山东省玉米杂交种的种质基础和创新利用分析

Analysis on germplasm background and developing utilization of maize hybrids in Shandong Province

对 1990～ 1999年山东省主要推广玉米杂交种的种质基础、杂种优势群、杂交优势模式以及种质改良创新研究进行分析。结果表明 :生产用玉米杂交种种质基本上由Reid、唐四平头、外杂选、Lan 和旅大红骨 5大核心种质类群组成 ,种质基础更趋狭窄。有 6种杂交优势利用模式 ,但目前利用最多的有Reid×外杂选、Reid×旅大红骨和Reid×唐四平头 3种模式。

The germplasm background, heterosis groups, heterosis models, germplasm improvement and innovation of main commercial maize hybrids from 1990 to 1999 in Shandong Province were analyzed The results showed that the germplasm of main commercial maize hybrids are composed of Reid, Lancaster, Tangsipingtou, Waizaxuan and Ludahonggu group The germplasm background becomes more and more narrow Now there are six heterosis models in Shandong, with three models widely used (Reid×Waizaxuan, Reid×Ludahonggu, Reid×Tangsipingtou) In addition, significant progress in maize germplasm improvement and innovation have taken place in Shandong Province Studies on maize germplasm improvement and innovation in the future are discussed