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

Fig. 1G. less common preharvest symptoms, caused by Botrytis aclada and B. allii on onion bulbs. (G) Sporulation of B. allii or B. aclada revealed by pulling back the outermost fleshy scale of an infected plant after very 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