Study Effects of Nano-Silver Seed Disinfected on Mycorrhizal Symbiosis and Morphology of Barley Root under Drought Stress.

Drought is a major a biotic stress that severely affects agricultural systems and food production. Nano silver penetrates in plant tissue easily and increase nutrient absorption. Because of nano – silver disinfected importance in agriculture, this research were conducted to study effects of seed disinfected in fungi of root symbiosis in three Factor Randomized Complete Block Design (RCBD) Disinfected of two genotypes of barley (hull and hulless) with different concentration nano silver (0, 50,100 ppm and fungicide) in germination stage and planted in pot. Osmotic pressure were done with PEG 6000 (0,-5,-10 and – 15 bar) in germination stage. Also, germination rate, root and shoot height, root and stem dry weight were measured. Seed disinfected planted with mycorrhiza and non – mycorrhiza and watered with hogland solution with PEG ψ = -5 bar.At finally root and shoot height, mycorrhiza dependency, and root and shoot dry weight calculated. Result showed that in drought stress, disinfected seed with 50 ppm nano-silver, highest germination rate differently. In fungicide treatment were showed lowest seed infected. The ratio root dry weight /shoot of hulless barley seed with 100 ppm nano silver decreased differently. Symbiosis of mycorrhiza increased height root. Shoot height and ratio of shoot height / root with 50 ppm nano silver, symbiosis with mycorrhiza increased differently. Fungicide decreased mycorrhiza dependency and in drought stress condition in 100 ppm nano silver was lower differently than 50ppm.