Mohammad H. Sayyari-Zahan has completed his PhD at the age of 40 years from University of Goettingen from Germany. He is the deans of agriculture faculty, University of Birjand. He has published more than 40 papers in reputed journals and has been serving as an editorial board member of various International Journals.
Priming and biologic treatments of seeds are effective methods in growth enhancement of medicinal plants. A pot experiment was carried out in the greenhouse of Agriculture Faculty, University of Birjand with factorial CRD statistical design in 2011. Before planting seeds were treated by different bacteria and primed with different concentration of potassium dihydrogenphosphate as well and then seeds sowed in pot soil and irrigated up to field capcity moiasture which before was calculated. Factors were 1- Bacteria treatments a(Pseudomonas sp 168), b(Pseudomonas sp 187), c(compose of Pseudomonas sp 168 and Pseudomonas sp 187) and d(without Bacteria treatment), 2- priming with KH2PO4 (50 mM concentration and without priming). Results showed that bacteria application had increase in shoot fresh weight, dry matter and plant height. Interaction between seed priming and biologic treatments was significantly effective on shoot dry matter. It is concluded that compose of Pseudomonas sp 168 and Pseudomonas sp 187 caused higher amounts of dry matter when it combined with priming.