Main Functions of Plant Growth Regulators 5

Answer: Plant growth regulators can regulate multiple growth links such as plant seed germination, rooting, leaf growth, flowering, fruiting and seed formation.

1) Regulate the growth and development of crops, such as promoting or inhibiting the growth of stems and leaves, promoting rooting, inhibiting bud growth, breaking or prolonging dormancy, etc.

2) Improve crop yield, such as promoting flower bud formation, flower and fruit preservation or flower and fruit thinning, and increase yield by increasing effective tillering or lodging resistance.

3) Improve the quality of agricultural products, such as forming seedless fruits, increasing amino acid or protein content, increasing sugar content, increasing fat content, etc.

4) Extend the shelf life of agricultural products, delay fruit ripening, promote fruit coloring, and prolong flowering period.

5) Other induces the production of female or male flowers, destroys stamens, enhances stress resistance, etc.

Zhengzhou Runda Chemical **** will answer for you: plant regulator is a powerful cell activator, which can quickly penetrate into the plant after contact with plants, promote the protoplasm flow of cells, and improve cell vitality. It can speed up rooting, break dormancy, promote growth and development, prevent flower and fruit fall, improve product quality, increase yield, and improve crop resistance to disease, insects, drought, waterlogging, cold, salinity, lodging and other stress resistance.

It is widely used in food crops, cash crops, vegetables, melons and fruits, fruit trees, oil crops and flowers. It can be used at any time from sowing to harvesting and can be used for seed maceration, seedbed filling, foliar spraying and flower bud spreading. Because it has the advantages of high efficiency, low toxicity, no residue, wide range of applicable crops, no high quality, and a wide range of concentrations, it has been popularized and applied in many countries and regions in the world.

Plant growth regulators include sodium nitrate and brassin.

1. Sodium renitrophenol is a powerful cell activator, with the chemical composition of sodium 5-nitroguaiacol, sodium o-nitrophenol and sodium p-nitrophenol. After contact with plants, it can quickly penetrate into the plant body, promote the protoplasm flow of cells, and improve cell vitality.

2. Brassin, also known as brassinolide, is a new type of plant endogenous hormone, which is recognized as a high-efficiency, broad-spectrum and non-toxic plant growth regulator, with strong penetration and fast absorption, and at very low concentrations, it can significantly increase the growth of plant vegetative bodies and promote fertilization. It can effectively increase the chlorophyll content, improve the efficiency of photosynthesis, promote root and seedling growth, and protect flowers and fruits; Improve the resistance of crops to cold, drought, salinity and alkali, and significantly reduce the occurrence of diseases; And it can significantly alleviate the occurrence of pesticide damage, make crops quickly resume growth, and can eliminate disease spots.

Plants

Plants are one of the main forms of life, including trees, shrubs, vines, grasses, ferns, and green algae, lichens and other familiar organisms, plants can be divided into seed plants, algae plants, bryophytes, ferns, etc.

Most of the energy of green plants is obtained from sunlight through photosynthesis, and temperature, humidity, light, and fresh water are the basic needs of plants for survival. Seed plants have six major organs: roots, stems, leaves, flowers, fruits, and seeds.

Green plants have the ability to photosynthesize - with the help of light energy and chlorophyll, under the catalytic operation of enzymes, water, inorganic salts and carbon dioxide are used for photosynthesis, releasing oxygen, absorbing carbon dioxide, and producing organic matter such as glucose for plant use.

Chlormequatin, paclobutrazol, naphthalene acetic acid, amine fresh ester DA-6, clopyruronic KT-30, ethephon, uniconazole, potassium indole butyrate, gibberellic acid GA3, calcium cyclic acid, brassinolide.

Answer: The role of plant growth regulators mainly has the following five characteristics:

1) Specific plant growth regulators, like plant hormones, act on plant cells, tissues and organs, and act by binding to the receptors of plant hormones. This is quite different from the targets of hormonal action in animals (including humans) (i.e., animal cells, tissues, organs, and animal hormone receptors), therefore, the normal use of plant growth regulators does not have a hormonal effect on humans or animals.

