Data/hora: 15/06/2024 09:06:15

Biblioteca(s): | Embrapa Cerrados.
Data corrente: | 16/01/2008
Data da última atualização: | 18/04/2024
Autoria: | SILVA, S. A. da; SOUZA, P. I. de M. de; VIANNA, G. R.; LEONARDECZ, E.; MOREIRA, C. T.; FALEIRO, F. G.; NUNES JÚNIOR, J.; MONTEIRO, P. M. F. O.; RECH FILHO, E. L.; ARAGÃO, F. J. L.
Afiliação: | SERGIO ABUD DA SILVA, CPAC; PLINIO ITAMAR DE MELLO DE SOUZA, CPAC; GIOVANNI RODRIGUES VIANNA, CENARGEN; E. LEONARDECZ, UNIVERSIDADE CATÓLICA DE BRASÍLIA; CLAUDETE TEIXEIRA MOREIRA, CPAC; FABIO GELAPE FALEIRO, CPAC; J. NUNES JÚNIOR, CENTRO TECNOLÓGICO PARA PESQUISAS AGROPECUÁRIAS; P. M. F. O. MONTEIRO; ELIBIO LEOPOLDO RECH FILHO, CENARGEN; FRANCISCO JOSE LIMA ARAGAO, CENARGEN.
Título: | Gene flow from transgenic to nontransgenic soybean plants in the Cerrado region of Brazil.
Ano de publicação: | 2007
Fonte/Imprenta: | Genetics and Molecular Research, v. 6, n. 2, p. 345-352, 2007.
ISSN: | 1676-5680
Idioma: | Inglês
Conteúdo: | Evaluation of transgenic crops under field conditions is a fundamental step for the production of genetically engineered varieties. In order to determine if there is pollen dispersal from transgenic to nontransgenic soybean plants, a field release experiment was conducted in the Cerrado region of Brazil. Nontransgenic plants were cultivated in plots surrounding Roundup Ready transgenic plants carrying the cp4 epsps gene, which confers herbicide tolerance against glyphosate herbicide, and pollen dispersal was evaluated by checking for the dominant gene. The percentage of cross-pollination was calculated as a fraction of herbicide-tolerant and -nontolerant plants. The greatest amount of transgenic pollen dispersion was observed in the first row, located at one meter from the central (transgenic) plot, with a 0.52% average frequendecy. The frequency of pollen dispersion decreased to 0.12% in row 2, reaching 0% when the plants were up to 10 m distance from the central plot. Under these conditions pollen flow was higher for a short distance. This fact suggests that the management necessary to avoid cross-pollination from transgenic to nontransgenic plants in the seed production fields should be similar to the procedures currently utilized to produce commercial seeds.
Palavras-Chave: | Transgênico.
Thesagro: | Cerrado; Genética Vegetal; Glycine Max; Planta Transgênica; Soja.
Categoria do assunto: | --
Registro original: | Embrapa Cerrados (CPAC)
Exemplares: | CPAC - (28027-1) - UPC - AP - -- - CRI7127 -  - CRI7127 - DIS