بررسی ارزیابی اکسشن های دو گونه ‭Agropyron ‬برای عملکرد و کیفیت علوفه در شرایط دیم و آبی استان خراسان رضوی

In order to study of variation and relationships among yield and quality traits, 19 accessions of Elymus hispidus and 18 accessions of Agropyron cristatum were sown in two separate experiments using randomized complete design with three replications in Mashad, Iran during 2007 to 2009. No data collected in establishment year. In the second year data were collected and analyzed for morphological traits as: plant height. Establishment rate, plant stand, ear emergence date, stem number, frsh, and DM yield for three cuts per year. Five quality traits as; dry matter digestibility (DMD), water soluble carbohydrate (WSC), crude protein (CP), Acide detegent fibre (ADF) and total ash were estimated in the first cut. The results of botanical examined of Elymus hispidus reveald onlt 12 out of 19 was belong the same species and they classified as hispidus, podperae and villosus varieties. The results showed significant differences among accessions for the most of traits. For establishment rates, the higher values 82% were obtained for Bidsobhan (E.hispidus). In A.cristatum the highest establishment rate were recorded for as 100% for 1722m and 208p2. In comparison among varieties, all of villosus accessions had higher values for DM yield than other vanities. The Chartag (villosus) with average values of 7732 Kg.ha-1 had moderate quality than other accessions. For A. cristatum the accessions 208m with average values of 15260 Kg.ha-1 for total annual yield had higher production couple with moderate DMD and CP. Key words: Agropyron cristatum, Elymus hispidus, (hispidus, podperae and villosus) yield quality.