生物型
Occurrence, development, and mechanism of planthopper insecticide resistance are discussed, along with proliferation of the resistant biotypes. 对褐飞虱抗药性的形成和发展及其抗药性机理等方面进行了综述，并对该虫的再猖獗进行了探讨。
Briselden AM, Hiller SL. Longitudial study of the biotypes of Gardnerella vaginalis. J Clin Microbiol 1990;28:2761. 吴爱武
RESULTS Eleven biotypes,18 antibioticgrams,9 serotypes and 18 plasmidgrams were detected in the 97 strains. 结果97株菌分11个生物型，18个抗菌谱型，9个血清型与18个质粒谱型，但分型率高低不一。
The result of such combined effects of the genetic system and the environment is strong homozygosity of the biotypes found by the author. 遗传系统和环境的这种联合效应的结果，使作者看到了生物型的强纯合性。
The only disadvantage is that it may trigger the selection of new biotypes that are able to attack the resistance cultivars. 唯一不利之处是可能促进新生物型的选择，危害抗虫品种。
