استفاده از صفات مرفولوژیک آزمونهای DUS در بررسی تمایز ارقام جو آبی و دیم ایران

Increment of crop yield in plant area is mainly relying on new verities breeding and high quality crop production. During 80 years, barley breeding in Iran, more than 30 barley cultivars have been released which half of them are cultivated now. According to the farmers need to use breaded seed cultivars, importance of production such high quality cultivars especially in basic seed and certified seed is recognized. Inattention in this section will make genetic and physical admixture, and finally it will cause a reduction in crop yield and quality. One of the most important issues in seed production cycle is accuracy recognition of various barley cultivars in different growth stages by the specialist. Provide the description for any variety is very important for recognition of varieties admixture. The description is included morphological characters which they are most controlled by genetic or rarely affected by the environment, so this kind of characteristics expresses uniquely and they can be used as identification key for any variety. In this study 27 barley cultivars (Orayza sativa) were identified by using morphological characters according to national guidelines for the conduct of tests for distinctness, uniformity and stability in barley. In this regard, a randomized complete block design with three replications in 2 years was used. Grouping and comparing based on qualitative characters revealed that all varieties were distinct and then a descriptor was provided for any cultivar. Variance analysis of quantitative characters showed the significant difference among cultivars. Means comparisons of quantitative characters of cultivars by using the least significant difference (LSD) segregated the similar varieties.