Pollen morphology of Poaceae in Ahvaz

The purpose of this study was to describe the morphological characteristics of 21 taxa belonging to Poaceae pollen grains in Ahvaz city. The pollen grains were stained with methylene blue and aceto-carmine and investigated under light microscopic inspections. Based on the results, all pollens were detected in the monad and monoporate pattern. Moreover, the size of pollens in most species are medium to large and spherical in polar view, however, Hordeum spontaneum C. Koch, Lolium rigidum Gaudin and Sorghum halepense L., are detected prolatespheroidal and Bromus rubens L. is observed suboblate in equatorial view. The pollens polarity is heteropolar