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Barleycv.cebada capa which carries the pa 7 gene for resistance is suscoptible to raccs , F,BRS 76.12 and BR/EST of p.hordei otth . at5°C and is resistant to these races at highcr trpcrature (25C). In comparison cv. C11243 carrying the P9, resistance gene is susceptirilc at hiqher temperature (25°C) and resistant at 5C.
CV. Ribari which carries the Pa3 gene was resistant to race F and susceptible to races BRS76.12 and BR/ESTat all temperature but the susceptibility of Rika 1 to these races was not affected by changing the temperature.
Two temperature-sensitivie cultivars Cebada Capa and C11243 give an intermidiate reactlr)ri a temperature of 15°C.
Pre—inoculation temperature had no effect on infection type of barley varieties
The results of studies on.flaq leaves of C11243 and Rika 1 which was inocu1a’-d wish thr races f P.hordei at 25°C showed that the relative number and of rst was s1iqh+-y less nd the chiorotic aeas around pustules in some
cases were greater than those of the other leaves of the Plants