kenneth vivian thimann

English - English

Definition of kenneth vivian thimann in English English dictionary

v. born Aug. 5, 1904, Ashford, Kent, Eng. died Jan. 15, 1997, Haverford, Pa., U.S. British-born U.S. plant physiologist. He received his Ph.D. from Imperial College in London. In 1934 he obtained and isolated pure auxin, an important plant-growth hormone and, with several coworkers, proved that auxin promotes cell elongation, formation of roots, and growth of buds, discoveries that led to the development of a widely used synthetic auxin, 2,4-D. Use of this and similar chemicals can prevent the premature falling of fruit and stimulate cut stems to grow abundant roots; because high concentrations of auxins are toxic to most plants, synthetic auxins are also effective weed killers

Related Terms

Kenneth Thimann

v. born Aug. 5, 1904, Ashford, Kent, Eng. died Jan. 15, 1997, Haverford, Pa., U.S. British-born U.S. plant physiologist. He received his Ph.D. from Imperial College in London. In 1934 he obtained and isolated pure auxin, an important plant-growth hormone and, with several coworkers, proved that auxin promotes cell elongation, formation of roots, and growth of buds, discoveries that led to the development of a widely used synthetic auxin, 2,4-D. Use of this and similar chemicals can prevent the premature falling of fruit and stimulate cut stems to grow abundant roots; because high concentrations of auxins are toxic to most plants, synthetic auxins are also effective weed killers

Hyphenation

Ken·neth Vi·vi·an thimann