常見例句Pistils were shorter than stamens or had not pistils at all could not set fruit generally.試驗表明，雌蕊低于雄蕊或雌蕊退化的花為敗育花，而雌蕊花柱彎曲也不利于授粉及座果。Pollen has to travel from the stamens, where it is formed, to the pistils, where it is needed.花粉必須從產生花粉的雄蕊轉移到需要花粉的雌蕊上去。 返回 pistils