Study on establishment of some native species of Rosaceae family in national botanical garden of Iran

This project focused on collecting and planting of the Rosaceae and their establishment in order to protect these species and to enhance species biodiversity of the national botanical garden of Iran. Finally, some of the native and economically valuable species which are able to survive in the National Botanical Garden are introduced. Results showed that 16 genuses of Cerasus, Cotoneaster, Crataegus and Prunus were established in the garden. Seeds and seedlings of Cerasus incana (Pall.) Spach. Transferred from the natural habitat and established in arboretum of the national botanical garden. Other species of this genus were established by transferring seedlings and the time of collection and transmission had no effect on the establishment of them. Crataegus microphylla Koch. and Crataegus myerii Pojark. were established by both seed germination and seedling planting and survived very good but others species of Crataegus, Prunus and Cotoneaster were only established by seedling and the best time of establishment is April to May, before opening of leaf buds and October to November after seed maturation. Phenological studies on 16 established species showed that start time of vegetative and reproductive growth of these species is related to temperature and light. Generally, viability and growth of transferred seed-originated samples is more than planted seedlings.