ISSN:
1432-203X
Schlagwort(e):
Keywords Auxin
;
Indole-3-acetic acid
;
Indole-3-butyric acid
;
Polarity
;
Competence
;
Abbreviations BA: Benzyladenine
;
DTR: Difficult-to-root
;
ETR: Easy-to-root
;
IAA: Indole-3-acetic acid
;
IBA: Indole-3-butyric acid
;
LS: Linsmaier and Skoog (l962)
;
PAT: Polar auxin transport
;
PGRF: Plant growth regulator-free
Quelle:
Springer Online Journal Archives 1860-2000
Thema:
Biologie
Notizen:
Abstract Differences in rhizogenesis between easy-to-root Forsythia×intermedia Zab. cv. Lynwood and difficult-to-root Syringa vulgaris L. cv. Madame Lemoine were measured in an experimental system based upon internodal stem sections excised from axillary shoot cultures. Root induction in Syringa was distinctly polar, responding best to distal application of indole-3-butyric acid (IBA), whereas Forsythia was equally responsive to IBA applied at either end. Root initiation in Syringa declined rapidly from 73% to 32% over 48 h when the application of a 24-h pulse of IBA was delayed following excision of the internode; in Forsythia a smaller decline (93–70%) occurred over 144 h. Forsythia internodes were the more responsive, and developed roots after distal or proximal application of 3 μM IBA, whereas Syringa required the distal application of 30 μM IBA.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1007/s002990000264
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