南斯拉夫玉米杂交种的间接利用价值研究初报

Study on the indirect utilization of the introduced Yugoslovia maize hybrids

通过对选自南斯拉夫玉米杂交种的10个优良S3代选系与国内属于不同优势类群的6个骨干自交系杂交组配而成的60个测交组合的配合力和杂种优势分析,研究了引进南斯拉夫材料杂交种的间接利用价值.结果表明,10个优良杂交种后代选系的GCA,SCA均存在极显著差异,801-2-1-1,805-1-1-1的GCA达到显著和极显著水平,组配出高优势组合的概率较高;7个组合的穗粒重极显著超CK6 31%～27 11%.

A study was conducted on the indirect utilization of the introduced Yugoslavia hybrids through 60 testcrosses from 10 S3 lines crossing with 6 Chinese elite inbred lines belonging to different heterotic groups. The results showed that the GCA of 801-2-1-1,805-1-1-1 was significantly positive and thus more elite crosses could be made with them.The perplant yield of the 7 testcrosses was significantly higher than check by 6.31%～27.11%.Thus,Yugoslavia hybrids had higher indirect utilization value in breeding.