“四字号”玉米杂交种遗传基础的分析与评述

从“四字号”玉米杂交种的种质分析结果看 ,其遗传基础主要来源于塘四平头、美国Lancaster、ReidYellowDent、旅大红骨子等系统。而Lancaster选系及其衍生系在“四字号”玉米杂交种中占主导地位。 30个玉米杂交种有 14个是具有Lancaster血缘的亲本所组成 ,而ReidYellowDent血缘系的应用近年上升为主导地位。 80年代初期以英 6 4、oh4 3、M14、吉 6 3为主 ;80年代后期以Mo17、黄早 4为主 ;90年代初期以丹 340、792 2为主 ;90年代后期以改良Reid系为主 ,并开始应用785 99的改良系。“四单号”、“四密号”、“四早号”玉米杂交种的育成对我国玉米生产的发展及提高起了重要作用 ,并获得了巨大的经济效益。

Analysis and Evaluation of Genetic Base of Sidan Series Maize Hybrids

The maize hybrids were analyzed that were bred in Siping Academy of Agricultural Sciences in Jilin province.The result showed that Tangsipingtou,Lancaster,Reid Yellow Dent and Ludahongguzi are main genetic base of Sidan series maize hybrids.Firstly,the maize genetic base is Lancaster.The fourteen of thirty maize hybrids parents are Lancaster's and their derived inbred lines.Secondly,genetic base is Reid Yellow Dent.It is increasing and becoming important genetic materials.Recently,inbred lines improved from 78599 lines are being used in maize breeding.Maize hybrids of Sidan,Simi and Sizao played important role in China maize production and increased economic benefits.