摘要
本文对 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、塘四平头、外杂选、Lan 和旅大红骨五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×塘四平头 3种模式。我省玉米种质的改良和创新研究取得了显著成效。对今后玉米种质的改良和创新研究提出了一些建议。
The germplasm background,heterosis groups,heterosis models,germplasm improvement and innovations were studied on main commercial maize hybrids in Shandong Province in 1990～1999.The results showed that germplasm of main commercial maize hybrids are composed of Reid,Lancaster,Tangsipingtou,Waizaxuan and Ludahonggu group.The germplasm backgroud of commercial maize hybrids in Shandong Province became more and more narrow.There were six heterosis models in Shandong Province now,but widely used three models of them were Reid×Waizaxuan,Reid× Ludahonggu,Reid×Tangsipingtou.That sinificant progress has been taken place in Shandong Province. Studies on maize germplasm improvement and innovatins in the future were discussed.
出处
《玉米科学》
CAS
CSCD
2001年第4期10-13,共4页
Journal of Maize Sciences
基金
农业部948引进项目"优良玉米自交系和种质资源的引进
改良与利用"课题
项目编号:农业部971005
关键词
玉米
杂种
种质创新
杂交优势模式
Maize germplasm background
Heterosis groups
Heterosis models
Germplasm improvement and innovations.
