Evaluation of changes in physiological parameters related to the lifespan of cut gerbera flowers under ascorbic acid and iron nano particle

Gerbera (Gerbera jamesonii Bolus ex Hooker f.) is a perennial plant belonging to the Astraceae that is widely cultivated in most parts of the world. The area under gerbera cultivation in the world is ۱۱۰۰ to ۱۲۰۰ hectares and in Iran is ۶ hectares. Gerbera flower is one of the ten most important cut flowers in Iran and the world. In this study, the effect of ascorbic acid concentration (۰, ۰.۵ and ۱)g/l on d and ascorbice iron nanoparticle at the concentration of ۱% elaying the aging of white and Red gerbera cut flowers was investigated. The results showed that the application of ۱g/l ascorbic acid caused the greatest delay in the aging of cut flowers compared to the control (distilled water). Which is treated as a solution in sterilized bottles . The fresh weight and diameter of flowers treated with ۱g/l ascorbic acid and ascorbic acid iron nanoparticles were higher than other treatments. The results of antioxidant enzymes (catalase and superoxide dismutase) and malondialdehyde in cut flowers of Gerbera during ۹ days and ۱۳ days for ascorbic acid nanoparticle showed that the activity of catalase increased in cut flowers treated with ascorbic acid and ascorbic acid nanoparticle. The activity of superoxide dismutase gradually decreased with aging of cut flowers stored in distilled water, while the use of ۱g/l ascorbic acid and ascorbic acid nanoparticle prevented its reduction. The use of ۱g/l ascorbic acid also delayed the aging of cut flowers by preventing the increase of malondialdehyde. Therefore, storage of cut flowers of white and Red gerbera in ۱g/l ascorbic acid and ascorbic acid nanoparticle solution delayed the aging of flowers.

کلیدواژه ها:

Ascorbic acid ، Gerbera ، Superoxide dismutase ، Catalase ، Malondialdehyde . nanoparticle iron ascorbic acid