贵州玉米自交系杂交种的选育分析

对贵州省审定的137个玉米杂交种进行分析结果表明,贵州省早期玉米杂交种的选育主要是直接从地方品种中分离自交系和从北方引进温带玉米自交系组配杂交种。20世纪90年代后期加强了从引进的热带玉米群体中分离自交系。“十五”以来,加快了地方种质、热带种质和温带种质的相互改良和自交系选育,组配并审定了更多的优良玉米杂交种用于玉米生产。此外,就下一步贵州玉米种质的扩增、改良和创新提出了几点建议。

Analysis on Breeding of Maize Inbred Lines in Guizhou

The results from analyzing 137 maize hybrid varieties approved by Guizhou Crops Variety Examination Committee showed that maize hybrid varieties were bred from inbred lines selected from local varieties inbred lines introduced from the temperate region before 2000,and the inbred lines were selected from maize population introduced from the tropical regions the late 1990s.Since 2000,the more quality maize hybrid varieties approved by Guizhou Crop Variety Examination Committee have been used in maize production by speeding up the improvement among local,temperate and tropical germplasm resources and breeding of inbred lines.The paper puts forward some suggestions for increasement,improvement and innovation of maize germplasm resources in Guizhou.