玉米种子的胚根具有对外界环境条件反应敏感的生物学特性，当含水量大，遇到低温、冻害等不良环境条件时，很容易丧失生活能力。为了解决这一问题，曾对玉米单交种进行多次切胚试验，按照切面的不同颜色和特征，分类置床发芽，鉴定不同类型的种子有无生活力和生活力的强弱... The radicle of corn seed has biological characteristics that are sensitive to the external environmental conditions. When the water content is large, it encounters low temperature, frost damage and other adverse environmental conditions, it is easy to lose their living ability. In order to solve this problem, corn cuttings have been repeatedly cut embryos, according to the different colors and characteristics of cuttings, bed set germination, identification of different types of seeds with or without vitality and vitality ...