Produção Nacional
Control of ornamental sunflower height with daminozide
2011; UNIVERSIDADE ESTADUAL DE LONDRINA; Volume: 31; Issue: 4Sup1 Linguagem: Inglês
10.5433/1679-0359.2010v31n4sup1p1187
ISSN1679-0359
AutoresFrancine Lorena Cuquel, Maria Carolina Sabbagh, Ana Cláudia Barneche de Oliveira,
Tópico(s)Plant tissue culture and regeneration
ResumoNew 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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