Effects of Some Plant Growth Regulators on Quality of Potted Sunflower

Authors : Mehmet TÜTÜNCÜ, Fisun Gürsel ÇELİKEL

Pages : 113-118

Doi:10.16882/hortis.1213985

View : 17 | Download : 9

Publication Date : 2022-12-15

Article Type : Research Paper

Abstract :This study was carried out to evaluate the effects of different plant growth regulators on the ornamental sunflower plant. The seedlings belonging to Helianthus annuus L. cv. Sunsantion F1 were planted in plastic pots insert ignore into journalissuearticles values(2 L); containing peat:perlite insert ignore into journalissuearticles values(1:1, v/v); medium at four true leaf stage. Spray treatments of aminoethoxyvinil glycine insert ignore into journalissuearticles values(AVG; 250 and 500 ppm);, promalin insert ignore into journalissuearticles values(5 and 10 ppm);, thidiazuron insert ignore into journalissuearticles values(TDZ; 5-10 µM);, ethephon insert ignore into journalissuearticles values(100 ppm); were applied to seedlings 20 days after transfering to the pots, and treatments were repeated 10 days after the first application. Flower life insert ignore into journalissuearticles values(days);, flower diameter insert ignore into journalissuearticles values(cm);, stem diameter insert ignore into journalissuearticles values(cm); and plant height insert ignore into journalissuearticles values(cm); were determined. According to statistical analysis, AVG at 250 ppm significantly increased the flower life from 9.17 d in control plants to 11.08 d whereas there were no significant effects on flower diameter and plant height. Both concentrations of Promalin and TDZ increased stem diameter significantly. However, TDZ increased the flower life from 9.17 d insert ignore into journalissuearticles values(control plants); to 10.36 at 10 µM and 10.33 at 5 µM TDZ. Ethephon application prevented flower bud opening and caused the leaves to be yellowing. These results may suggest AVG and TDZ pre-treatments increase the quality and shelf-life of the potted sunflower plant.
Keywords : Amineoethoxyvinil glycine, Ethephon, Flower life, Promalin, Thidiazuron