| 单词 | crown rust |
| 释义 | > as lemmascrown rust crown rust n. the pathogenic fungus Puccinia coronata, which causes a rust disease of grasses, including oats and many forage grasses; (also) the disease caused by this fungus. [After German Kronenrost (1858 or earlier), the first element of which is in turn after scientific Latin coronata, specific epithet (in Puccinia coronata ( A. Corda Icones Fungorum (1837) I. 6), so called on account of the sharp apical teeth of the spores).] 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 1868 Boston Jrnl. Chem. 1 May 84/1 The spores belong to three species of Puccinia, viz.: P. graminis, striped rust; P. straminis, spotted rust; and P. coronata, crown rust. 1896 Trans. Brit. Mycol. Soc. 1 78 There are the crown rusts, P. coronata and coronifera, whose life-history has been worked out by Klebahn. 1933 Discovery Nov. 351/1 Some years crown rust (Puccinia coronata Corda) on oats amounted to a really serious menace. 1959 A. Beaumont Dis. Farm Crops viii. 107 Crown rust is very common, particularly in the autumn in the south and west of England and Wales. 2005 M. O. Humphreys Molec. Breeding for Genetic Improvem. Forage Crops & Turf 118 Evidence for physiological race variation has been demonstrated for P. coronata f.sp. avenae, the causative organism of crown rust in oat. < as lemmas |
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