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花生的果实结于地下,这是众所周知的事。但是,花生怎样将果实长入地下的,在一般的植物学教科书中很少提到,即使提到也十分简单:“受精后子房柄迅速伸长,向地面弯曲,使子房插入土中膨大形成荚果。”教学中我们常遇到一些农村的中学教师,他们在观察了花生开花结实这一过程后,反而对教材上的这种解释产生了疑问,甚至有的教师认为,花生不是从花中长出的,而是从花下的茎上长出来的。
It is a well-known fact that the peanut’s fruit ends underground. But how peanuts grow the fruit underground is seldom mentioned in the general textbook of botany, even if it is mentioned: “After fertilization the subtrochantem rapidly expands and bends toward the ground, allowing the ovary to be inserted into the soil Expand the formation of pods. ”In teaching we often encounter some rural middle school teachers who observe the process of flowering and fruiting peanuts, but on the interpretation of the textbooks have questions, and even some teachers think that peanut is not from It grows out of the flower, but from the stem of the flower.