Gibberellin Inhibitor Treatments Before Planting Control Plant Height of Narcissus tazetta by Affecting Growth Parameters

The effects of flurprimidol and paclobutrazol, treatments as preplant bulb soaks on plant height, growth parameters other properties Narcissus tazetta L. grown in pots were investigated. Bulbs soaked at 0, 10, 20 mg L-1 or paclobutrazol 100, 200 before planting. gibberellin inhibitors the flower number, flowering time, life, leaf length quantitative measurements (specific area, area ratio, thickness, weight ratio stem ratio) determined. When narcissus reached to sale stage, plants taken laboratory where temperature stable 20°C evaluate postproduction quality. shortest height (6.25 cm, 63% shorter than control) was obtained from application. Plants applied with 59% control 7.00 cm height. Gibberellin also shortened increased whereas decreased specific by shortening continued after harvest (production) marketing consumer (laboratory) conditions. heights treated 10.87 (20 flurpirmidol) 10.37 (200 paclobutrazol) while 26.75