花生,亦称“落花生”、“长生果”,豆科,一年生草本。 在正常情况下,花生开花受精后4～5天,花托上部出现紫色的子房柄,子房就在子房柄的顶端,顶端又尖又硬,而且有向地性。受精以后,子房柄迅速伸长,当它接触到地面时,就会钻入土中并开始结实。大约45天左右,茧状果实完全发育成熟。受精后的子房一定要在黑暗的环境中才能结果。可通过以下两个实验来证实: Peanut, also known as “groundnut”, “longevity fruit”, leguminous, annual herb. Under normal conditions, 4 to 5 days after flowering and fertilization of peanuts, purple ovary handles appear on the upper part of the receptacle, the ovary is at the top of the ovary handle, the tip is pointed and hard, and it is directional. After fertilization, the ovary stalk rapidly elongates, and when it touches the ground, it drills into the soil and begins to solidify. About 45 days or so, the fruit is fully mature. The ovary after fertilization must result in a dark environment. It can be confirmed by the following two experiments: