Effects of Cyanobacterial application on production on phytohormones responsible for growth in wild and cultivated barley genotypes

Due to the growing need of human race for food production, the use of biofertilizers to improve the quantity and quality of agricultural yield is increasing. Cyanobacteria are a diverse group of prokaryotes that possess a high potential for biofertilizer applications. The present study examined the effects of cyanobacteria, Phormidium sp., as a biofertilizer on growth and production of phytohormones responsible for growth in wild and cultivated barley (Hordeum vulgare L.) genotypes. For cyanobacterial application, Phormidium suspension with a concentration of ۴ g L-۱ was added to the soil two weeks prior to the sowing the seeds. Phormidium treatment led to increase in content of auxin, gibberellic acid, kinetin and zeatin in both wild and cultivated barley genotypes. The increase in content of auxin, kinetin and zeatin was more prominent in cultivated genotype compared to wild genotype. Similarly, Phormidium treatment caused an increase in absorption and content of nitrogen and potassium in both genotypes. Increase in growth indices including dry weight was also observed upon Phormiduim treatment in both cultivars. Considering remarkable growth promoting effects and positive effects of production of phytohormones in barley, Phormidium may offer a candidate as biofertilizer in sustainable barley production.

کلیدواژه ها:

Auxin ، Biofertilizer ، Cytokinin ، Gibberellins ، Phormidium