نوع مقاله : مقاله پژوهشی
نویسندگان
1 گروه مهندسی تولید و ژنتیک گیاهی ،دانشکده کشاورزی دانشگاه شهید چمران اهواز
2 دانشجوی دکتری، گروه مهندسی تولید و ژنتیک گیاهی، دانشگاه شهید چمران اهواز
3 دانشیار، گروه مهندسی تولید و ژنتیک گیاهی، دانشگاه شهید چمران اهواز
چکیده
کلیدواژه‌ها
موضوعات
عنوان مقاله [English]
نویسندگان [English]
Background and Objective: The goals of study were to recognize the effects of spraying of hormones, on morphological traits, seed and oil yield of sunflower.
Materials and Methods: The experiment was conducted as split plot based on randomized complete blocks design in the Shahid Chamran University of Ahvaz, in the 2021-2022. The main factor includes the irrigation cycle at three levels (8, 12, and 16 days) and the sub factor includes 5 hormone levels (without hormone, cytokinin hormone: 25 and 50 µmol/liter and salicylic acid: 200 and 400 mmol/liter).
Results: Increasing the irrigation cycle from 8 days to 12 and 16 days caused a decrease in plant height, plant diameter, number of seeds per plant, thousand-grain weight, seed yield, biomass yield, oil yield and oil percentage and increased seed porosity. In the 16-day irrigation cycle, seed yield increased by 69, 72, 37, and 64% under spraying of cytokinin, 25 and 50 µm/l and salicylic acid at 200 and 400 mm/L. Cytokinin 50 µm/l in irrigation conditions of 8, 12 and 16 days increased seed yield by 33, 16.5 and 72 (%) and increased oil yield by 33.5, 19.5 and 50 and 24 (%) respectively compared to not using hormones.
Conclusion: Cytokinin and salicylic hormone can be reported as a strategy to improve the allocation of photosynthetic materials, seed yield and seed oil yield in sunflower, under favorable irrigation conditions and also under drought stress conditions, although both hormones were useful, but cytokinin with a dose 50 µmol/liter was more effective.
کلیدواژه‌ها [English]
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