Allelopathic effect of Mountain sagebrush (Artemisia aucheri) on seedling emergency and vigor and some related traits Tall tescue (Festuca arundinaseae)

The aim of the this study was to investigate the allelopathic effect of aerial and underground tissues of mountain sagebrush (Artemisia aucheri) on seed germination properties, seedling length, number of leaves, seedling dry weight and seed vigor of Festuca arundinaseae species. For this purpose, species of Ar. aucheri selected from Taleghan rangelands in Tehran Province. Then for 72 hours aerial and underground issues were exposed to direct sunlight. After air drying, obtained powder was used to do the experiment. The provided powder of 3, 6 and 9 grams from aerial and underground tissues of sagebrush mountion (Ar. aucheri)  was mixed with 900 grams of sand in pots and arranged in a completely randomized with four replications. 10 seeds from Festucaarundinaceae  were planted in each pot to 2-3 cm depth and germination percentage, germination rate, mean germination time, seeding length, leaf number, seedling weight and seed vigor was measured. Result showed that above ground and underground parts of Ar. Aucheri reducted germination and vigor characteristics of Festuca arundinaseae. Comparing the influence of aboveground and underground tissues revealed that root effectiveness was more than shoot.Regardless of the type of Artemisia effective compounds, characteristics of this plant on seed germination and early growth of seedlings Festucaarundinaceae have adverse effects that can be considered seriously in developing culture program of these two plants.