玉米4类种质杂种优势利用模式  

Study on Heterosis Models of Four Germplasm Populations of Corn

作　　者：刘祥[1] 李凤艳[1] 彭泽斌[2] 刘新芝[2] 张兴华[1] 韦继兴[1] 

机构地区：[1]西北农林科技大学农学院玉米研究所,陕西杨陵712100 [2]中国农业科学院,北京100081

出　　处：《西北农业学报》2000年第3期102-105,共4页Acta Agriculturae Boreali-occidentalis Sinica

摘　　要：以唐四平头系统、Lancaster系统、Reid系统和旅大红骨系统的代表性自交系为材料 ,完全双列杂交 ,分析各杂交模式的杂种优势和配合力。结果表明 :系统间杂交后代的产量等主要性状杂种优势和特殊配合力普遍高于系统内杂交后代 ;不同杂交模式的超亲优势和特殊配合力均因性状不同而有所差异 ,单株粒重的超亲优势以 L× R、唐× L、唐× R较高 ,单株粒重特殊配合力以 L× R、唐× R。The heterosis and combining ability of the heterosis models were studied with the representative inbred lines of Tangsipingtou population, Lancaster population,Reid population and Ludahonggu population by complete diallell crosses. The results showed that the specific combining ability and heterosis of main yield characters of crossbreed between populations were higher than that of crossbreed in population. The specific combining ability effects and heterosis of heterosis models were difference in characters as followings, and the heterosis of L×R,Tang×L,Tang×R were high on grain weight of plant, and specific combining ability effects of L×R,Tang×R,Tang×Lu were high on grain weight of plant.

关 键 词：玉米 杂种优势 杂交模式 配合力 陕西 

分 类 号：S513[农业科学—作物学]