Symptom severity and infectivity of BSCTV in the ATHB12 KD and Ws-O.

aAsymptomatic: Inoculated plants were indistinguishable from mock-inoculated plants and inflorescence bolts did not exhibit any abnormal structures.bMild symptoms: Mild curling of inflorescence shoot tips and inflorescence bolt height was comparable to control plants.cSevere symptoms: Severe curling of bolts, malformed inflorescence structures, and severe stunting of plants.