Comparison of carbon nanotubes with chemical and physical treatments to break seed dormancy of Myrtus communis.L

Myrtus communis is distributed in humid and semi-humid regions of Iran and it is important for pharmaceutical and medicinal applications. The current research was set in completely randomized design with factorial experiment and three replications at the research laboratory of the faculty of natural resources-TMU. Because the breeding and growing by seeds is the priority and this is basically in plant production, we tried to achieve higher germination, biomass and production by using of modern treatments of carbon nanotubes along with different concentrations of sulfuric acid, potassium nitrate and boiling water treatments. Finally, the results show that the potassium nitrate with0/2 g/l concentration for 24h and carbon nanotubes treatment at a concentration of 0/1 g/L, both in relation to germination indices such as rate and percentage of germination and associated seedling growth parameters such as seedling root and shoot and seedling dry weight have better performance.SEM micrographs from seed coat proved that adhesion and penetration of particles of carbon nanotubes can be effective in removing physical dormancy.