Abscisic acid treatment has inconsistent effects on the water relations and longevity of cut Acacia holosericea foliage

Ahmad, Iftikhar and Joyce, Daryl C. (2011) Abscisic acid treatment has inconsistent effects on the water relations and longevity of cut Acacia holosericea foliage. Journal of Horticultural Science and Biotechnology, 86 2: 107-112.

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Author Ahmad, Iftikhar
Joyce, Daryl C.
Title Abscisic acid treatment has inconsistent effects on the water relations and longevity of cut Acacia holosericea foliage
Formatted title Abscisic acid treatment has inconsistent effects on the water relations and longevity of cut Acacia holosericea foliage
Journal name Journal of Horticultural Science and Biotechnology   Check publisher's open access policy
ISSN 1462-0316
0022-1589
Publication date 2011-03
Sub-type Article (original research)
Volume 86
Issue 2
Start page 107
End page 112
Total pages 6
Editor T. M. A. Wilson
Place of publication Ashford, Kent, U.K.
Publisher Headley Brothers
Collection year 2012
Language eng
Formatted abstract Post-harvest application of abscisic acid (ABA) can induce stomatal closure in the leaves of cut flower and foliage crops. This effect may be helpful in reducing water deficit stress. Acacia holosericea, a novel cut-foliage line with a short vase-life, was subjected to ABA treatments applied by dipping, pulsing, or in-vase solution, with a view to improving its water balance and extending its longevity. In the first of four experiments, cut single Acacia phyllodes (leaves) were dipped into 0.1, 1.0, or 10.0 mg l-1 ABA for 60 s. In the second experiment, phyllodes were pulsed with these same ABA concentrations for 24 h at 20° ± 2°C. In the third experiment, ABA, at the same concentrations, was supplied to phyllodes as a vase solution. In the fourth experiment, cut Acacia whole stems were either dipped in 0.1 mg l-1 ABA solution, pulsed in 0.1 or 1.0 mg l-1 ABA, or stood in 0.01 or 0.10 mg l-1 ABA as vase solutions. