Genetic diversity Evaluation of Elymus hispidus and E.pertenuis In Isfahan Province

For Forage plant production that my country need, we must know Forage plantproduction sources especially Grasses, carefully and completely. This project was done for found genetic parameters information and data of 2 forage grasses species genotypes include of 35 accessions of Elymus hispidus and 41 accessions of E.pertenius from 2001. At first we collected accessions seed samples of this 2 forage grasses species from 10 Islamic Republic of Iran provinces. Seed accessions were cultivated through sward method and spaced method in irrigated condition of Shahid Fozweh Research Station and in dry condition of Zayanderood Watershed Management Research National Station in form of randomize complete blocks design with 3 replications in autumn of 2002. In 2003 didn't record any data, due to insufficient plants growth. Characters included of seedling establishment, plant succulence, plant height, forage dry yield, ear emergence, leaf width, ear length, biological persistency, digestibility, soluble carbohydrate, Crude Protein (CP), Crude fiber (CF), neutral detergent fiber (NDF) and Total ash (ASH) were determined from 2004 to 2005. Results of combined analysis of variance were shown there are significant differences between E. hispidus accessions. Accessions of Ghalaeh Arezomand 2, Ghalaeh Arezomand 3, Dolatgharin, Bidghatar, Meymand and Bijar were the best genotypes with 2028-4476 Kg/ha forage yield. Dry forage yield total average of E. hispidus species was 1.9 Ton/ha. The correlation between dry forage yield with plant succulence, biological persistency and soluble carbohydrate were positive significant but with ASH was negative significant. The relationships between dry forage yields with other characters were low and unstable. The correlation between digestibility with plant height, CF and NDF were negative significant but with CP and ASH was positive significant. The correlation between CP with plant height and CF were negative significant but with digestibility and ASH was positive significant. In stepwise regression equation, biological persistency, ear emergence and soluble carbohydrate as independent variable have the highest effect on dry forage yield as dependent variable. Main components analyses were shown in addition the first 3 components cause 73% data differences. Coefficients specific vectors in first component include of plant height, digestibility, soluble carbohydrate, CP, CF and ASH, and in second component include of plant succulence, biological persistency, forage dry yield and NDF had important role in grouping of genotypes. Cluster analysis shown genotypes were in 4 groups. Results of combined analysis of variance were shown there are significant differences between E. pertenius accessions. Accessions of Dareh Bid, Meymand and Eghlid were the best genotypes with 2294-2963 Kg/ha forage yield. Dry forage yield total average of E. hispidus species was 1.4 Ton/ha. The correlation between dry forage yield with plant succulence, leaf width, plant height and ear length were positive significant. The relationships between dry forage yields with other characters were low and unstable. The correlation between digestibility with ear emergence and NDF were negative significant but with CP and soluble carbohydrate was positive significant. The correlation between CP with ear length and soluble carbohydrate were negative significant but with digestibility and ASH was positive significant. In stepwise regression equation, leaf width, plant height, NDF and steam number as independent variable have the highest effect on dry forage yield as dependent variable. Main components analyses were shown in addition the first 5 components cause 79% data differences. Coefficients specific vectors on first component include of plant height, plant succulence and dry forage yield, and on second component include of plant leaf width, soluble carbohydrate and NDF, and on Third component include of ear emergence, digestibility and CP, and on Fourth component include of steam number and cf , and on Fifth component include of ear length and biological persistency had important role in grouping of genotypes. Cluster analysis shown genotypes were in 5 groups.