| 单词 | biological race |
| 释义 | > as lemmasbiological race b. Biology. More fully biological race, physiological race. A population within a species that is morphologically indistinguishable from other populations but distinct in its physiological behaviour; esp. a strain of a pathogen which can only infect particular hosts. ΘΚΠ the world > life > biology > taxonomy > taxon > [noun] > species or sub-species shapec1400 species1608 subspecies1681 semispecies1825 infima species1843 conspeciesa1856 incipient species1859 relic1873 biological species1876 biological race1878 microspecies1897 clan1916 Jordanon1916 twin species1931 supraspecies1938 sibling species1940 species pair1942 phenon1943 biospecies1953 ochlospecies1962 1878 Harper's Mag. June 155/2 In the Bibliothèque Universelle, of Geneva, De Candolle has an article on the ‘Existence of Physiological Races in Species of Plants’. 1896 Bot. Gaz. 21 99 A species having two well marked physiological races, one maintaining itself on rye and the other on wheat. 1909 E. Warming et al. Oecol. Plants ii. xxv. 85 Viscum album..is another such species, of which one race can be parasitic upon about fifty species of dicotylous trees, and other races upon several kinds of coniferous trees;..they are physiological races (the..‘biological races’ of Rostrup). 1946 A. Nelson Princ. Agric. Bot. xxv. 476 Either the black rust fungus of India and South Africa is of a different biological race from that of Australia, or growth in the new environment had so altered the wheat that the resistance mechanism failed. 1947 Ann. Rev. Microbiol. 1 72 The amount of labor involved in identifying different races of these rust fungi on a series of differential hosts precludes the possibility of exploring the total variation that might occur among the progeny of even a single cross. 2006 Jrnl. Exper. Bot. 57 2093/1 Physiological races of powdery mildew (Podosphaera xanthii) cause different symptoms in eight melon lines. < as lemmas |
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