Data/hora: 09/06/2024 05:41:38

Biblioteca(s): | Embrapa Arroz e Feijão; Embrapa Unidades Centrais.
Data corrente: | 06/08/2012
Data da última atualização: | 28/02/2019
Autoria: | PINHEIRO, L. da S.; RANGEL, P. H. N.; VIANELLO, R. P.; BRONDANI, C.
Afiliação: | LETÍCIA DA SILVEIRA PINHEIRO; PAULO HIDEO NAKANO RANGEL, CNPAF; ROSANA PEREIRA VIANELLO, CNPAF; CLAUDIO BRONDANI, CNPAF.
Título: | Genetic variability of rice recurrent selection populations as affected by male sterility or manual recombination.
Ano de publicação: | 2012
Fonte/Imprenta: | Pesquisa Agropecuária Brasileira, Brasília, DF, v. 47, n. 6, p. 808-814, jun. 2012.
ISSN: | 0100-204X
Idioma: | Inglês
Conteúdo: | The objective of this work was to determine the effect of male sterility or manual recombination on genetic variability of rice recurrent selection populations. The populations CNA-IRAT 4, with a gene for male sterility, and CNA 12, which was manually recombined, were evaluated. Genetic variability among selection cycles was estimated using14 simple sequence repeat (SSR) markers. A total of 926 plants were analyzed, including ten genitors and 180 individuals from each of the evaluated cycles (1, 2 and 5) of the population CNA-IRAT 4, and 16 genitors and 180 individuals from each of the cycles (1 and 2) of CNA 12. The analysis allowed the identification of alleles not present among the genitors for both populations, in all cycles, especially for the CNA-IRAT 4 population. These alleles resulted from unwanted fertilization with genotypes that were not originally part of the populations. The parameters of Wright's F-statistic (FIS and FIT) indicated that the manual recombination expands the genetic variability of the CNA 12 population, whereas male sterility reduces the one of CNA-IRAT 4.
Thesagro: | Arroz; Marcador molecular; Melhoramento genético vegetal; Melhoramento vegetal; Oryza Sativa; Seleção recorrente.
Thesaurus Nal: | Plant breeding; Rice.

Categoria do assunto:

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F Plantas e Produtos de Origem Vegetal

URL: | http://ainfo.cnptia.embrapa.br/digital/bitstream/item/63048/1/7410.pdf
Registro original: | Embrapa Arroz e Feijão (CNPAF)

Exemplares:

AI-SEDE - (53304-1) - UPE - AP - PP - 630.72081 - P474 -  - DIS
CNPAF - (31525-1) - UPC - AP - PP - 2012 -  - 2012 - DIS