| 释义 |
introgressive, a. Biol.|ɪntrəʊˈgrɛsɪv|
[f. introgression + -ive.]
Characterized by, bringing about, or resulting from introgression; introgressive hybridization, introgression; hybridization leading to introgression.
1938Anderson & Hubricht in Amer. Jrnl. Bot. XXV. 396 We have therefore given it a distinctive name, introgressive hybridization. Ibid. 398 The introgressive effect of T. canaliculata. 1950G. L. Stebbins Variation & Evolution in Plants vii. 263 The habitat provides an ecological niche for the establishment of the introgressive types. 1968J. A. Serra Mod. Genetics III. xx. 199 The introgressive introduction of some loci of Nicotiana plumbaginifolia into N. tabacum. 1970Watsonia VIII. 85 (heading) Introgressive hybridisation between British annual Senecio species. 1971V. Grant Plant Speciation iv. 51 Such bridging populations of hybrid origin fall into two general classes: hybrid swarms and introgressive populations. 1971G. L. Stebbins Chromosomal Evolution Higher Plants v. 149 The phenomenon of introgressive hybridization or introgression is a sequence of three processes: hybridization, back crossing, and natural selection of back cross derivatives in a habitat where they are superior to either of the original parents. |