Abstract
Philodendron plants propagated in liquid shake or bioreactor cultures proliferated profusely in the presence of paclobutrazol (PAC) and to a lesser extent in the presence of ancymidol (ANC). The growth retardants inhibited leaf development and induced the formation of bud clusters. Short transient treatments with low concentrations (1.7-3.4 μM) of the growth retardants limited leaf growth and proliferation to a lesser extent than higher concentrations (6.8-17 μM). The growth retardants had a carryover dwarfing effect in the semi-solid hardening medium, which was more pronounced at the higher concentrations or prolonged exposure periods. Regenerated plants resumed normal growth 3-6 weeks after transplanting. Treatment with growth retardants may become a useful method in the prevention of abnormal leaf growth in large-scale liquid cultures, as well as in enhancing bud proliferation.
Original language | English |
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Pages (from-to) | 53-57 |
Number of pages | 5 |
Journal | Journal of Plant Growth Regulation |
Volume | 10 |
Issue number | 1 |
DOIs | |
State | Published - Dec 1991 |