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对小麦杂种后代进行了约束选择,以无约束选择、单项选择为对照。试验结果表明:约束选择对选择性状的促进和约束性状的控制都有较好的效果。一对正相关的性状被约束者可保持在原平均数稍高水平;负相关的约束者则保持在原平均数略低水平。在对产量的选择中,约束选择的实际效果一般比无约束的为好,其中以约束株高选择产量的效果最佳。最后对约束选择的应用问题作了讨论。
The wheat hybrid progeny were constrained to choose, with no choice, single choice as a control. The experimental results show that constrained selection has good effect on the promotion of selective traits and the control of restrained traits. A pair of positive correlation traits may be restrained to maintain a slightly higher level of the original average; negatively related restraints remain at a slightly lower level of the original average. In the choice of yield, the actual effect of constrained selection is generally better than that without restraint, among which the effect of constraining plant height is the best. Finally, the application of constraint selection is discussed.