赤拟谷盗高度选育群体中杂种优势性状的杂交种与纯种选择比较

Comparison of crossbred and purebred selection for a heterotic trait in highly selected populations of Tribolium.

作者信息

McNew R W, Bell A E

出版信息

J Hered. 1976 Sep-Oct;67(5):275-83. doi: 10.1093/oxfordjournals.jhered.a108731.

DOI:10.1093/oxfordjournals.jhered.a108731

Abstract

Selection on the basis of crossbred performance (RRS) was compared for 11 generations to within-line selection based on purebred performance (WLS) for a heterotic trait, 13-day larval weight in Tribolium populations previously subjected to 30 generations of purebred selection. RRS crossbreds gained slightly less than crossbreds of WLS populations. RRS purebreds showed a much smaller composite populations were greater than those observed for the continued populations. A model for the genetic control of larval weight is suggested in which there are both dominant and overdominant loci and homozygotes are less fit than heterozygotes.

摘要

在先前经过30代纯种选择的赤拟谷盗种群中，针对一个杂种优势性状（13日龄幼虫体重），将基于杂交性能的选择（RRS）与基于纯种性能的系内选择（WLS）进行了11代的比较。RRS杂交种的增重略低于WLS种群的杂交种。RRS纯种显示出一个小得多的复合种群大于持续种群所观察到的种群。提出了一个幼虫体重遗传控制模型，其中既有显性位点又有超显性位点，并且纯合子的适应性低于杂合子。