E. Siyapatantakirutimana et al., EFFECT OF GIBBERELLIC-ACID ON BIOMASS AND ARTEMISININ PRODUCTION BY ARTEMISIA-ANNUA L CULTIVATED IN THE OPEN, Belgian journal of botany, 129(1), 1996, pp. 24-32
Effect of gibberellic acid on biomass and artemisinin production by Ar
temisia annua L. cultivated in the open. - The effect of gibberellic a
cid (GA(3)) treatment on biomass and artemisinin production by A. annu
a plants grown in field conditions was investigated. Height, branche n
umber and artemisinin equivalent content were studied. An increased bi
omass was observed with plants treated with 40 and 80 mg/l of GA(3), b
ut no effect on branche number was observed. The artemisinin equivalen
t content in both leaves and young buds was evaluated by an immunoassa
y procedure. The results show that the artemisinin equivalent content
is not readily correlated with the GA(3) concentrations applied. The s
trongest effect was observed with young buds of plants treated with 80
mg/l of GA(3). Hereby the artemisinin equivalent content was almost t
wice as high as the control (1.3 and 0.77% dry weight respectively).