The present work was focused on abscisic acid (ABA) changes in three differently coloured petunias during flower development and senescence. The ABA content was studied in correlation with changes of flower pigments and other phytohormones. The variations of anthocyanins and endogenous hormones were induced by treatments with 1 or 2 mM amino-oxyacetic acid (AOA), 50, 100 mu M thidiazuron (TDZ) and 50 mu M 6-benzyladenine (BA). ABA content decreased during bud development and increased during senescence. The AOA reduced the anthocyanins content and avoided ABA increase, while the cytokinins (BA and TDZ) did not significantly affected anthocyanin contents but increased ABA content. TDZ doubled the ABA content compared to the control. However, the treatments did not affected flower life, confirming the secondary role of ABA during flower senescence.
|Titolo:||Changes in abscisic acid and flower pigments during floral senescence of petunia|
FERRANTE, ANTONIO (Primo)
|Parole Chiave:||Amino-oxyacetic acid; Anthocyanins; Benzyladenine; Carotenoids; Cytokinins; Petunia x hybrida; Thidiazuron|
|Settore Scientifico Disciplinare:||Settore AGR/04 - Orticoltura e Floricoltura|
|Data di pubblicazione:||2006|
|Digital Object Identifier (DOI):||10.1007/s10535-006-0091-4|
|Appare nelle tipologie:||01 - Articolo su periodico|