Detection and Identification of <i>Botrytis</i> Species Associated with Neck Rot, Scape Blight, and Umbel Blight of Onion

Fig. 4B. Detection of latent infection by Botrytis aclada and B. allii on asymptomatic onion plants sampled from an onion seed crop, placed in cold storage (5 to 10°C) for four weeks, and then incubated in a moist chamber for 5 to 7 days. (B, shown here) White mycelium and gray sporulation on a scape.



Image from Plant Health Progress article:
Detection and Identification of Botrytis Species Associated with Neck Rot, Scape Blight, and Umbel Blight of Onion