growth substance
growth substance (phytohormone; plant hormone) Any of a number of organic chemicals that are synthesized by plants and regulate growth and development. They are usually made in a particular region, such as the shoot tip, and transported to other regions, where they take effect. See
abscisic acid;
auxin;
cytokinin;
ethylene;
gibberellin.
Cite this article
Pick a style below, and copy the text for your bibliography.
|
William Henry Cavendish Bentinck Portland, 3d duke of
Book article from: The Columbia Encyclopedia, Sixth Edition
William Henry Cavendish Bentinck Portland, 3d duke of 1738-1809, British statesman...great-grandson of the 1st earl of Portland. He was lord lieutenant of Ireland...secretary (1794-1801) under William Pitt, administered them. He promoted...
|
|
William Henry Cavendish Bentinck
Book article from: The Columbia Encyclopedia, Sixth Edition
William Henry Cavendish Bentinck see Portland, William Henry Cavendish Bentinck, 3d duke of .
|