【摘要】 对冬小麦２８个杂交组合的８个农艺性状的杂种进行了分析，结果表明：Ｆ１各性状的杂种优势依次为单株粒重＞主穗粒重＞千粒重＞主穗粒数＞抽穗期＞主穗结实小穗数＞主穗长＞株高。亲子之间在主穗长、株高、抽穗期、千粒重、主穗结实小穗数、主穗粒重等性状上呈极显著正相关，单株粒重和主穗粒数亲子之间相关不显著。单株粒重与主穗粒重及其它性状间的相关性未达显著水平。以８７４０／淄农０２１、８０－３６／鲁麦８号，庆丰１号／８６（１８７）－３三个组合综合性状表现最好更多还原

【Abstract】 Heterosis of 8 agronomic characteristics in 28crosses in winter wheat was studied.The results were as follows:The heterosis of grain weight per plant、grain weight per mainhead、1000 kernel weight、kernels per mainhead、date of heading、fruit-bearing spikelets per mainhead、length per mainhead、plant height decreased in this order.The parent-offspring correlation of length per mainhead、plant height、date of heading、1000 kernel weight、fruit-bearing spikelets per mainhead、grain weight per mainhead were positively highly significant. The parent-offspring correlation of grain weight per plant and kernels per mainhead were not significant.Grain weight per plant was not significantly correlated with grain weight per mainhead and other characteristics.The multi-purpose traits of F 1 generation in three crosses(8740/Zinong021、80-36/Lumai 8 and Qingfeng1/86 (187)-3)among 28 crosses were best.更多还原