Control of ornamental sunflower height with daminozide

Autores

  • Francine Lorena Cuquel Universidade Federal do Paraná
  • Maria Carolina Sabbagh Universidade Federal do Paraná
  • Ana Cláudia Barneche de Oliveira Embrapa Clima Temperado

DOI:

https://doi.org/10.5433/1679-0359.2010v31n4Sup1p1187

Palavras-chave:

Helianthus annuus, B-nine, Plant growth regulator, Growth retardant, Floriculture

Resumo

New sunflower (Helianthus annuus L.) cultivars with ornamental features were developed in South of Brazil by Empresa Brasileira de Pesquisa Agropecuária (EMBRAPA-CNPSoja). Despite its beauty, the hybrid ‘BRS-Oasis’ reaches over two meters height, with dimensions inadequate to an ornamental plant. The goal of this research was to decrease its height, without reducing stem and head diameter, to growth it as cut flower inside greenhouse or as potted plant. Daminozide, a growth retardant, was applied twice or three times, at concentrations of 4,000 mg.L-1; 6,000 mg.L-1; or 8,000 mgL-1. An additional treatment by applying just water was used as a control. Height control, without decreasing stem and head diameters was obtained by applying Daminozide twice at 6,000 mg.L-1 or Daminozide three times at 4,000 mg.L-1. Final plant height was adequate to growth ‘BRS-Oasis’ as a cut flower inside greenhouse, but not small enough to growth it as a potted plant.

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Biografia do Autor

Francine Lorena Cuquel, Universidade Federal do Paraná

Professor, Universidade Federal do Paraná, Rua dos Funcionários, 1540, Telefone: 041 3350-5751, Curitiba, PR, Brazil

Maria Carolina Sabbagh, Universidade Federal do Paraná

MSc., Universidade Federal do Paraná, Rua dos Funcionários, 1540, Curitiba, PR, Brazil

Ana Cláudia Barneche de Oliveira, Embrapa Clima Temperado

Ph.D., Embrapa de Clima Temperado.

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Publicado

2011-02-09

Como Citar

Cuquel, F. L., Sabbagh, M. C., & Oliveira, A. C. B. de. (2011). Control of ornamental sunflower height with daminozide. Semina: Ciências Agrárias, 31(4Sup1), 1187–1192. https://doi.org/10.5433/1679-0359.2010v31n4Sup1p1187

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