In this article we will discuss about:- 1. History of Abscisic Acid 2. Functions of Abscisic Acid 3. Uses. History of Abscisic Acid: It is also called stress hormone because the production of hormone is stimulated by drought, water logging and other adverse environmental conditions. Abscisic acid is known as dormin as it induces dormancy in buds, underground stems and [...]
In this article we will discuss about:- 1. History of Cytokinins 2. Bioassay of Cytokinins 3. Functions 4. Uses. History of Cytokinins: They are plant growth hormones which are basic in nature, either amino purine or phenyl urea derivatives, that promote cytokinesis (= cell division) either alone or in conjunction with auxin. Skoog and co-workers found that callus from intermodal [...]
In this article we will discuss about:- 1. History of Auxins 2. Bioassay of Auxins 3. Functions 4. Uses. History of Auxins: Charles Darwin and his son Francis Darwin (1880) found that the sensation of unilateral illumination was picked up by the coleoptile tip of Canary Grass (Phalaris canarensis). A decapitated coleoptile did not receive the sensation. Coleoptile tip covered [...]