| 释义 |
Rhizoctonia|raɪzɒkˈtəʊnɪə|
[mod.L. (A. P. de Candolle Flore française (1815) VI. 110), f. rhizo- + Gr. κτόν-ος murder + -ia1.]
A fungus of the form-genus so called, which comprises sterile fungi some of which cause disease in plants; also, a fungus formerly placed in this genus but reassigned following the discovery of a sexual state. Freq. attrib.
1897W. G. Smith tr. K. F. von Tubeuf's Diseases of Plants ii. i. 201 The spores open by a longitudinal slit, and a germ-tube emerging from each end branches into a mycelium which soon takes on the form of a rhizoctonia-strand. 1916Bull. Illinois Agric. Exper. Station No. 189. 376 There are recognized in America two species of truly parasitic Rhizoctonias. 1927Ann. Appl. Biol. XIV. 290 (heading) Rhizoctonia ‘foot-rot’ of the tomato. 1937F. D. Heald Introd. Plant Path. xi. 226 The damping-off by Rhizoctonia is..serious in both garden and field. 1953F. T. Brooks Plant Diseases (ed. 2) xv. 299 Other fungi producing small sclerotia also attack cereals and grasses, notably Sclerotium rhizodes Auersw., now considered to be a Rhizoctonia. 1965Bell & Coombe tr. Strasburger's Textbk. Bot. 506 Corticium solani causes the Rhizoctonia-disease (a root rot) of potatoes. 1977J. L. Harper Population Biol. Plants vi. 174 Density-dependent mortality is well known in forest nurseries where it is usually associated with pathogenic activity (e.g. Gibson (1956) showed that Rhizoctonia was responsible for killing a higher proportion of seedlings in overcrowded plots). |