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Provedor de dados:  Repositório Alice
País:  Brazil
Título:  Selection strategies of segregant soybean populations for resistance to Asian rust.
Autores:  RIBEIRO, A. S.
TOLEDO, J. F. F. de
RAMALHO, M. A. P.
Data:  2010-03-19
Ano:  2009
Palavras-chave:  Phakopsora pachyrhizi
Selection
Glycine max
Heritability
Resumo:  Abstract - The objective of this work was to identify the for the more promising parental combinations to obtain lines with good resistance to soybean Asian rust (Phakopsora pachyrhizi). Two experiments were carried out in the field during the 2006/2007 and 2007/2008 growing seasons, to determine the percentage of infected leaf area of individual plants of five parents and their segregant F2 and F3 populations. The data obtained indicates that additive genetic variance predominates in the control of soybean resistance to Asian rust, and that the year and time of assessment do not significantly influence the estimates of the genetic parameters obtained. The narrow-sense heritability (h2r) ranged from 23.12 to 55.83%, and indicates the possibility of successful selection of resistant individuals in the early generations of the breeding program. All the procedures used to select the most promising populations to generate superior inbred lines for resistance to P. pachyrhizi presented similar results and identified the BR01-18437 x BRS 232 population as the best for inbred line selection.

2009
Tipo:  Artigo em periódico indexado (ALICE)
Idioma:  Inglês
Identificador:  47305

http://www.alice.cnptia.embrapa.br/handle/doc/661931

http://ainfo.cnptia.embrapa.br/digital/bitstream/AI-SEDE-2010/47305/1/44n11a12.pdf
Editor:  Pesquisa Agropecuária Brasileira, Brasília, DF, v. 44, n. 11, p. 1452-1459, nov. 2009
Relação:  Área de Informação da Sede - Artigo em periódico indexado (ALICE)
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