Data/hora: 04/06/2024 05:25:06

Biblioteca(s): | Embrapa Soja.
Data corrente: | 18/06/2015
Data da última atualização: | 12/05/2017
Autoria: | HUNGRIA, M.; NAKATANI, A. S.; SOUZA, R. A.; SEI, F. B.; CHUEIRE, L. M. de O.; ARIAS, C. A.
Afiliação: | MARIANGELA HUNGRIA DA CUNHA, CNPSO; ANDRÉ SHIGUEYOSHI NAKATANI, Bolsista Fundação Araucária; ROSINEI APARECIDA DE SOUZA; FERNANDO BONAFÉ SEI; LIGIA MARIA DE OLIVEIRA CHUEIRE, CNPSO; CARLOS ALBERTO ARRABAL ARIAS, CNPSO.
Título: | Impact of the ahas transgene for herbicides resistance on biological nitrogen fixation and yield of soybean.
Ano de publicação: | 2015
Fonte/Imprenta: | Transgenic Research, [S. l.], v. 24, n. 1, p. 155-165, Feb. 2015.
ISSN: | 1573-9368
DOI: | 10.1007/s11248-014-9831-y
Idioma: | Inglês
Conteúdo: | Studies on the effects of transgenes in soybean [Glycine max (L.) Merr.] and the associated use of specific herbicides on biological nitrogen fixation (BNF) are still few, although it is important to ensure minimal impacts on benefits provided by the root-nodule symbiosis. Cultivance CV127 transgenic soybean is a cultivar containing the ahas gene, which confers resistance to herbicides of the imidazolinone group. The aim of this study was to assess the effects of the ahas transgene and of imidazolinone herbicide on BNF parameters and soybean yield. A large-scale set of field experiments was conducted, for three cropping seasons, at nine sites in Brazil, with a total of 20 trials. The experiment was designed as a completely randomized block with four replicates and the following treatments: (T1) near isogenic transgenic soybean (Cultivance CV127) + herbicide of the imidazolinone group (imazapyr); (T2) near isogenic transgenic soybean + conventional herbicides; and (T3) parental conventional soybean (Conquista) + conventional herbicides; in addition, two commercial cultivars were included, Monsoy 8001 (M-SOY 8001) (T4), and Coodetec 217 (CD 217) (T5). At the R2 growth stage, plants were collected and BNF parameters evaluated. In general, there were no effects on BNF parameters due to the transgenic trait or associated with the specific herbicide. Similarly, at the final harvest, no grain-yield effects were detected related to the ahas gene or to the specific herbicide. However, clear effects on BNF and grain yield were attributed to location and cropping season.
Thesagro: | Fixação de nitrogênio; Herbicida; Soja.
Thesaurus Nal: | Herbicides; Nitrogen fixation; Soybeans.
Categoria do assunto: | F Plantas e Produtos de Origem Vegetal
Registro original: | Embrapa Soja (CNPSO)
Exemplares: | CNPSO - (35924-1) - UPC - AP - DD -  -  -  - DIS