In this article we will discuss about:- 1. History of Gibberellins 2. Bioassay of Gibberellins 3. Functions 4. Uses. History of Gibberellins: The effect of gibberellins had been known in Japan since early 1800 where certain rice plants were found to suffer from bakane or bakanae (foolish seedling) disease. Such rice plants were thin, pale green, spindle shaped, longer by [...]
In this article we will discuss about:- 1. History of Ethylene 2. Functions of Ethylene 3. Uses. History of Ethylene: It is a gaseous hormone which stimulates transverse or isodiametric growth but retards the longitudinal one. Businessmen dealing with storing and shipping of fruits had known quite early that a rotten or ripe fruit could trigger early ripening of other [...]
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 [...]