نوع مقاله : مقاله پژوهشی
نویسندگان
1 دانشجوی دکتری، دانشکده کشاورزی، دانشگاه زنجان، زنجان، ایران
2 استادیار، دانشکده کشاورزی، دانشگاه زنجان، زنجان، ایران
3 استاد، دانشکده علوم کشاورزی، دانشگاه گیلان، رشت، ایران
چکیده
کلیدواژهها
عنوان مقاله [English]
نویسندگان [English]
Polyamines are low molecular weight organic polycations containing two or more amino groups and their application in agriculture is going to increase as a result of their positive impact on plant physiological responses. This greenhouse study was applied in a factorial experiment based on completely randomized design to evaluate the effects of polyamines (putrescine and spermine) at four levels (0, 0.5, 1 and 2 mM) on morphophysiological characteristics of Dutch iris (Iris hollandica 'Blue Magic'). Foliar spraying treatments were performed from 3-leaf stage, weekly. The results showed that putrescine and spermine increased vase life and flower diameter and the highest record was observed in 2 mM putrescine treatment. Plants that treated with 2 mM putrescine and spermine had the greatest amount of petals anthocyanin and leaf chlorophyll content. All polyamines treatments increased post-harvest flower fresh weight and petals soluble solids content and the maximum rise was detected by 2 mM putrescine application. According to the results of this study, the best results were found in both 2 mM putrescine and 1 mM spermine treatments, where the lowest electrolyte leakage and malondialdehyde content and the most antioxidant enzymes catalase and ascorbate peroxidase activities was obtained.
کلیدواژهها [English]