Boron is one of the essential trace elements of crops, which plays a variety of roles in the process of plant growth and development, and plays an irreplaceable role in pollination and fertilization, fruit fruiting and seed production. It can be said that boron is the switch that opens the flowering and fruit of plants. But do you know why boric acid can promote fruit setting? Today Xiaobian will share with you.
Boric acid (H3BO3) is an inorganic compound boron chemical raw material, containing about 17% boron, also often referred to as “17 boron”, it can promote fruit setting, its main mechanism of action has the following three aspects:
I. Promote cell elongation and tissue differentiation.
During root growth, boron inhibits the activity of growth hormone (indoleacetic acid) oxidase, which stimulates the longitudinal growth of cells in the stem, and makes the cell wall loose and less tight, which can make the plant cells continue to grow wildly. This auxin is only formed in vascular plants, and it is also involved in the differentiation of xylem ducts in plants. If boron is deficient, the woody part will be weakened, prone to layer cell proliferation, root necrosis, affecting the normal delivery of nutrients, so the demand for boron is also limited to vascular plants.
Second, promote pollen germination and pollen tube growth
Some crops “flower and not fruity” is caused by boron deficiency, so that the anther wall of the crop is destroyed and lose the ability to bounce. Appropriate boron supplement can strengthen the anther tension and make the pollen ejection more fully, which can accelerate the development of flower organs, increase the number of pollen, promote the germination of pollen grains and the growth of pollen tubes, and thus improve the fruit setting rate.
Promote the transport of carbohydrates and protein metabolism
Boron can enhance photosynthesis in crops and promote the formation of carbohydrates. When the crop boron is insufficient, it will cause a large accumulation of carbohydrates such as sugar and starch in the leaves and cannot be transported