[Effect of different plant growth regulators on yield and quality of Angelica dahurica var. formosana development].
OBJECTIVE
To investigate the effect of plant growth regulators on the growth and quality of Angelica dahurica var. formosana.


METHODS
Five plant growth regulators: chlormequat chloride (CCC), Mepiquat chloride (PIX), Gibberellic acid (GA3), Paclobutrazol (PP333) and Maleic Hydrazide (MH) were sprayed in rosette stage, the effects of these plant growth regulators (PGRs) on the growth, yield and quality of A. dahurica var. formosanaw were observed. The biological traits were first measured and then imperatorin and isoimperatorin contents in roots were determined by HPLC.


RESULTS
Low concentration GA3 increased the yield while not influenced the premature bolting rate and the coumarin content.


CONCLUSIONS
Spraying of GA3 (30 mg x L(-1)) could guarantee the growth and development of A. dahurica var. formosana to have a higher yield and maintain the active ingredients content in the root as well.
Agronomy College, Sichuan Agricultural University, Wenjiang 611130, China.
Kai
K
Hou
Jun-Wen
JW
Chen
Juan-Yuan
JY
Zhai
Hao
H
Shen
Li
L
Chen
Wei
W
Wu
D029969:Angelica / Q000187:drug effects / Q000254:growth & development*; D002716:Chlormequat / Q000494:pharmacology; D005875:Gibberellins / Q000494:pharmacology; D008300:Maleic Hydrazide / Q000494:pharmacology; D010880:Piperidines / Q000494:pharmacology; D010937:Plant Growth Regulators / Q000494:pharmacology*; D014230:Triazoles / Q000494:pharmacology
D005875:Gibberellins; D010880:Piperidines; D010937:Plant Growth Regulators; D014230:Triazoles; C053370:paclobutrazol; D002716:Chlormequat; C007842:gibberellic acid; C049449:mepiquat; D008300:Maleic Hydrazide