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Journal of Agricultural Science and Technology، جلد ۲۷، شماره ۳، صفحات ۷۱۷-۷۳۱
عنوان فارسی
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عنوان انگلیسی Potassium Foliar Application Enhances High Temperature Tolerance and Productivity of Canola under Late Sown Conditions
چکیده انگلیسی مقاله Potassium (K) mitigates the effect of high temperature on canola, especially during its later growth stages when sowing of canola is delayed. To explore the effect of K on high temperature tolerance and canola production, a field experiment (2019–2021) was conducted. The experiment had two sowing dates (October 15 and November 1) and four K treatments, i.e. control, soil application (50 kg K ha-1), soil application+0.25% K foliar spray at pre- and post-flowering stages, and soil application+0.50% K foliar spray at pre and post-flowering stages. Application of 50 kg K ha-1 as soil application along with 0.50% K-foliar sprays resulted in higher production of biochemicals (superoxide dismutase, peroxidase, catalase, and total soluble sugars) besides net photosynthetic rate and stomatal conductance along with less malondialdehyde production and relative cell injury in crops sown on November 1st than untreated plants. Moreover, it also enhanced chlorophyll florescence and chlorophyll (a and b) contents of late-sown crop. Plants sown on November 1st and received 50 kg K ha-1 as soil application along with 0.50% K foliar spray also gave a higher yield and economic returns than the control. Therefore, it is suggested to supply 50 kg K ha-1 at sowing and a foliar spray of 0.50% K at the pre- and post-flowering stages to canola sown late in the season to achieve optimal and economical yield levels.
کلیدواژه‌های انگلیسی مقاله Antioxidant activities,Foliar spray,lipid peroxidation,Reactive Oxygen Species
نویسندگان مقاله Saba Iqbal |
Agronomic Research Institute, Faisalabad, Ayub Agricultural Research Institute (AARI), Faisalabad, Pakistan.

Asmat Ullah |
Agronomic Research Institute, Faisalabad, Ayub Agricultural Research Institute (AARI), Faisalabad, Pakistan.

Arbab Jahangeer |
Agronomic Research Institute, Faisalabad, Ayub Agricultural Research Institute (AARI), Faisalabad, Pakistan.

Naveed Akhtar |
Agronomic Research Institute, Faisalabad, Ayub Agricultural Research Institute (AARI), Faisalabad, Pakistan.

نشانی اینترنتی https://jast.modares.ac.ir/article_17045_2beae4aac134b89ded475f85f7e9213c.pdf
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