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| Reis,Matheus Costa dos; Sobrinho,Fausto Souza; Ramalho,Magno Antônio Patto; Ferreira,Daniel Furtado; Ledo,Francisco José Silva; Pereira,Antônio Vander. |
| The objective of this work was to evaluate the potential of allohexaploid pearl millet x elephantgrass (HGL) population for a recurrent selection program through open-pollinated progenies. Seventy-eight progenies, one representative sample of the population, and two commercial cultivars, Pioneiro and Paraíso, were evaluated in a 9x9 triple lattice design, in two sites. Plant height and dry matter yield were evaluated in three and four cuts, respectively. For plant height, the 17 best progenies were similar to both commercial controls, while for dry matter yield they were higher than 'Paraíso' and lower than 'Pioneiro'. The correlation between progenies and cuts indicated that the fourth cut represents the mean of all cuts, and the possibility of using... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Pennisetum; Heritability; Response to selection; Split-plot lattice design. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2008000200006 |
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| Guedes,Fernando Lisboa; Souza,João Cândido de; Costa,Emiliano Fernandes Nassau; Reis,Matheus Costa dos; Cardoso,Gustavo Andrade; Ematné,Hugo Junqueira. |
| Maize crops in Brazil have a wide diversity of management systems. There is a large contingent of family agriculture, which uses little or no agricultural inputs, compared to the rural enterprise which uses the most modern production systems. This difference in the management systems is particularly noticeable in relation to consumption of fertilizers, especially nitrogenous ones. Therefore it is necessary to obtain plants with efficient nitrogen (N) use that also respond to applied nitrogen. Thus, the aim of the study was to evaluate the performance of S0:1 progenies, in top crosses, under two nitrogen levels and select the best ones based on responsiveness and efficiency. Sixty seven S0:1 progenies from populations of single cross hybrids were crossed... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Genetic breeding; Zea mays; S0:1 progenies; Tester; Abiotic stress. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542011000600011 |
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| Filho,Alano Xavier Souza; Pinho,Renzo Garcia Von; Pereira,José Luiz de Andrade Resende; Reis,Matheus Costa dos; Rezende,Adauton Vilela de; Castro Mata,Diego de. |
| The objective of this study was to evaluate the effects of stalk/leaf ratio and the stage of maturity on the digestibility of the corn plant. Hybrids AG1051, AG4051, AG5011, DOW2B710, DOW2C577, DOW2A525, NB7315 and P30F90 were used, harvested at the one-half milk line (½ ML), three-quarters milk line (¾ ML) and black layer (BL) stages. A randomized block design was used in an 8 (hybrids) × 3 (stages of maturity) factorial design, with three replications. The means generated were used for grouping into high and low stalk/leaf ratio and a new analysis of variance was generated in a 2 × 3 (two groups and three stages of maturity) factorial design. The whole plant and its stalk, leaf, husk, cob and grain components were incubated in situ in the rumen of three... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Degradable NDF; Forage digestibility; Ruminal degradability; Silage. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982011000900008 |
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| Reis,Matheus Costa dos; Souza,João Cândido de; Ramalho,Magno Antônio Patto; Guedes,Fernando Lisboa; Santos,Pedro Henrique Araújo Diniz. |
| O objetivo deste trabalho foi avaliar o progresso genético na obtenção de híbridos interpopulacionais com a seleção recorrente recíproca. Na safra 2005/2006, foram avaliados os híbridos interpopulacionais de milho (Zea mays) originados de três ciclos de seleção (0, 1 e 2) iniciados em 2003, os híbridos simples parentais e o híbrido duplo de F1, em blocos ao acaso com cinco repetições, em dois locais. Na safra seguinte, somente os híbridos interpopulacionais dos ciclos 0 e 2 foram avaliados nas mesmas condições, com 40 repetições por local. O híbrido interpopulacional apresentou desempenho equivalente ao do melhor híbrido parental simples em poucos ciclos seletivos. As estimativas do progresso genético por ciclo foram de 7,9% (ou 0,7 Mg ha-1) para... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Zea mays; Agricultura familiar; Híbrido simples; Resposta à seleção. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2009001200016 |
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