2) The use of trace plant growth regulators can play its due regulatory role in small amounts, and when the amount is exceeded, it has no effect or causes. For example, when the dosage of 2,4-drop is 10 20 mg kg, it can promote tomato fruit set, but when the dosage reaches 1000 mg kg, it will inhibit the growth of tomato, and even lead to leaf deformity, dry shedding, or the death of the whole plant.

3) Special plant growth regulators can sometimes exert special effects to solve some problems that are difficult to solve by other means. For example, in greenhouse fruits and vegetables, when there are no pollinator insects, the fruit setting rate of flowers is very low, so the use of plant growth regulator to point flowers can play a role in replacing insect pollination, thereby improving the fruit setting rate.

4) The scope of use of broad-spectrum plant growth regulators includes most of the plants in the planting industry, such as field crops, vegetables, fruit trees, flowers, forest trees, etc.

5) Safety Plant growth regulators only work on plants and are less toxic to higher animals (including humans). For example, more than 30 kinds of plant growth regulators are allowed to be used in China, most of which are low-drug species, only a few are poisoning, and there are no high-drug species, which are relatively safe to use; At the same time, due to the use of trace amounts, the residue level is low, and sometimes it cannot even be detected by instruments, and the impact on agricultural products and the environment is also small.

It has a wide range of functions and many application fields. Plant DU growth regulator can be applied to:

It contains all the higher and lower plants in the planting industry, such as field crops, vegetables, fruit trees, flowers, forest trees, kelp, seaweed, edible fungi, etc., and controls the growth and development of plants by regulating the regulation of physiological processes such as photosynthesis, respiration, material absorption and operation, signal transduction, stomatal opening and closing, osmotic regulation, transpiration, etc., improves the interaction between plants and the environment, enhances the stress resistance of crops, increases the yield of crops, and improves the quality of agricultural products. The expression of crop agronomic traits is developed in the direction of people's needs.

The dosage is small, the speed is fast, the benefit is high, and the residual toxicity is less, and most crops only need to be sprayed once a season according to the specified time [3].

It can regulate both the external traits and the internal physiological processes of plants.

Strong pertinence and professionalism. It can solve some problems that are difficult to solve by other means, such as forming seedless fruits, controlling strong winds, controlling plant shape, promoting cuttings rooting, fruit ripening and coloring, inhibiting axillary bud growth, and promoting cotton leaf shedding.

The effectiveness of plant growth regulators is affected by a variety of factors, and it is difficult to achieve the optimal effect. Climatic conditions, application time, dosage, application method, application site, and absorption, operation, integration and metabolism of the crop itself will all affect its effect.

Plant growth regulation compound is used to regulate plants.

The product grows and grows

A class of substances that breed du. Plant growth regulators, also known as exogenous DAO hormones, are generally produced by artificial synthesis or microbial fermentation, and their physiological and biological effects are the same or similar to those of natural plant hormones (a class of compounds naturally present in plants).

At present, plant growth regulators are widely used in agricultural and forestry production in the world, and there are more than 100 varieties that have been commercialized abroad, mainly ethephon, methylpiperanium, mequaticin, thiazuron, gibberellic acid, etc., and the application range includes vegetables, fruit trees, cotton, tobacco, rice, wheat, corn and soybean and other crops. There are 38 varieties of plant growth regulators registered for use in China, and nearly 10 varieties of ethephon and gibberellic acid are commonly used, which are mainly used in horticulture, rice, cotton and other crops. There are 7 varieties registered for use in cucumber in China, including thiazuron, chloropyriurea, nucleotide, brassinolide, sodium dinitrate, naphthalene acetic acid, indole butyric acid, etc., which are mainly used to promote the growth of female flowers and improve the fruit setting rate.

Plant growth regulators are a class of products with low toxicity and are safe if used in accordance with the use methods and precautions indicated on the national registration and approval label. The use of plant growth regulators can not only ensure the stable yield of crops and improve the quality of agricultural products, but also enhance the stress resistance of crops, so that agricultural production can save labor and time, save costs and increase efficiency.

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Plant growth regulators: chemicals that regulate the growth and development of plants.

(1) Different.

The effect of plant growth regulators is different; (2) The effect of the same plant growth regulator on different crops or different varieties is different; (3) the action period of plant growth regulators and the phenomenon of "rebound"; (4) the concentration effect of plant growth regulators; (5) the temporal effect of plant growth regulators; (6) Interaction and use of regulators.