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Seed priming with different agents mitigate alkalinity induced oxidative damage and improves maize growth

التفاصيل البيبلوغرافية
العنوان: Seed priming with different agents mitigate alkalinity induced oxidative damage and improves maize growth
المؤلفون: Imran KHAN, Hina ZAFAR, Muhammad U. CHATTHA, Athar MAHMOOD, Rizwan MAQBOOL, Fareeha ATHAR, Maryam A. ALAHDAL, Farhana BIBI, Faisal MAHMOOD, Muhammad U. HASSAN, Sameer H. QARI
المصدر: Notulae Botanicae Horti Agrobotanici Cluj-Napoca, Vol 50, Iss 1 (2022)
بيانات النشر: AcademicPres, 2022.
سنة النشر: 2022
المجموعة: LCC:Forestry
LCC:Agriculture (General)
مصطلحات موضوعية: alkalinity stress, antioxidant activities, growth, ionic homeostasis, photosynthetic pigments, Forestry, SD1-669.5, Agriculture (General), S1-972
الوصف: Soil alkalinity is a severe threat to crop production globally as it markedly retards plant growth. Different techniques are used to mitigate alkaline stress, but priming techniques are considered the most appropriate. The current study was carried out in complete randomized design (CRD) to evaluate the effect of different priming techniques on maize crop grown under different levels of alkalinity stress. The experiment was comprised of different treatments of alkalinity stress (AS) including, control, 6 dS m-1 and 12 dS m-1 and different priming techniques including control, hydro-priming (HP), osmo-priming (OP) with potassium nitrate: KNO3) and redox-priming (RP) with hydrogen peroxide (H2O2). Results indicated that alkalinity stress significantly reduced plant growth and biomass production and induced severe alterations in physiological attributes and antioxidant activities. Soil alkalinity significantly reduced the root and shoot growth and subsequent biomass production by increasing electrolyte leakage (70.60%), hydrogen peroxide (H2O2: 31.65%), malondialdehyde (MDA: 46.23%) and sodium (Na+) accumulation (22.76%) and reduction in photosynthetic pigments, relative water contents (RWC), total soluble proteins (TSP) and free amino acids, potassium (K+) accumulation. However, priming treatments significantly alleviated the alkalinity-induced toxic effects and improved plant growth. OP (KNO3) remained the top performing. It appreciably improved plant growth owing to the improved synthesis of photosynthetic pigments, better RWC (16.42%), TSP (138.28%), FAA (178.37%), and K+ accumulation (31.385) and improved antioxidant activities (APX and CAT) by favoring the Na+ exclusion and maintenance of optimum Na+/K+. In conclusion, KNO3 priming is an imperative seed priming practice to improve maize growth and biomass production under alkalinity stress.
نوع الوثيقة: article
وصف الملف: electronic resource
اللغة: English
تدمد: 0255-965X
1842-4309
Relation: https://www.notulaebotanicae.ro/index.php/nbha/article/view/12615; https://doaj.org/toc/0255-965X; https://doaj.org/toc/1842-4309
DOI: 10.15835/nbha50112615
URL الوصول: https://doaj.org/article/9d6dfb0bf82f4b3798ad3a5639de0b10
رقم الأكسشن: edsdoj.9d6dfb0bf82f4b3798ad3a5639de0b10
قاعدة البيانات: Directory of Open Access Journals
الوصف
تدمد:0255965X
18424309
DOI:10.15835/nbha50112615