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Item Desempenho de famílias de feijoeiro comum obtidas por diferentes métodos de condução de populações segregantes.(Universidade Federal de Goiás, 2009-12-18) SILVA, Adélia Cristina Fernandes; BASSINELLO, Priscila Zaczuk; http://lattes.cnpq.br/7932216023958412; MELO, Leonardo Cunha; http://lattes.cnpq.br/9132553601896172; MELO, Patrícia Guimarães Santos; http://lattes.cnpq.br/1508679345970114The common bean (Phaseolus vulgaris L.) stands out in Brazil because of its economic and, above all social importance, being an essential source of fiber of the human daily diet. To quantify the fiber content and the genetic variability in Brazilian genotypes is very important because it can ensure the success of breeding programs, evaluating the relative efficiency of the methods for conducting segregating populations. The objective of this research was to compare the genetic potential of segregating populations of the common bean submitted to different breeding methods for the character of crude fiber content and grain yield. Families were obtained by hybridization between the lines CNFC 7812 and CNFC 7829 with 12.7% and 17% of fiber content respectively. The families were conducted by three different breeding methods: Bulk, Bulk within F2 and SSD until the F7 generation. The design to analyze the families was the 14x14 lattice with three replications, conducted in two locations: Santo Antonio/GO and Ponta Grossa/PR. The crude fiber content and grain yield were evaluated in all families from the three methods. The components of variance, genetic and phenotypical parameters were then estimated from the mean square expected values. Based on the results, it can be concluded that for the crude fiber character and the grain yield, the best method was the Bulk within families, which generated the greatest number of families of high rank characteristic. In this research, this method therefore was superior for both SSD and Bulk methods. It was observed among the evaluated families obtained from the crossing CNFC 7812 x CNFC 7829, enough genetic variability to be explored for the characters of crude fiber content and grain yield.Item Eficiência de métodos de condução de população segregante de feijoeiro comum para teor de proteína.(Universidade Federal de Goiás, 2007-07-05) SILVA, Gláucio Freitas Oliveira e; MELO, Leonardo Cunha; http://lattes.cnpq.br/9132553601896172; BASSINELLO, Priscila Zaczuk; http://lattes.cnpq.br/7932216023958412; MELO, Patrícia Guimarães Santos; http://lattes.cnpq.br/1508679345970114The common bean (Phaseolus vulgaris L.) is part of the daily diet of more than 300 million people worldwide, being an essential food for low income human populations, since it is a cheaper protein source. The beans protein content can be improved by breeding programs since the existence of genetic variability for this character can be explored. It is important to have the relative efficiency of the available methods evaluated. The objective of this research was to evaluate the genetic potential for protein content of segregant populations of common beans submitted to different breeding methods and evaluate the potential of the populations of the bulk method inside F2 families for the traits yield and flowering. The parental utilized in this study was from the bean group carioca , CNFC 7812 with 23% of total protein content and CNFC 8056 with 23% of total protein content. Starting with the F1 generation, was obtained the segregant population F2, witch were selected 150 plants wich families was utilized to produce the populations by three methods: Bulk, Bulk within of F2 and SSD method until the F5 generation. The average protein content of the families obtained by this cross was 16,58% for the method SSD, 20,37% for the method Bulk e 20,44% for the Bulk F2:5. Based on the results, it could be concluded that the best method for protein content was the Bulk method, on account of its easiness and its generation of a larger number of families superior than the best parental and the average of the genitors. Among the evaluated families there is enough genetic variability to be explored for the characters protein, grain yield and flowering.