What are the 2 main plant hormones?

What are the 2 main plant hormones?

Cytokinins and auxins often work together, and the ratios of these two groups of plant hormones affect most major growth periods during a plant's lifetime. Cytokinins counter the apical dominance induced by auxins; in conjunction with ethylene, they promote abscission of leaves, flower parts, and fruits.

What are the 2 plant hormones?

The five major phytohormones are – auxins, gibberellins, cytokinins, ethylene and abscisic acid. There are also other phytohormones that affect the plant's physiological processes like brassinosteroids, salicylates, jasmonates, strigolactones, etc.May 20, 2022

What is plant hormone give two example?

Some examples of plant hormones are Indole (auxins), terpenes (Gibberellins), adenine (Cytokinins), carotenoids (Abscisic acid), and gases (Ethylene).

What are the hormones of plants?

Plant hormones regulate plant growth, development, reproductive processes, longevity, and death. Six main types: Auxins, abscisic acid, cytokinins, ethylene gibberellin, and brassinosteroids.

What is the main hormone in plants?

Auxins function primarily in stem elongation by promoting cell growth. Indole-3-acetic acid (IAA) is the major naturally occurring auxin and one of the major growth factors in plants. They were the first group of plant growth hormones discovered. Auxins serve dual roles in plants depending on where they are produced.

What are the two hormones that regulate plant growth?

Chemical Structures of the Plant Hormones

Ethylene gas promotes fruit ripening, senescence, and responses to pathogens and abiotic stresses. IAA (an auxin) regulates cell division and expansion, vascular differentiation, lateral root development, and apical dominance.Sep 14, 2004

What are the hormones that regulate plant growth?

Auxin and cytokinin are critical growth hormones in plant development and are naturally present within the plant at variable concentrations throughout the season.May 20, 2005

What are the two types of plant growth regulators?

They profoundly control and modify the physiological processes like the growth, development, and movement of plants. Based on their actions, plant growth regulators are broadly classified into two major groups: Plant growth promoters. Plant growth inhibitors.