There is a significantly linear relation between secondary branch grain number and grain number per panicle, and they have the same changing tendency. 穗粒数与二次枝梗粒数随品种的变化是一致的,二者有极显著的线性相关。
Water stress during anthesis and kernel stage effects most greatly the thousand-grain weight and the grain number per ear,yield decreases more greatly. 花粒期阶段水分胁迫对千粒重及穗粒数影响最大,产量降幅更大。