Varieties that do not produce fertile pollen are used as females.
不产生可育花粉的品种被用作母体。
Even under SD conditions, fertile pollen rate of TGMSR was rather low.
在较适宜条件下，这些TGMSR的可育花粉率同样不高。
Polynomial regression analysis indicated that the reaction of fertile pollen rates to tetcyclacis concentrations and dates showed a quadratic relationship.
多项式回归分析表明，花粉可育率对特效烯浓度和播期的反应是二元二次方程。
Polynomial regression analysis indicated that the reaction of fertile pollen rates to tetcyclacis concentrations and dates showed a quadratic relationship.
多项式回归分析表明，花粉可育率对特效烯浓度和播期的反应是二元二次方程。
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