Effect of foliar application of salicylic acid and iron on some biochemical and agronomic characteristics of SC704 maize hybrid (Zae mays L.) under water deficit

Subject Areas : Antioxidant enzymes

Yunus Soltani Kazemi ¹ , Mohamad Reza Dadnia ^{2 *} , Seyed Keivan Marashi ³ , Alireza Shokuhfar ⁴

1 - Department of Agronomy, Ahvaz.C., Islamic Azad University, Ahvaz, Iran
2 - Department of Agronomy, Ahvaz.C., Islamic Azad University, Ahvaz, Iran
3 - Department of Agronomy, Ahvaz.C., Islamic Azad University, Ahvaz, Iran
4 - Department of Agronomy, Ahvaz.C., Islamic Azad University, Ahvaz, Iran

Received: 2024-11-12 Accepted : 2025-01-17 Published : 2025-04-03

Keywords: Corn, Irrigation, Malondialdehyde, Salicylic acid, Seed yield. ,

Abstract :

In order to investigate the effect of foliar spraying of salicylic acid and iron on the biochemical characteristics of corn under water deficit stress, a split split plot experiment was conducted in a randomized complete block design with four replications, plants were planted in during two years (2017-19) in Gotvand. The main plot of irrigation with two levels without stress and interruption of irrigation 10 days after the appearance of the ears until the time of ripening (80 days after planting), the sub-plot of salicylic acid spraying with four levels of zero, 100, 200 and 300 micromol and the sub-plot of solution Iron was sprayed with three levels of zero, two and four kilograms per hectare (75 days after planting). The results showed that the triple interaction of irrigation interruption, salicylic acid foliar spraying and iron on grain yield and biological performance was significant. Also, the interaction of irrigation interruption and salicylic acid on superoxide dismutase, malondialdehyde, dityrosine and dihydroxyguanosine was significant. In the condition of interruption of irrigation biochemical biomarkers such as malondialdehyde, dityrosine and dihydroxyguanosine increased, but their levels decreased with the application of salicylic acid and iron sprays under stress conditions. The highest seed yield (8731.2 kg/ha) was obtained under normal irrigation conditions with foliar spraying of 300 micromoles of salicylic acid and 4 kg/ha of iron, which is compared to the treatment of stopping irrigation 10 days after the appearance of the cob until the time of ripening and without foliar spraying of salicylic acid and iron it showed an increase of 31.2%. In general, the results of the experiment showed that salicylic acid (300 micromol) and iron (4 kg/ha) foliar application in suitable moisture conditions can increase grain yield and improve corn production in general.