اثر محلول‌پاشی سالیسیلیک اسید و عناصر ریزمغذی بر برخی ویژگی‌های بیوشیمیایی و زراعی کلزا رقم نپتون در شرایط تنش کم آبی

نوع مقاله : علمی پژوهشی

نویسندگان

1 دانشجوی دکتری دانشکده کشاورزی دانشگاه لرستان.خرم آباد. ایران

2 استادیار دانشکده کشاورزی دانشگاه لرستان. خرم آباد. ایران

3 دانشیار دانشکده کشاورزی دانشگاه لرستان. خرم آباد. ایران

چکیده

اثر محلول‌پاشی سالیسیلیک اسید و عناصر ریزمغذی بر برخی ویژگی‌های بیوشیمیایی و زراعی رقم نپتون کلزا در شرایط تنش کم‌آبی طی آزمایشی به‌صورت اسپلیت فاکتوریل در قالب طرح بلوک‌های کامل تصادفی با سه تکرار در سال زراعی 96-95 در دانشکده کشاورزی دانشگاه لرستان بررسی گردید. تنش کم‌آبی به‌عنوان عامل اصلی در دو سطح ](آبیاری مجدد در 20 (شاهد) و 70 درصد تخلیه ظرفیت زراعی)[ و ترکیب تیماری دو عامل محلول‌پاشی عناصر ریزمغذی (عدم مصرف و محلول‌پاشی با غلظت 2 در هزار) و عامل سالیسیلیک اسید (غلظت‌های صفر، 5/0، 1 و 5/1 میلی‌مولار) در کرت­های فرعی در نظر گرفته شدند. نتایج نشان داد که اثر تنش کم‌آبی و سالیسیلیک اسید بر کلیه صفات مورد مطالعه معنی‌دار بود. اثر کود ریزمغذی، به­جز بر میزان ترکیبات آنتی‌اکسیدانت، بر سایر صفات مورد مطالعه نیز معنی‌دار به­دست آمد. نتایج همچنین نشان داد که اثر متقابل سه‌گانه بر صفات کاتالاز، پراکسیداز، پرولین، درصد روغن، عملکرد دانه و عملکرد روغن معنی‌دار است. بیشترین میانگین درصد روغن، عملکرد دانه و عملکرد روغن به‌ترتیب با مقدار 02/46 درصد، 4424 و 2036 کیلوگرم در هکتار از ترکیب تیماری (عدم تنش+ محلول‌پاشی 5/1 میلی­مولار سالیسیلیک اسید و غلظت 2 در هزار کود ریزمغذی) می­باشند. نتایج این تحقیق بر اساس روند تغییرات میانگین‌ها، نشان داد که کاربرد سالیسیلیک اسید و عناصر ریزمغذی اثر تنش کم‌آبی در گیاه کلزا را تا حدی کاهش می‌دهد. به‌طور‌کلی، باتوجه به نتایج به‌دست آمده از این تحقیق، برای کاهش اثرات منفی تنش کمبود آب و حصول عملکرد دانه مناسب، استفاده از کود ریزمغذی فرتی میکس ‌سه‌گانه و غلظت 5/1 میلی‌مولار سالیسیلیک اسید در شرایط تنش کم آبی توصیه می‌گردد.

کلیدواژه‌ها


عنوان مقاله [English]

Effect of Foliar Application of Salicylic Acid and Micronutrients on Some Biochemical and Agronomic Characteristics of Rapeseed (Brassica napus L.’ Neptune Cultivar) under Water Deficit Stress

نویسندگان [English]

  • Younes Mir 1
  • Mashalah Daneshvar 2
  • Ahmad Ismaili 3
  • Hamed Khosravi 1
1 Ph.D. Student, Faculty of Agriculture, Lorestan University, Khorramabad, Iran
2 Assistant Professor, Faculty of Agriculture Lorestan University, Khorramabad, Iran
3 Associate Professor, Faculty of Agriculture, Lorestan University, Khorramabad, Iran
چکیده [English]

To investigate the effect of soluble salicylic acid and micronutrient elements on some of the biochemical and agronomic characteristics of rapeseed under water deficit conditions studied in a split factorial experiment based on a randomized complete block design with three replications at the Faculty of Agriculture, Lorestan University during 2016-2017 growing season. Water deficit was considered as the main factor with two levels (irrigation at 20 (control) and 70% of field capacity depletion), and combined treatments of two factors of foliar application of micronutrient elements (non-consumption and spraying at a concentration of 2 per thousand) and salicylic acid concentration of 0, 0.5, 1 and 1.5 mM) as the subplot. The results showed that the effects of water deficit and salicylic acid on all traits under study were significant. The results showed that triple interaction was also significant on catalase, peroxidase. proline, oil percent, seed yield and oil yield. The highest average oil percentage, seed and oil yield were 46.02%, 4424 and 2036 kg.ha-1 of the treatment combination (no stress+ solubility of 1.5 mm salicylic acid and concentration of 2 per thousand micronutrient fertilizer). The results of this study, based on the changes in the mean, showed that salicylic acid and micronutrient elements reduced the effect of water deficit in canola seedlings. In general, Based on the results of this study, it is recommended to reduce the negative effects of water deficit stress and produce proper seed yield, by using Ferti Mix Trio fertilizer and 1.5mM salicylic acid under water deficit conditions.

کلیدواژه‌ها [English]

  • Catalase
  • oil percentage
  • peroxidase
  • Proline
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