Eficiência de métodos de condução de população segregante de feijoeiro comum para teor de proteína.
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Data
2007-07-05
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Universidade Federal de Goiás
Resumo
The 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.
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SILVA, Gláucio Freitas Oliveira e. Efficiency evaluation of conducting methods for segregant population of common bean by the protein meaning. 2007. 49 f. Dissertação (Mestrado em Ciências Agrárias) - Universidade Federal de Goiás, Goiânia, 2007.