تقصي انتشار مرض الصدأ المخطط على الشعير المتسبب عن الفطر Puccinia striiformis f. sp. Hordei في شمال شرق سورية وتقييم شدة الإصابة لبعض أصناف الشعير بالمرض

الملخص EN

A hundred and fourty six of barley fields have been surveyed during growing season 2018-2019 in north eastern of Syriato identify the distribution of barley stripe rust disease which was caused by Puccinia striiformisf.

sp.

hordei.

Diseased leaf samples were collected from farmer’s fields.

Ten local cultivars of barley (Furat2, Furat3, Furat4¸Furat5¸Furat6,Furat7, Arabi aswad, Arta" Arabi abyad muhasan", ACSAD60, and ACSAD176) were evaluated against stripe rust (Puccinia striiformis f.

sp.hordei) under laboratory conditions.

The plants were infested with mixture of urediniospores which were collected from farmer's fields in north eastern of Syria in booting stage under laboratory conditions.

Results of stripe rust survey showed that the distribution of disease was 54.79%.

The highest severity (30S) was recorded in Al-Malikya region, while the lowest severity (1R) was recorded in Al- Hassakeh region.

Results of evaluation the susceptibility of barley cultivars to stripe rust showed that "Furat7 and Arabi Aswad" were the most susceptible cultivars, while "Furat2", "Furat3" and "Furat6" were the most resistant