山东省玉米杂种优势利用和种质创新研究

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。

Study on Maize Heterosis Utilization,Germplasm Improvement and Innovations in Shandong Province

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.