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Cited by 13Plant Stress Responses and ToleranceSeed Germination and PhysiologyPlant Growth Enhancement Techniques

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

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KHAN, Imran, ZAFAR, Hina, CHATTHA, Muhammad U., MAHMOOD, Athar, MAQBOOL, Rizwan, ATHAR, Fareeha, ALAHDAL, Maryam A., BIBI, Farhana +3 more·2022·Notulae Botanicae Horti Agrobotanici Cluj-Napoca
DOI 10.15835/nbha50112615
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Abstract

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.

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  • The harmful effects on maize development, including a reduction in height and fresh and dry mass of shoots and roots, are already noticeable at an intermediate level of soil alkalinity.

    “The harmful effects on maize development, including a reduction in height, and fresh and dry mass of shoots and roots are already noticeable at an intermediate level of soil alkalinity [65].”

    From Soy Molasses as Culture Medium for Bacillus Species Aiming at Plant Growth Promotion (2024) · cites this paper as [65]

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Authors
KHAN, I., ZAFAR, H., CHATTHA, M. U., MAHMOOD, A., MAQBOOL, R., ATHAR, F., ALAHDAL, M. A., BIBI, F., MAHMOOD, F., HASSAN, M. U., & QARI, S. H.
Affiliations
  • University of Agriculture Faisalabad (PK)
  • Umm al-Qura University (SA)
  • Government College University, Lahore (PK)
  • Jiangxi Agricultural University (CN)
ORCID
Venue
Notulae Botanicae Horti Agrobotanici Cluj-Napoca
Publisher
University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca
Published
2022-03-02
Volume
50
Issue
1
Pages
12615
ISSN
  • 0255-965X (ISSN-L)
  • 1842-4309
DOI
10.15835/nbha50112615
OpenAlex
W4220899610
Cited by
13
References
65
Citations by year
2026: 1 · 2025: 2 · 2024: 2 · 2023: 3 · 2022: 5
FWCI
1.65
Type
journal article
Language
en
Open access
Licence
Locations
  • Notulae Botanicae Horti Agrobotanici Cluj-Napoca (publishedVersion, cc-by)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion)
  • Greater South Information System
Topics
  • Life Sciences › Agricultural and Biological Sciences › Plant Science › Plant Stress Responses and Tolerance
  • Life Sciences › Agricultural and Biological Sciences › Plant Science › Seed Germination and Physiology
  • Life Sciences › Agricultural and Biological Sciences › Plant Science › Plant Growth Enhancement Techniques
Keywords
seed priming, soil alkalinity, alkaline stress, maize, osmopriming, potassium nitrate, hydropriming, hydrogen peroxide, oxidative stress, antioxidant enzymes, photosynthetic pigments, sodium accumulation, Na+/K+ ratio, electrolyte leakage, biomass production

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