冬小麦产量性状的遗传效应分析

以农大139等7个冬小麦品种进行4×3不完全双列杂交，采用加性-显性及其与环境互作的遗传模型对亲本、F_1和F_2的株高、主穗穗长、单株穗数、主穗小穗数、千粒重和单株粒重6个性状进行遗传分析．结果表明，株高和主穗长主要受加性效应控制，而单株穗数、主穗小穗数、千粒重和单株粒重主要受显性×环境互作效应影响．矮2杂交后代易选到矮株，奥里生杂交后代易得到大穗材料，农林10号和奥里生的杂交后代分蘖力将加强，814的杂交后代小穗数增多，814杂交后代千粒重增高．所有产量性状未表现明显的杂种优势．

Analysis of Genetic Effects for Yield Traits in Winter Wheat

Analysis of genetic Effects for yieldtraits such as plant height,main spike length,spike number,spikelet number of main spike,grain weight per plant and 1000-grain weight was conducted with parents,F_1 and F_2 of 7 wheat varieties by sing additive-dominance(AD)model.The results indicate that(1)plant height and main spike length are mainly controlled by additive effect,while spike number,spikelet number of main spike,grain weight per plant and 1000-grain weight are mainly controlled by dominant and environment effect interaction;(2)more dwarf plants can be selected from crosses with parent Ai-1,more plants with longer spike from crosses with Aolisin,more plants with more spike number from crosses with Nonglin-10 and Aolisin,more plants with more spikelet number from crosses with 814 and ore plants with higher 1000-grain weight from crosses with 14:(3)the heterosis is not evident for all of the yield traits.