1.关於高等植物个体发生或个体发育的学说总共只有半世纪的历史,但是其特点就是极为蓬勃地向前推进着和显示着很多卓越的成就及发现。其中包括确定了植物个体发生的节奏和外界环境条件与外界作用条件改变的规律之间的依赖性,阐明了温度因素在植物发育中的作用,发现了光周期,了解异性器官在形态和生理变化的规律性,发现植物激素,阐明激素,维生素以及其他生理活动性物质的生理作用。与了解具有重要意义的新事实有关也出现了相当的理论概括——碳水化合物—含氮物质的理论,关於多年生植物发育的连续时期理论,关於冬性及春性植物的阶段发育概念,关於年龄变化的概念,生长和向性的激素理论,关於植物发育和其他过程的激素概念。在无可非议地估价 1. The doctrine of the occurrence or development of an individual plant in higher plants has a history of only half a century in total, but its features are extremely prosperous and show many remarkable achievements and discoveries. These include the determination of the dependence of plant rhythms and environmental conditions on the behavior of the outside world, the role of temperature in plant development, the discovery of the photoperiod and the understanding of the morphological and physiological changes in heterosexual organs The regularity and discovery of plant hormones, clarify the physiological role of hormones, vitamins and other physiologically active substances. A considerable theoretical summary has emerged in connection with the understanding of new and important facts - the theory of carbohydrates - nitrogenous substances, the theory of successive stages of perennial development, the concept of phase development in winter and spring plants, the concept of age The concept of change, the hormone theory of growth and tropism, the concept of hormones on plant development and other processes. Appraised without question