大麦胶含量的遗传分析

本文通过Hayman等人的双列分析系统对籽粒大麦胶含量进行了遗传研究。结果表明,控制大麦胶含量的基因系统符合加性-显性模型。大麦胶含量受微效多基因控制,加性效应起着主要的作用,也存在显性效应,而上位效应不明显。显性方向不十分一致,但总的趋势是低大麦胶含量为部分显性。环境对大麦胶含量有一定影响,但基因型—环境互作效应不显著。大麦胶含量与淀粉含量呈负相关(P<0.01);与株高呈弱正相关(P<0.05);而与千粒重、蛋白质含量无相关。

Genetic Analysis of Gum Content in Barley

The model of inheritance of gum content in barley grain was analysed in present experiment according to the method suggested by Hayman.The results showed that a simple additive-dominance genetic system was involved in the control of gum content.The character was controlled by a polygenic system in which additive effect played a more importent role than non-additive effect,and low gum content was partially dominant.Although environment effected gum content,there was no significant genotype-environment interaction.Gum content was correlated with starch content negatively (P<0.01),and with plant height positively (P<0.05),however,it was not correlated with both 1000-kernel weight and protein content.