During a flight, the bee usually visits several male and several female flowers. In this way, flowers are able to reproduce.

在飞行过程中，蜜蜂经常会在多个雄花和多个雌花上停留。就是这样，花朵能够授粉。

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The differences of the nectar volume and bee pollination between two different types of male sterile line that were transferred by inbred line 02-12 were studied.

本文以结球甘蓝自交系02 - 12为父本转育成功的两个不同类型雄性不育系为试材，对其花蜜量及蜜蜂授粉差异进行了研究。

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