نوع مقاله : مقاله پژوهشی
نویسندگان
1 گروه زراعت و اصلاح نباتات، واحد سبزوار، دانشگاه آزاد اسلامی، سبزوار، ایران
2 دانشگاه پیام نور- گروه علمی کشاورزی تهران 4697-19395 ج. ا. ایران
چکیده
کلیدواژهها
عنوان مقاله [English]
نویسندگان [English]
Nowadays, environmental stress modulators are used as a simple and low-cost method to reduce the effects of stress. In order to investigate seed yield and essential oil responses of cumin to foliar application of stress modifiers in dryland and irrigated conditions, a split plot experiment in a randomized complete block design was conducted with 3 replications on a private farm in the city of Jaghtai (Khorasan Razavi) in 2017-18. The studied factors were the cultivation method at 2 levels (dryland and irrigated conditions) as the main plot and sources of stress modulators with the 4 levels (control, 1.5 M Glycine Betaine, 10-7 M Brassinosteroids, and 10-3 M Sodium nitroprusside as subplot. Slicing of moderator interaction at the planting method levels showed that foliar application with brassinosteroids in irrigated and dryland conditions increased number of umbrellas per plant (150 and 137%), number of seeds per plant (85.5% and 41.7%) and seed yield (57.9% and 44.8%) compared with no foliar application, respectively. In irrigated conditions foliar application with glycine betaine produced the highest number of lateral branches and foliar application with brassinosteroids produced the highest essential oil yield. Foliar application with brassinosteroids decreased essential oil content by 8.81% in irrigated. In general, the results of the experiment showed that in cumin, in order to obtain proper seed and essential oil yield, cultivation should be done as irrigated and the most suitable modifiers to obtain maximum grain and essential oil yield could be classified as brassinosteroids > glycine betaine > Sodium nitroprusside.
کلیدواژهها [English]
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