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تأثیر تیمارهای روی و پتاسیم بر فعالیتهای آنتیاکسیدانی و پاسخهای فیزیولوژیک کلزا در خاک شور | ||
تحقیقات آب و خاک ایران | ||
مقاله 10، دوره 50، شماره 6، آبان 1398، صفحه 1409-1420 اصل مقاله (333.19 K) | ||
نوع مقاله: مقاله پژوهشی | ||
شناسه دیجیتال (DOI): 10.22059/ijswr.2019.261768.667964 | ||
نویسندگان | ||
نادر خادم مقدم1؛ بابک متشرع زاده* 2؛ رضا معالی امیری3 | ||
1گروه علوم و مهندسی خاک دانشگاه تهران، دانشگاه زنجان | ||
2گروه علوم و مهندسی خاک، پردیس کشاورزی و منابع طبیعی دانشگاه تهران | ||
3گروه زراعت و اصلاح نباتات دانشگاه تهران | ||
چکیده | ||
تنش شوری یکی از عوامل تأثیرگذار بر محصولات کشاورزی در مناطق خشک جهان است. در این شرایط تأثیر تیمارهای کودی پتاسیم و روی بر تولید گونههای فعال اکسیژن طی پژوهشی بهصورت فاکتوریل در قالب طرح کاملاً تصادفی با سه عامل (رقم، کود و زمان) و سه تکرار در گلخانه بررسی شد. نتایج نشان دادند که کاربرد تیمار پتاسیم در رقم ساریگل و لیکورد موجب افزایش بهترتیب %1/49 و %4/14 فعالیت آنزیم سوپراکسید دیسموتاز (SOD) نسبت به سایر تیمارهای کودی شد. از طرفی کاربرد این تیمار کودی فعالیت آنزیم گایاکول پراکسیداز (GPX) را در رقم ساریگل و لیکورد بهترتیب %7/50 و %2/62 نسبت به سایر تیمارهای کودی افزایش داد. بیشترین فعالیت آنزیم SOD و GPX در مرحله قبل از گلدهی بود که نسبت به مرحله گلدهی به ترتیب %6/18 و %6/32 و نسبت به مرحله بعد از گلدهی بهترتیب %9/44 و %1/26 فعالیت بیشتری را نشان دادند. همچنین با مصرف کودهای پتاسیمی، محتوای نسبی آب در ارقام ساریگل و لیکورد بهترتیب حداقل به میزان %9/7 و %35/0 افزایش یافت. رقم ساریگل نسبت به لیکورد در ریشه و بخش هوایی بهترتیب به میزان %79/1 و %9/18 جذب پتاسیم کمتری داشت. بین دو رقم، ساریگل بهعنوان رقمی متحمل به شوری است و از جمله مراحل حساس رشد آن، مرحله قبل از گلدهی است که میتوان با مصرف کودهای پتاسیمی در این مرحله، به میزان زیادی از اثر تنش کاست. | ||
کلیدواژهها | ||
تنش شوری؛ ساریگل؛ سوپراکسید دیسموتاز؛ گایاکول پراکسیداز؛ لیکورد | ||
عنوان مقاله [English] | ||
The Effect of Zinc and Potassium Treatments on the Antioxidant Activities and Physiological Responses of Canola in a Saline Soil | ||
نویسندگان [English] | ||
Nader Khadem Moghadam1؛ Babak Motesharezadeh2؛ Reza Maali amiri3 | ||
1Soil Science, University of Tehran | ||
2Soil Science Department, University of Tehran | ||
3Department of Agronomy, University of Tehran | ||
چکیده [English] | ||
Salinity stress is one of the factors that affect the agricultural productions in the arid regions in the world. In this condition, the effect of potassium and zinc fertilizer treatments on the production of reactive oxygen species were investigated in a completely randomized design with three factors (fertilizer, cultivar, and time) and three replications in a greenhouse. The results showed that the application of potassium treatment in Sarigol and Licord cultivars increased SOD activity 49.1% and 14.4% respectively, as compared to the other fertilizer treatments. On the other hand, the application of this fertilizer increased the activity of GPX enzyme in Sarigol and Licord cultivars 50.7% and 62.2% compared to the other fertilizer treatments, respectively. The highest activities of SOD and GPX were in pre-flowering stage which showed 18.6 and 32.6% increasing related to flowering stage and 44.9 and 26.1% increasing related to post-flowering stage, respectively. Also, the relative water content of Sarigol and Licord cultivars increased by at least 7.9 and 0.35%, respectively, using potassium fertilizers. Sarigol cultivar had less potassium uptake than Licord cultivar in the root and shoot by 1.79% and 18.9%, respectively. Sarigol is a salt tolerant cultivar and sensitive in pre-flowering stage in which the consumption of potassium fertilizer can reduce the effect of salinity stress. | ||
کلیدواژهها [English] | ||
guaiacol peroxide, Licord, Salinity stress, Sarigol, superoxide dismutase | ||
مراجع | ||
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