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

Fig. 1E. less common preharvest symptoms, caused by Botrytis aclada and B. allii on onion bulbs. (E) Sporulation of B. aclada or B. allii on the surface of an onion plant under moist field conditions.



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