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Stripe rust (barley)
Stripe rust is a fungal disease of barley caused by ''Puccinia striiformis'' f. sp. ''hordei''. It was first detected in the United States in 1991, in northern and eastern Idaho in 1993, In 1995 it was detected for the first time in western Washington and western Oregon and is currently considered to be well established there.〔
(Extension publication - US: Oregon )〕 The disease initially develops at a small loci within a field and spreads rapidly and has caused significant losses in areas where climatic conditions of are cool and wet.
== Symptoms ==
Infections produce linear, orange-yellow pustules appear on leaves and/or heads. As the disease progresses, pustules coalesce to form long stripes between leaf veins. On susceptible cultivars, entire leaf blades may be covered with pustules. The black spore stage develops as linear black pustules covered by the leaf epidermis.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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