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单词 powdery mildew
释义

WordReference Random House Unabridged Dictionary of American English © 2024
pow′dery mil′dew, 
    1. Fungiany of various parasitic fungi of the ascomycete order Erysiphales, which produce a powderlike film of mycelium on the surface of host plants.
    2. Fungi, Plant Diseases[Plant Pathol.]a disease caused by powdery mildew, characterized by yellowing and death of the foliage and a white mealy growth of fungus on the surface of above-ground parts.
    • 1885–90, American.

Collins Concise English Dictionary © HarperCollins Publishers::
powdery mildew n
  1. a plant disease characterized by a superficial white powdery growth on stems and leaves, caused by parasitic ascomycetous fungi of the family Erysiphaceae: affects the rose, aster, apple, vine, oak, etc
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更新时间：2025/2/23 10:48:04