S-Abscisic Acid (ABA) is a plant hormone. S-Abscisic Acid is a natural plant growth regulator that can promote coordinated plant growth, improve plant growth quality, and promote plant leaf shedding. In agricultural production, Abscisic Acid is mainly used to activate the plant's own resistance or adaptation mechanism to adversity, such as improving the plant's drought resistance, cold resistance, disease resistance, and salt-alkali resistance.

4-Chlorophenoxyacetic acid (4-CPA) is a phenolic plant growth regulator. 4-Chlorophenoxyacetic acid (4-CPA) can be absorbed by the roots, stems, leaves, flowers, and fruits of plants. Its biological activity lasts for a long time. Its physiological effects are similar to endogenous hormones, stimulating cell division and tissue differentiation, stimulating ovary expansion, inducing parthenocarpy, forming seedless fruits, and promoting fruit setting and fruit expansion.

14-Hydroxylated brassinolide,28-homobrassinolide,28-epihomobrassinolide,24-epibrassinolide,22,23,24-trisepibrassinolide

As a plant growth regulator, Brassinolide has received widespread attention and love from farmers. There are 5 different types of Brassinolide commonly found on the market, which have common characteristics but also some differences. Because different types of Brassinolide have different effects on plant growth. This article will introduce the specific situation of these 5 types of Brassinolide and focus on analyzing their differences.