Evaluation of dry matter yield in flowering stage and morphological traits in Mentha pulegium L. and Mentha mozaffariani Jamzad

In order to study the biomass yield in flowering stage and morphological traits in
Mentha spp., 17 accessions of M. pulegium L. and 8 accessions of M. mozaffariani Jamzad were assessed in a field experiment over two years in the Alborz research station, Karaj Iran. The accessions were planted using a complete randomized blocks design in two replications. Each plot contained 15 spaced plants with 0.5 m intervals and 75 cm between rows. The drip irrigation system was used. Data were collected for fresh and dry matter yield over two years and plant height, stem number, number of flowers per plant, the canopy area, and flower length for one year. Data were analyzed, and species means were compared based on DMRT Method. The results showed significant difference between the species for all traits except dry matter yield (P