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Pelargonium zonale cv. ʺBelmonte Redʺ is a popular as flowering pot plant with attractive flower heads ,leaves and a wide range of floret color. The present investigation was carried out during two successive seasons of 2012 and 2013 at the Experimental Greenhouse and Post-Harvest Lab. of Ornamental Plants and Landscape Gardening Res. Dept., Hort. Res. Inst.; Giza, Egypt, to investigate the effect of spraying solutions of (GA3 and distilled water) on pelargonium rooted cuttings after planting (0time) and cold storage in perforated and imperforated polyethylene bags for 4 and 8 days at 5°C and their interactions to maintain the quality during shipment. Results showed that all treatments significantly stimulated most of the studied characters compared to control in both 0-time and after cold storage. Spraying pelargonium rooted cuttings with GA3 at 200 mg/l significantly increased vegetative, flowering and root growth parameters in both 0-time and after cold storage. Also, the same treatment recorded higher values of both total chlorophylls and total carbohydrates and lower carotenoids contents in the leaves in both 0-time and after cold storage. Regarding rooted cuttings spraying with GA3 at 200 mg/l and stored for 4 days at 5 °C, it was noticed that the pelargonium rooted cuttings stored for 4 days recorded significantly higher values of vegetative, flowering and root growth parameters than those stored for 8 days. In respect to packaging, it was noticed that the pelargonium rooted cuttings in imperforated polyethylene bags were better in all the studied characters than those stored in perforated polyethylene bags. Rooted cuttings sprayed with GA3 at 200 mg/l then stored for 4 days at 5 °C decreased both weight loss, ethylene production, respiration rate and gray mold infection moreover, improved visual rating. The results of interaction showed that spraying rooted cuttings with GA3 at 200 mg/l and storing them for 4 days gave the lowest respiration rate and ethylene production. Moreover, the rooted cuttings sprayed with GA3 at 200 mg/l and stored for 4 days in imperforated polyethylene bags gave the significantly highest records of vegetative, flowering and root growth parameters and reduced the depletion of total carbohydrates and pigments contents in the leaves. Also, the same treatment gave the utmost decreasing in the decay caused by Botrytis cinerea and the least weight loss percentage which in turn increase quality.

Improving Rooted Cuttings Quality of Pelargonium zonale cv. "Belmonte Red" after Planting and Cold Storage