小麦杂交组合早代筛选之回归曲线图比产法

The Method of Yield Comparison by the Curvilinear Regression for the Early generation Material of Hybrid Wheat Combination

在小麦育种中 ,对 F2 各组合混合群体或株行进行比产 ,选出拔尖的高产组合 ,余者淘汰 ,可大大减少包袱 ,提高效率和后代高产品系出现的概率。由于 F2 各组合种植数量和密度不同 ,不宜直接比产 ,可根据小麦产量与密度的曲线回归关系 ,在坐标系中标出各行坐标点 ,绘出总体回归曲线 ,在曲线的上方竖直方向上距曲线愈远的点产量愈高 ,这样就可间接直观地进行逐行比产 ,选出娇娇者来。

It is very important to keep good materials and eliminate the undescrible materials during the producedure of F 2 selection with the method of yield comparison by Curvilinear Regression.The relationship of curvilinear regression of wheat yield and planting density,which can form a graph of different populations.Yield from F 2 material may indirectly and visually show the yield levels.