Plants grow vegetative organs such as roots, stems and leaves from seed germination, which is called vegetative growth. After a certain period of vegetative growth, some parts of the plant feel the changes of external conditions such as light and temperature, and are induced by some internal factors such as hormones to become flowers, and after flowering, pollination and fertilization, fruits and seeds are formed. The formation process of flowers, fruits and seeds belongs to reproductive growth. Vegetative growth and reproductive growth are two different stages of plant growth, and there is an interdependent and restrictive relationship between them. Vegetative growth is the basis of reproductive growth, and most of the nutrients needed by reproductive organs are provided by vegetative organs. Only when the roots, stems and leaves grow well and cooperate with the required external conditions can the flower bud differentiation be successfully completed and the flowers can blossom and bear fruit. However, too fast nutrient growth will also have a negative impact on reproductive growth. For example, too much water supply and fertilization will lead to too fast growth of vegetative organs, which will often delay the transformation to reproductive growth, or poor flower bud differentiation, less fruits per ear and low yield. Many plants still have vegetative growth after entering reproductive growth, and perennial plants often appear alternately in annual cycles. The transition to reproductive growth is an inevitable trend of nutritional growth. Through the formation and spread of fruits and seeds, we can reproduce, continue the population and expand the number and distribution of the population.

The transition from vegetative growth to reproductive growth is a major change in plant growth and development. This period is also a critical period of agricultural production. If the demand of wheat for water and fertilizer is met in this period, and appropriate control measures are taken, the plant can grow healthily, differentiate more healthy florets, increase the number of grains per panicle, and lay the foundation for the formation of full grains. Therefore, it is of great significance to understand the knowledge of morphogenesis of vegetative organs and grasp the laws of morphogenesis and sexual reproduction of plant reproductive organs for coordinating the two growth relationships of plants, improving crop yield and developing agricultural production.