河南省玉米杂交种种质基础及杂优模式群构建

The Analysis of Basic Germplasm for Corn Hybrids and The Structure of Modeling Groups of Higher Heterosis in Henan Province

对“七五”、“八五”河南省已审定命名的玉米杂交种的种质基础分析结果表明：河南省玉米杂交种亲本来源主要有Ｒｅｉｄ系统（Ａ），塘四平头系统（Ｂ），旅大红骨系统（Ｃ）及Ｌａｎｃａｓｔｅｒ系统（Ｄ）。杂种优势利用模式是：（Ａ×Ｂ）、（Ａ×Ｃ）、（Ｄ×Ｂ）、（Ｄ×Ｃ）。基于这一分析，提出了适应本省的更高一级的杂优模式配对群构建的设想。

According to analysis on germplasm basic of maize hybrids which were developed during the Seventh and Eighth “Five-year Plan”in Henan province,the majority of their parent resources were:Reid Yellow Dent system (A),Tangsipintou system (B),Ludahonggu system and Lancaster system(D).The combination models of heterosis were:(A×B)、(A×C)、(D×B)、and (D×C).Based on this results,the author pointed out an thought of structuring about mate model for heterosis in Henan province.