Occurrence of Viroids in Commercial Hop (<i>Humulus lupulus</i> L.) Production Areas of Washington State

Fig. 2. Early growth of young ‘Glacier’ hop plants infected with Hop stunt viroid exhibit bright yellow foliage at the base of the plant. The discoloration became less pronounced during the growing season but infected plants continue to exhibit poor growth.



Image from Plant Health Progress article:
Occurrence of Viroids in Commercial Hop (Humulus lupulus L.) Production Areas of Washington State