Download PDF
Planta Med 1995; 61(2): 167-170
DOI: 10.1055/s-2006-958040
Papers

© Georg Thieme Verlag Stuttgart · New York

Developmental Studies of Artemisia annua: Flowering and Artemisinin Production Under Greenhouse and Field Conditions

Jorge F. S. Ferreira, James E. Simon, Jules Janick
  • Purdue University, Center for New Crops and Plant Products, Horticulture Department, 1165 Horticulture Building, West Lafayette, IN 47907-1165, U.S.A.
Further Information

Publication History

1994

1994

Publication Date:
04 January 2007 (online)

Also available at
  PDF Download  Permissions and Reprints

Abstract

Cuttings of a clone of A. annua L. (Asteraceae), grown under 16 h photoperiod for 55 days were transferred to six photoperiod treatments in the greenhouse. Under short photoperiods (8, 10, or 12 h), plants flowered after two weeks; plants under long photoperiods (16, 20, or 24 h) remained vegetative until termination of treatment after 10 weeks. When plants grown under long photoperiod treatments were transferred to 8-h photoperiod, flowering occurred 2 weeks later. Flower induction in plants grown under field conditions occurred when the photoperiod was determined to the 13.3 h. Artemisinin levels in all studies were found to be highest at anthesis. Artemisinin content was 4- to 11-fold higher in inflorescences than in leaves.

Key words

Artemisia annua - Asteraceae - photoperiod - flowering - development - artemisinin