小麦杂交组合早代筛选之回归曲线图比产法

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。此法也适用于系谱法的株行比产及其他小样本比产

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

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.