THE ROLE OF AUXIN AND CYTOKININS IN PEA AXILLARY BUD GROWTH AFTER BREAKING OF APICAL DOMINANCE

Result code in IS VaVaI
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Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
THE ROLE OF AUXIN AND CYTOKININS IN PEA AXILLARY BUD GROWTH AFTER BREAKING OF APICAL DOMINANCE
Original language description
In buds from the 2nd primary scales of decapitated pea plants the increase of the IAA level already 2 hrs and increase of cytokinin (CK) levels 6 hrs after decapitation was recorded. It is well known that auxin is the main factor of cell expansion and cytokinins are activators of cell division. The beginning of bud growth was recorded 2 hrs after their release from apical dominance, and was accompanied with cell elongation, whereas cell division begins after 6 hrs and reaches the maximum after about 18hrs (Devitt, Stafstrom, 1995). Generally, the roots are considered the source of cytokinins, but it has been speculated that the CKs could be synthesised also in the buds. Therefore, isolated pea buds cultivated on MS medium without growth regulators were used. Similarly as in decapitated plants, transient IAA peak at 2 hrs and then an increase of cytokinins in buds was observed. Thereby, de novo biosynthesis of cytokinins in the isolated buds was proven.
Czech name
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Czech description
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Publication year
2001
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
17th International Conference on Plant Growth Substances
ISBN
80-7157-518-6
ISSN
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e-ISSN
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Number of pages
1
Pages from-to
78-78
Publisher name
Neuveden
Place of publication
Brno, Czech Republic
Event location
Brno, Czech Republic
Event date
Jul 1, 2001
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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