甘薯开花规律的观察

Studies on Bloom law in sweetpotato (Ipomoea batatas (L.)lam.)

对甘薯的开花规律作了观察．结果表明，一个植株的花序有30－75个，开花顺序有先后．在一个植株上，花是从下而上开放的；在一个花序上，花由内向外开放，它的开花情况符合两种模式图．从每一个植株纵向开花来看，花是从下而上呈螺旋报开放．

The bloom law of sweetpotato is observed. One plant has 30 ~ 75 inflorescences and bloom onier.Bloom has two models. One is from bottom to top for a vine and the other is from inside to outside for a inflorescence.