释义 |
black rot noun : any of various diseases of cultivated plants caused by fungi or bacteria and producing dark brown discoloration and decay: as a. : a disease of the apple, pear, and quince caused by a fungus (Physalospora cydoniae) b. : a disease of the grape caused by a fungus (Guignardia bidwellii) — see grape rot c. : a disease of cabbage and related plants caused by a bacterium (Xanthomonas campestris) d. : a disease of the sweet potato caused by a fungus (Ceratostomella fimbriata) e. : a disease of the potato caused by a bacterium (Erwinia atroseptica) |