单词 | selfing |
释义 | selfingn. Chiefly Botany. Artificial or natural self-fertilization; an instance of this. Occasionally also: a plant produced by self-fertilization. ΘΚΠ the world > plants > part of plant > reproductive part(s) > flower or part containing reproductive organs > flower or flowering plant > [noun] > pollination > self-fertilization self-fertilization1850 self-fertility1865 homogamy1874 autogamy1877 selfing1907 self-compatibility1916 self-pollinating1930 1907 Proc. Royal Soc. B. 79 298 The latter would give crimson delilas only on selfing. 1924 Genetics 9 30 Two such selfings of plants in family J were grown. 1942 Jrnl. Genetics 43 312 Their doubly heterozygous progeny will on selfing produce a range of genotypes with phenotypic differences. 1978 Nature 2 Feb. 441/1 Experimental selfings and crossings each lead to similar and relatively high levels of fruit set. 2006 M. T. Morgan in L. D. Harder & S. C. H. Barrett Ecol. & Evol. Flowers (2007) ii. 234/2 A central focus contrasts the genetic transmission advantage of selfing with the fitness consequences of inbreeding depression. This entry has been updated (OED Third Edition, January 2018; most recently modified version published online March 2022). selfingadj. Chiefly Botany. That carries out, or is capable of, self-fertilization. ΚΠ 1948 C. C. Li Introd. Population Genetics 121 In selfing populations, the heterozygotes will disappear very rapidly and the proportions of the two remaining homozygous types will be those of their corresponding gene frequencies. 1989 Jrnl. Heredity 80 9/1 Outcrossing species appeared to show a higher genetic load than selfing species. 2006 C. G. Eckert et al. in L. D. Harder & S. C. H. Barrett Ecol. & Evol. Flowers (2007) x. 184/1 Selfing species or selfing populations of otherwise outcrossing species occur more often than outcrossers in geographically and/or ecologically marginal habitats, where outcross pollination may be uncertain. 2013 Amer. Naturalist 181 855 (title) Choosy males could help explain androdioecy in a selfing fish. This entry has been updated (OED Third Edition, January 2018; most recently modified version published online March 2022). < |
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