Effect of ABA derivative and GA_3 Mixing Treatment on Growth and Flowering of Primula polyantha 'Scarlet' and Senecio cruentus 'Early Perfection Red'

摘要

This study was conducted to determine the effect of ABA derivative and GA_3 mixing treatment on growth and flowering of Primula polyantha 'Scarlet'and Senecio cruentus 'Early Perfection Red'. The number of days to flower bud emergence and flowering ofP. polyantha 'Scarlet' were accelerated 9 and 11.3 days, respectively, by two times application of 0.5 mg.L~(-1) ABA derivative + 10.0 mg.L~(-1) GA_3 compared to control. Application of chemicals in all treatment increased number of flowers per plant about three times. The number of days to flower bud emergence and flowering of S. cruentus 'Early Perfection Red' were accelerated 4.9 and 8.3 days, respectively, by one time application of 0.5 mg.L~(-1) ABA derivative + 10.0 mg.L~(-1) GA_3. This treatmentalso increased inflorescences about 12. As the result, ABA derivative and GA_3 mixing treatment was demonstrated to accelerate the flowering and increase flower number of winter annuals in this experiment.