Study on possibility of Systemic Acquired Resistance Induction in wheat for control of Fusarium graminearum the causal agent of Fusarium head blight i
M. Alimi1, M. Soleimani1, H. Rahimian2, M. Dehghan3
Agriculture and natural Reaserch Center of Golestan
Systemic Acquired Resistance (SAR) occurs in nature following of local infection of foliar tissue of plant by necrotic pathogen. We studied the resistance against Fusarium graminearum, the causal agent of Fusarium head. This experiment carried out in complete randomize with three replicates in greenhouse on susceptible cultivar (Tajan). Treatmenta applied in spray form in stemming stage and tap water used as control. In milky stage of wheat seeds, suspension of spores sprayed on plants. Also three concentrations 200, 400 600 ppm. Under field condition in complete randomize block with three replicates (blocks). Grouping of treatments was done at %5 level using Duncan وs multiple comparison test. At the end of cultural season Disease severity and incidence and the weight of 1000 seeds analyzed statistically and results showed that effect of treatments had significant difference in compare with control, in terms of disease severity, disease incidence and the weight of 1000 grains. They made reduction of disease severity and incidence and increasment of plant growth factors. Worthy of mention that the the most effect among treatmes was for concentration of 600 ppm and the least effect was for 200 ppm.
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