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- Title
Induction of Heat Tolerance in Maize through Exogenous Application of Salicylic Acid, Ascorbic Acid and Hydrogen Peroxide in a Field Study.
- Authors
Iqbal, Muhammad Mazhar; Ahmad, Ijaz; Basra, Shahzad Maqsood Ahmed; Ijaz, Abu Baker; Tarar, Zahid Hassan; Ansar, Muhammad; Iqbal, Umer; Naz, Tayyaba; Fatima, Bilquees; Akram, Muhammad; Wasaya, Allah; Iqbal, Asif; Anwar, Shakeel Ahmed; Khan, Khalid Saif Ullah; Khalid, Azeem; Aziz, Asif; Mehmood, Rashid
- Abstract
Temperature is a very important factor that affects crop yield. Maize, a monoecious plant, is adversely affected by high temperature during anthesis. Asynchronous fertilization and pollen desiccation reduce maize yield by reducing grain number and their size. Spray of hydrogen peroxide (H2O2), salicylic acid (SA) and ascorbic acid (AsA) may induce heat stress tolerance. Spray of SA, AsA, and H2O2 increased chlorophyll, relative water and nutrient contents, membrane stability index (MSI) and antioxidants activities in heat stress. Moreover, foliar application of chemicals during normal and late planting improved the grain yield by increasing both the grain number and size. Foliar spray of SA, AsA and H2O2 may induce heat tolerance by improving antioxidant activities which stabilized membrane and maintaining relative water, chlorophyll and nutrient content in ear leaves of maize during heat stress.
- Subjects
SALICYLIC acid; VITAMIN C; HYDROGEN peroxide; CORN; HEAT; WHEAT yields
- Publication
Pakistan Journal of Agricultural Research, 2020, Vol 33, Issue 3, p585
- ISSN
0251-0480
- Publication type
Article
- DOI
10.17582/journal.pjar/2020/33.3.585.593