Effect of 24-Epibrasinosteroid and Jasmonic acid on growth indices and flowering of Cyclamen (Cyclamen Persicum)

In order to investigate the effect of 24- epibracinosteroids and jasmonic acid on cyclamen persicum growth indices and flowering, a completely randomized statistical design with 7 treatments, 3 replications and each repetition containing 3 pots, a total of 63 pots of cyclamen in winter 1400 was done in a commercial greenhouse in Karaj city. Treatments included 24-epibrasinosteroids and jasmonic acid each with 3 levels of 2.5, 5 and 10 μM and control treatment. Sampling and evaluation of traits were performed about four weeks after the last foliar application. The results showed that the highest leaves number and total leaf chlorophyll content were obtained in 5 μl of jasmonic acid treatment. The highest fresh and dry weight of flowers, cell membrane stability index, flowers number and petal anthocyanin content were 10 μl in 24- epibrasinosteroid treatment. Also, the maximum and minimum shelf life of cyclamen flowers per plant with 39.26 and 20.34 days were obtained in 24- epiprasinosteroid treatment of 10 μg and control treatment. Therefore, according to the research results, spraying of 24-epibrasinosteroid and jasmonic acid is recommended to improve the growth indices and flowering of cyclamen persicum.