The study of adaptation and performance of some species of thyme under dry farming conditions

To perform this research; initially, species of thyme were collected and identified in different habitats of Guilan province. These species include T. kotschyanus, T. caucscus sub sp. grossheimii, T. fedtschenkoi and T. pubesense. By ripening the seeds of these plants, the seeds were collected and it was begun ti produce seedlings and the seedlings were cultivated during February (or January). The studied site is located on dry farming lands surrounding shook (Ashkoor owliya) Village in Rood sar. This experiment was performed as split plot within. The framework of perfectly (quite) randomized block basis design in three repetitions. In this study, four species of thyme as original (primary) treatment and density as secondary treatment in three levels of 4,7,10 bushes per square meter (m2) were cultivated. During harvesting, for study of traits, 5 bushes were randomly selected from each plot and the percentage of bush establishment, the number of stems (stalks) in each bush, bush height, aerial organ’s performance, essence percentage and essence performance were examined. The obtained results show that the greatest performance was obtained by T. kotschyanus species and by a slight difference, T. fedtschenkoi species has the greatest density by 10 bushes and the least of them was obtained by T. caucscus sub sp. grossheimii by a density of 7 bushes in surface unit and the highest performance of aeral organ is related to. T. fedtschenkoi by a density of 10 bushes and the least of them is related to T. caucscus sub sp. gro ssheimii by a density of 4 bushes per square meter (m2).