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

Fig. 1B. Common postharvest symptoms, caused by Botrytis aclada and B. allii on onion bulbs. (B) Severe neck rot showing decay of the fleshy scales, shrinkage of the bulb, and black sclerotia (arrow) forming in the neck and shoulders of the bulb.



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