中国农业科学（英文版）2007，Vol.6Issue(5)：628-633,6.
Inheritance of Ear Tip-Barrenness Trait in Maize
Inheritance of Ear Tip-Barrenness Trait in Maize
摘要
Abstract
The aim of this paper is to study the inheritance pattern of ear tip-barrenness trait in maize (Zea mays L.). Ear tipbarrenness trait in maize can be classified into two types, tip-barren and tip-barrenless. Two inbred lines, Ix01-3 (tipbarrenless type), wx04-1 (tip-barren type), and their F1, F2, BC1, BC2 generations were analyzed on their ear tip-barrenness types. Results showed that F1 was tip-barren type; the ratio of tip-barren type versus tip-barrenless type followed a 12.78∶1 ratio in F2 segregation population and a 2.75∶1 ratio in BC1. χ2 test indicated that the trait of ear tip-barrenness type followed an inheritance pattern of 2 duplicate dominant genes. SPSS analysis indicated that the trait of ear tip-barrenness length is of abnormal distribution. Above results mean that: (1) The trait of maize ear tip-barrenness type is controlled by2 duplicate dominant genes; tip-barren type is dominant over tip-barrenless type; (2) the trait of tip-barrenness length is a quantitative character controlled by polygene with major genes expected.关键词
maize/ear tip-barrenness type/fructification habit/dominant inheritance/duplicate genesKey words
maize/ear tip-barrenness type/fructification habit/dominant inheritance/duplicate genes分类
农业科技引用本文复制引用
MENG Zhao-dong,ZHANG Fa-jun,DING Zhao-hua,SUN Qi,WANG Li-ming,GUO Qing-fa,WANG Hong-gang..Inheritance of Ear Tip-Barrenness Trait in Maize[J].中国农业科学（英文版）,2007,6(5):628-633,6.基金项目
This study was supported by the National 863 Program of China (2002AA207008), and the Project of Agricultural Structure Adjustment in China (04-03-03B). （2002AA207008）
