So, though the aphid has much favorite to hybrid wheat varieties and antibiosis of the wheat varieties on aphid is weak, but they have very good tolerance, so they get higher yield.

• 杂种小麦对蚜虫的抗生性虽较弱，但耐害性极强，从而以强耐害性获得高产。若在育种中加强抗生性指标和不选择性指标的选择，杂种小麦的产量可能还会上一个台阶。