双低杂交油菜油研7号杂种优势的研究  

A Study on Heterosis of Double-Low Oll Rape You Yan No. 7

作　　者：杜才富[1] 侯国佐[1] 朱文秀[1] 胡腾文[1] 陈芝能[1] 田世刚[1] 

机构地区：[1]贵州省油料科学研究所,思南565109

出　　处：《种子》1998年第5期13-16,共4页Seed

摘　　要：双低杂交油菜油研7号杂种优势研究采用四种优势指标分析，结果表明：父本不同株系所配制的组合优势不尽一致，在11个性状中，产量、主花序有效角、千粒重、角长均有较强的优势；单株有效角、角粒数为负优势，杂种的分枝部位升高，这。个性状与三系杂种优势研究结果相反；通过选择新父本，有可能得到优势更强的新组合。油研7号在长江流域各省试验示范，表现出一定的增产潜力，且适宜棉油、稻油两熟和稻稻油三熟制种植，是双低油菜生产较理想的推广品种。The study on heterosis of Double-low rape You Yan No. 7 is by means of four dominent index analysis. Theresu1t indicated the heterosis is different, the yield, primary flower head, effective pod, 1000 kernelweight and podlength have stronger dominance in the seven traits. The effective pods of sing1e plant and Number of pods are neg-tive dominance. When the positin of branches are risen, the three traits are contrary to experimental results ofternary heterosis. Through new father plant selection will enable to gain stronger dominant combination. So thatthe You Yan No. 7 is an ideal variety of Double-low rape, especially it has a better performance in the variousprovinces of Yangtse river valley and is favourable to two cropping of cotton and rape, rice and rape and three crop-ping of rice and rape.

关 键 词：杂交油菜 油研7号 优势指标 油菜 

分 类 号：S565.403[农业科学—作物学]