Seleção entre e dentro de progênies de meios irmãos de nabo forrageiro (Raphanus Sativus L. var. oleiferus Metzg.) cultivar CATI Al 1000
Arquivos
Data
2008-12-19
Autores
Título da Revista
ISSN da Revista
Título de Volume
Editor
Universidade Estadual Paulista (Unesp)
Resumo
O presente trabalho teve como objetivo avaliar 100 progênies de meios irmãos da população de nabo forrageiro (Raphanus sativus L. var. oleiferus Metzg.), cultivar CATI AL 1000 em dois ciclos de seleção entre e dentro de progênies de meios irmãos, para as características: ciclo das plantas, altura das plantas, produtividade de grãos, massa de 1000 grãos, teor de óleo no grão e produtividade de óleo, na Fazenda Experimental São Manuel, no município de São Manuel – SP, no ano de 2004, e na Fazenda Experimental Lageado, no município de Botucatu – SP, no ano de 2005, 2006, e 2007, pertencentes a Faculdade de Ciências Agronômicas – campus de Botucatu – SP, da Universidade Estadual Paulista “Júlio de Mesquita Filho”. Foram avaliadas 100 progênies de meios irmãos de nabo forrageiro cultivar CATI AL 1000, em ensaio de competição, distribuídas em delineamento látice 10x10, parcialmente balanceado, com três repetições. As progênies superiores foram recombinadas e selecionadas no ano agrícola seguinte obtendo um ciclo a cada dois anos. Foram realizados dois ciclos de seleção. Os dados coletados a campo, para todas as características, foram padronizados seguindo a metodologia recomendada, e submetidos a análise de variância e testes de médias. Foram obtidas as correlações entre os caracteres e obtidas as estimativas de parâmetros genéticos. Para todas as características avaliadas, foi identificada a presença de variabilidade genética, decrescendo no segundo ciclo de seleção, entre as progênies de meios irmãos. Foram observados ganhos genéticos de 8,96, 18,47, 93,29, 12,51, e 69,11 %, para as características avaliadas: altura das plantas, massa de 1000 grãos, produção de grãos, teor de óleo do grão, e produtividade de grão, respectivamente. Observou-se correlação negativa e significativa entre produtividade de grãos e teor de óleo...
The purpose of the present research was evaluate100 half-sib progenies of the population of wild radish (Raphanus sativus L. var. Oleiferus Metzg.) Cultivar CATI AL 1000 in two cycles of selection, among and within half-sib progenies for characteristics: cycle of plants, plant height, grain yield, 1000 grain weight, grain oil content and oil yield in the Experimental Farm San Manuel, in Sao Manuel - SP, in 2004, and in the Farm Experimental Lageado, in Botucatu - SP, in 2005, 2006 and 2007, at Faculdade de Ciencias Agronomicas – Botucatu campus - SP, Universidade Estadual Paulista Julio de Mesquita Filho”. In this study, were evaluated 100 half-sib progenies of wild radish cultivar CATI AL 1000, in an essay competition, distributed in a 10x10 lattice, partially balanced, with three replications. The selected progenies were recombined and selected in the following crop year obtaining a cycle every two years. There were two cycles of selection. For all traits, the data collected at the field were patterned according to recommended methodology, and subjected to analysis of variance and multiple comparisons. The correlations between the characters and the estimates of genetic parameters were obtained. For all traits, the presence of genetic variability was identified, decreasing in the second cylce of selection, among the half-sib progenies. Genetic gains of 8.96, 18.47, 93.29, 12.51 were observed, and 69.11% for the characteristics evaluated: plant height, 1000 grain weight, grain yield, oil content of grain, and grain yield, respectively.There was negative correlation between grain yield and grain oil content, plant height and mass of 1000 grains, and positive and significant relationship between grain yield and plant height, also 1000 grain weight and oil content of grain. The genetic parameters values decreased from cycle I to cycle II, but the high magnitudes calculated in the second... (Complete abstract click electronic access below)
The purpose of the present research was evaluate100 half-sib progenies of the population of wild radish (Raphanus sativus L. var. Oleiferus Metzg.) Cultivar CATI AL 1000 in two cycles of selection, among and within half-sib progenies for characteristics: cycle of plants, plant height, grain yield, 1000 grain weight, grain oil content and oil yield in the Experimental Farm San Manuel, in Sao Manuel - SP, in 2004, and in the Farm Experimental Lageado, in Botucatu - SP, in 2005, 2006 and 2007, at Faculdade de Ciencias Agronomicas – Botucatu campus - SP, Universidade Estadual Paulista Julio de Mesquita Filho”. In this study, were evaluated 100 half-sib progenies of wild radish cultivar CATI AL 1000, in an essay competition, distributed in a 10x10 lattice, partially balanced, with three replications. The selected progenies were recombined and selected in the following crop year obtaining a cycle every two years. There were two cycles of selection. For all traits, the data collected at the field were patterned according to recommended methodology, and subjected to analysis of variance and multiple comparisons. The correlations between the characters and the estimates of genetic parameters were obtained. For all traits, the presence of genetic variability was identified, decreasing in the second cylce of selection, among the half-sib progenies. Genetic gains of 8.96, 18.47, 93.29, 12.51 were observed, and 69.11% for the characteristics evaluated: plant height, 1000 grain weight, grain yield, oil content of grain, and grain yield, respectively.There was negative correlation between grain yield and grain oil content, plant height and mass of 1000 grains, and positive and significant relationship between grain yield and plant height, also 1000 grain weight and oil content of grain. The genetic parameters values decreased from cycle I to cycle II, but the high magnitudes calculated in the second... (Complete abstract click electronic access below)
Descrição
Palavras-chave
Plantio direto, Seleção de plantas - Melhoramento genetico, Produtividade, Nabo forrageiro - Genética, Fodder radish, Half sib progenies, Selection, Variability
Como citar
SÁ, Rogério Oliveira de. Seleção entre e dentro de progênies de meios irmãos de nabo forrageiro (Raphanus Sativus L. var. oleiferus Metzg.) cultivar CATI Al 1000. 2008. vi, 69 f. Tese (doutorado) - Universidade Estadual Paulista, Faculdade de Ciências Agronômicas, 2008.