Effect of Spirulina Platensis (gomont) Geitler Extract on Seed Germination of Wheat and Barley

Cyanobacteria has a highly diversity group that consists of photosynthetic prokaryotic microorganisms. Cyanobacteria that produce lots of metabolites such as amino acids, proteins, vitamins etc. have a wide spread. In this study, the effects of different concentrations of Spirulina platensis extracts on the germination of wheat and barley seeds and root-stem length, lateral root number and fresh-dry weight were investigated. The application of S5 (100% cell extract) showed an inhibitory effect on seed germination on both wheat and barley. S2 (25% cell extract) and S4 (75% cell extract) applications had a positive effect on germination and seedling development in wheat. In barley, S2 (25% cell extract) application activated germination and seedling growth and other concentration applications did not create a positive effect. As a result; cyanobacterial extract has positive effects on seed germination and plant growth-development and it is possible to produce a commercial and ecological biostimulant by developing different extract concentrations.