the study of breaking dormancy and evaluating the effect of planting substrates on the success of the reproduction of several desert and medicinal species resistant to drought and salinity..

The development of urban green space is one of the important requirements of today s life in big cities, in the meantime, due to the lack of water, plants that are resistant to salinity should be used, and at the same time, economical substrates should be used. however, choosing suitable species and seed germination and plant establishment are important challenges. in this study, several medicinal and pasture plants such as ajowa, atriplex, sophora mollis, evening primrose and vitex and clover and alfalfa species which are fodder plants have been compared. in this study, first, the best methods of breaking dormancy of the seeds were studied, and while choosing and introducing the best method of planting and establishing them, it was investigated in a completely random factorial design with three types of planting substrates. the results indicated that the planting substrate, one of which was a degradable pot, was completely different from the rest in the four-leaf and six-leaf stages. among the seven investigated plant species, the plants reactions in germination and establishment were completely different, and the amount of sprouts in alfalfa at all stages was more than the others, but according to the treatments applied to atriplex canecens (use of boiling water for 7 stages of 5 seconds), ajowa (soaking in lukewarm water) and sophora mollis (prechill treatment for two weeks at temperature 0-5 °c and gibberellic acid 500 ppm) had higher germination after alfalfa, and only vitex, dichondra clover and evening primrose had the lowest germination rate. also, it was ranked first in terms of germination speed, and the growth rate of evening primrose, clover, and sophora mollis seeds was higher than the others, and the growth rate of atriplex, vitex, and ajowa were in the next ranks. in general, the use of degradable pots and the application of dormancy-breaking treatments before sowing seeds such as sophora mollis , atriplex and ajowa can lead to an increase in plant establishment. of course, these degradable substrates do not have much effect on the rate of two-leaf and four-leaf formation and growth speed, but they are very favorable in the stages of transfer to the ground and establishment, they save labor