|1, promote pollen grain germination and pollen tube growth|
Boron can accelerate the development of flower organs, stimulate the germination of pollen grains, increase the number of pollen, especially in the promotion of pollen tube elongation of the effect is obvious, so boron is conducive to flowering and fruiting, can improve the emergence of rape “flower but not fruiting”, wheat “ear but not fruiting”, cotton “bud but not flowering”, peanut “fruit but not kernel” and fruit trees such as boron deficiency symptoms.
2, promote root growth and development
Boron can make meristem such as root tip and stem growing point grow normally and promote root development. Boron also forms peroxides with alcohols, sugars, and other compounds to improve oxygen supply to plant roots.
3, enhance crop drought resistance, disease resistance
Boron has a role in controlling water in crops, can improve the viscosity of sunflower, buckwheat and other crop protoplasm, enhance the ability of colloids to bind water, and improve the drought resistance of crops. Boron also promotes the formation of vitamin C,
And vitamin C can enhance the resistance of crops, improve the resistance of crops, reduce the incidence of beet “heart rot”, broccoli, radish “brown rot”, celery “broken stem disease”, radish hollow, sweet potato “brown spot” and other diseases.
4, promote cell wall formation and sugar transport
Together, boron and calcium act as “intercellular adhesives”, so they promote the formation of cell walls. 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, which can not be transported to the seeds and other parts, thus affecting the crop yield.
5, involved in cell elongation and tissue differentiation
There is an obvious interaction between auxin and boron. Boron inhibits the activity of indoleacetic acid oxidase, increases the content of indoleacetic acid, stimulates the normal elongation of roots, promotes the normal differentiation of xylem ducts, and reduces the symptoms of xylem degradation and cambium cell proliferation caused by boron deficiency.