Wheat fungal parasites resistance - from the aspect of the integrated protection in Serbia

Abstract

The resistance to the Puccinia triticina is of the highest importance for the product quality because of the apperience time. Relative short filling period and early maturation is often eaven without rusting. In years for rust development expected higher wheat yields are also impossible without mentioned resistance. On the May 25th when the attack is usually around IO (modified Cobb scale by Melchers and Parker, 1922) on susceptible varieties and the progress in some years very quick, possibilities for the chemical reduction are poor because of carence. Even if the chemicals were applied, the benefit is not so predictable (Jerkovic, 1997). So if we have to have some resistance to parasites in Serbian wheat varieties it is to the leaf rust cause. Nowadays, the different types of the resistance to Puccinia triticina are present in most of the widespread varieties. Uncomplete resistance expressed throw low infection efficiency is prevalent. Only on few varieties, hypersensitivity appeared at the seedling stage (Pesma, Anastasia, Selekta).