska B Synthetic, Corn Belt X Brazilian and Corn Belt X Caribbean when grown in nutrient solutions containing 241 umol Al/litre Root length was slightly greater in CA than in 4CA and both had considerably longer roots than the other populations. The selection of CA for Al tolerance decreased the frequency of the most tolerant plants in favour of plants of intermediate tolerance. The CA and 4CA populations had a higher frequency of genes for Al tolerance than the other populations. The Corn Belt X Brazilian population consistently ranked... |
| Tipo: Parte de livro |
Palavras-chave: Tolerancia; Maize; Aluminium; Tolerance.; Alumínio; Milho; Zea Mays.. |
| Ano: 1987 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/478772 |
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| BRIGHENTI, A. M.; LEDO, F. J. da S.; MACHADO, J. C.; VAROTTO, Y. V. G.. |
| Abstract Elephant grass (Pennisetum purpureum Schum.) fodder productivity and quality are directly affected by weed interference. The difficulty in controlling weed species is one of the major limitations to the production and use of elephant grass as a forage crop in dairy farming and biomass for energy production. In this study, field experiments were conducted in 2014 and 2015 at two locations in Minas Gerais State, Brazil, to evaluate the tolerance of elephant grass pasture to acetolactate synthase inhibitor herbicides. The experimental pastures were treated at 1× and 2× the normal field-use rates (g ai ha-1) with metsulfuron-methyl (7.8 and 15.6), chlorimuron-ethyl (15 and 30), halosulfuron (112.5 and 225), ethoxysulfuron (150 and 300), and... |
| Tipo: Separatas |
Palavras-chave: Napier grass; Selectivity; Tolerance.; Pennisetum Purpureum.; Forage.. |
| Ano: 2017 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1067721 |
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| Registros recuperados: 45 | |
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