Response of Yield and Yield Components of Rainfed Wheat Cultivars to Salicylic Acid and Selenium

پژوهشهای زراعی ایران

Article 13, Volume 10, Issue 3 - Serial Number 27, October 2012, Pages 614-623   

Document Type: Research Article

DOI: 10.22067/gsc.v10i3.17825

Authors

N. A Sajedi^* ; E Gholinezhad

Abstract

In order to study the effects of salicylic acid and selenium application on yield and yield components of rainfed wheat cultivars, a field experimental was carried out as factorial based on randomized complete block design with four replications in the Research Station of Islamic Azad University- Arak Branch, Iran in 2010-2011 growing season. The treatments were salicylic acid and selenium. Salicylic acid in three levels, without salicylic acid, seed priming with solution of 0.5 mM salicylic acid and seed priming with solution of 0.5 mM salicylic acid along with sprayed at the rates of 1 mM two weeks before flowering. Selenium in two levels, without and with using 18 g ha-1. The cultivars of dry land wheat were including of Azar 2, Sardary and Rasad. Results showed that Azar 2 produced 19 and 16% higher grain yield than Sardary and Rasad, respectively. Application of salicylic acid as seed priming increased peduncle length, grain/spike, and grain yield significantly. Foliar application of selenium increased number of fertile spike and grain yield by 7.3 and 7.5% compared with control. Application of salicylic acid with selenium spray increased grain yield by 9% compared to control. The highest and lowest response of yield and yield components observed in seed priming with salicylic acid along with spray of selenium in Azar 2 respectively. In general, the results showed that salicylic acid along with selenium can alleviate the adverse effects of drought stress and result was acceptable in seed yield of three wheat varieties of Azar 2, Sardary and Rasad.

Keywords

Seed priming; Foliar application; Stress moderator factors; Seed yield