EFFECT OF SPRAYING WITH ROSELLE EXTRACT AND MIXED OF CPPU+GA ON FLOWING OF TWO Gerbera jamesonii L. CULTIVARS.

Abstract

This experiment was carried out in the lath house of the Department of Horticulture and Landscape Gardening, Faculty of Agriculture, Tikrit University during the spring agricultural season 2019-2020, to study the effect of Roselle extract with a mixture of GA + CPPU on two cultivars of Gerbera jamesonii L. pink and yellow coulors, The research was carried out as a factorial experiment in split plots according to a Randomized Complete Blocks Design (RCBD) with three replicates. The results showed that the yellow cultivar gave highest number of inflorescences 2.74 inflorescence Plant-1. While the pink cultivar exceeded the diameter of the inflorescence (66.26 mm), the diameter of the stalk (3.93 mm) and the length of the stalk (22.40 cm). Where the treatment of spraying with a mixture CPPU+GA exceeded the treatment of Roselle extract and control in all characteristics, the number of inflorescences 2.87 inflorescence. plant-1, inflorescence diameter 65.84 mm, stalk diameter 3.95 mm, stalk length 22.39 cm and vase life 8.99 days. The highest number of inflorescences was recorded for interaction treatment between the yellow variety treatment and spraying with the GA + CPPU mixture and gave 3.22 inflorescences. Plant-1