| 单词 | downy mildew |
| 释义 | > as lemmasdowny mildew downy mildew n. a disease of plants caused by parasitic fungi (oomycetes) of the family Peronosporaceae, typically characterized by discolouration of leaves with formation of mould on the undersurface; (also) a fungus of this family.Each type of downy mildew is usually specific to a narrow range of host plants. See also Peronospora n. ΘΚΠ the world > plants > disease or injury > [noun] > type of disease > fungal > various diseases footrot1706 botrytis1751 leaf spot1846 winter rot1857 leaf blotch1860 downy mildew1886 sun scald1896 Septoria1897 spike-disease1906 fusarium rot1907 hadromycosis1916 verticillium wilt1916 wilt1916 die-off1918 rhynchosporium1918 shoestring rot1931 vascular wilt (disease)1946 1886 Rep. Fungus Dis. Grape Vine (U.S. Dept. Agric. Bot. Div. Bull. No. 2) 7 The fungus diseases of the grape vine... I.—The downy mildew. 1938 G. B. Ramsey et al. Market Dis. Fruits & Veg.: Crucifers & Cucurbits (Misc. Publ. U.S. Dept. Agric. No. 292) 42 The causal fungus, Peronoplasmopara cubensis, is one of the downy mildews. 1970 Times 14 July 10/6 The aim was to produce a variety resistant to downy mildew. 2015 L. A. Ten Eyck & D. Gehring Hop Grower's Handbk. i. 38/1 A couple of growing seasons later we found ourselves waging a war against downy mildew. < as lemmas |
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