| 单词 | black rust |
| 释义 | > as lemmasblack rust black rust n. any of several plant rusts producing black discoloration, esp. the winter or teliospore stage of Puccinia graminis, a serious pathogen of wheat and other cereals. ΘΚΠ the world > plants > disease or injury > [noun] > type of disease > fungal > rust disease or condition of having rustOE rustinga1398 canker?c1425 black rust1785 red gum1794 red rust1806 rust disease1816 red robin1821 red rag1841 crown rust1868 rustiness1882 stem rust1899 1785 R. Baker Let. 27 July in Lett. & Papers Agric. (Bath & West of Eng. Soc.) (1788) 4 282 The bearer hereof, Richd Winsor, of Berry-Pomeroy, near Totnes.., has found out a method of curing the Black-Rust in wheat. 1887 Amer. Naturalist 21 1117 Farmers say the red rust of wheat produces comparatively slight injury, while the black rust is destructive. 1904 T. F. Hunt Cereals in Amer. vi. i. 96 There are two stages of rust found on the wheat plant:..(2) the black rust, caused by elongated two-celled teleutospores. 1996 Chiltern Seeds Catal. 35 This particular species [of barberry] has the misfortune to be the alternate host of the Black Rust of Wheat and it should not therefore, be planted in wheat-growing districts. < as lemmas |
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