Behrooz Salehi-Eskandari; Mohsen Kaviani
Abstract
Astragalus, is one of perennial and various species which is expanded in an Iranian’s ranges. In regard to the expansion of plant shoot in grassland with steep, we can use it to prevent soil erosion. Also, we use some species of Astragalus to gum tragacanth extract. This study aimed to identify ...
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Astragalus, is one of perennial and various species which is expanded in an Iranian’s ranges. In regard to the expansion of plant shoot in grassland with steep, we can use it to prevent soil erosion. Also, we use some species of Astragalus to gum tragacanth extract. This study aimed to identify methods of dormancy breaking and characters of germination in four species that was designed. Seeds of four species A. brevidens, A. podolobus, A. caragana, and A. cyclophyllus were purchased from the Seeds Institute of the name of Isfahan Pakan Bazr. Treatments used for the experiment were dry chilling for 15 and 30 days, moist chilling for 15 and 30 days, scarification with sandpaper, and gibberellic acid (GA3, four levels). The results demonstrated that treatments of scarification and moist chilling for 15 days are the most effective treatments to increase seed germination. The majority of species moist chilling for 15 days can significantly increase the germination index while minimum germination index belongs to scarification, which consequently increased the mean germination time. Between the species, the A .caragana has the most germination percentage and germination index, which shows the highest compatibility of this species to the ecological condition in an Iranian Ranges.
