Effect of growth regulators on plant growth and seed yield of Matthiola incana, Brillant 'Barbara'

The effect of soaking seeds for 24 hours or spraying plants at different growth stages with GA(3) (50-200 mg/l, GA(4+7) (50-200 mg/l), NAA (5-20 mg/l), paclobutrazol (50-200 mg/l), ethephon (250-1000 mg/l) triapenthenol (25-400 mg/l) or uniconazole (100-400 mg/l) on the germination, plant growth and seed yield of Matthiola incana, Brillant 'Barbara' was examined. Gibberellins improved the germination of seeds. The seedlings obtained from the seeds soaked in GA(3), GA(4-7) and NAA were taller and stal ted to flower earlier than plants from the other treatments. Soaking seeds or spraying the plants with growth regulators did not in fluence the plant height at the harvest time, yield or duality of seeds.