中国农业科学 ›› 2005, Vol. 38 ›› Issue (09): 1931-1936 .

• 研究简报 • 上一篇    

超甜玉米果穗形态和品质性状的杂种优势及遗传分析

王晓明,谢振文,曾慕衡,乐素菊   

  1. 江汉大学医学与生命科学学院
  • 收稿日期:2005-02-22 修回日期:1900-01-01 出版日期:2005-09-10 发布日期:2005-09-10
  • 通讯作者: 王晓明

Heterosis and Inheritance Analysis of Ear Shape and Quality Characters in Super Sweet Corn

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  1. 江汉大学医学与生命科学学院
  • Received:2005-02-22 Revised:1900-01-01 Online:2005-09-10 Published:2005-09-10

摘要: 本文采用杂种优势和Hayman分析方法,研究了超甜玉米商品性状的杂种优势及其遗传特性,结果表明:超甜玉米秃顶长和行粒数易受双亲影响,加性效应起主导作用。含糖量和果皮厚度遗传符合“加性-显性”模型,而且控制该性状的基因对数都在3对以上,它们的狭义遗传力分别是53.0%和29.6%;其中控制含糖量的加性效应比显性效应更重要,而控制果皮厚度的显性效应比加性效应更为重要,同时有超显性现象的存在。

关键词: 超甜玉米, 杂种优势, 遗传, 含糖量, 果皮厚度

Abstract: Heterosis and inheritance of commodity characters were studied by heterosis analysis and Hayman. The results indicated that bald length and kernels per row in super sweet corn were easily affected by parents which the additive effect made main rule. Inheritance of sugar content and pericarp thickness conformed to the “additive-dominant” model and the characters were controlled by more than 3 pairs of genes, which the heritability in a narrow sense were respectively 53.0% and 29.6%.Sugar content was controlled by additive effect having more importance than dominant effect and pericarp thickness was controlled by dominant effect having more importance than additive effect . there existed super dominant effect.

Key words: Super sweet corn, Heterosis, inheritance, sugar content, pericarp thickness