Effect of Foliar Applications of Various Levels of Salicylic Acid on Yield and Yield Components of Two Barley Cultivars under Dry Land Farming Conditions

Subject Areas :

Negar Farhadi ¹ (MSc student, Department of Agronomy and Plant Breeding, College of Agriculture, Islamic Azad University, Khorram Abad Branch, Iran.)
Manuchehr Sayahfar ² (Scientific member of department of agronomy and plant breeding, college of agriculture, Islamic Azad University, Khorram Abad Branch, Khorram Abad, Iran)
Ghodratollah Shakarami ³ (PhD student, Department of Agronomy and Plant Breeding, College of Agriculture, Islamic Azad University, Tabriz Branch, Tabriz, Iran.)

Received: 2016-08-02 Accepted : 2016-10-03 Published : 2017-02-19

Keywords: Drought stress, yield, Salicylic acid, barley,

Abstract :

In order to study the effect of barley variety and various amounts of salicylic acid concentrations on yield and yield components of barley under dry land farming conditions, an experiment was conducted as factorial based on completely randomized block design with three replication during 2014-2015 cropping year in research field of agricultural investigation center of Khorram Abad located in 5 Km away from the city. Studied factors include variety (Izeh and Mahur) and foliar application of salicylic acid (t six levels including 0, 0.5, 1, 1/5, 2 and 2.5 mM salicylic acid). Results showed that highest spike length, spikelet’s number per spike, spikes number per meter square, 1000-grain weight, biological yield and grain yield observed in Izeh cultivar. Also, highest grain number per spike, biological yield and grain yield obtained in 1.5 mM salicylic acid foliar application. Totally, results showed that Izeh cultivar by more rapid germination and more photosynthesis produced more grain yield and foliar application of SA increased plant resistance to water deficit conditions and increased grain yield of barley.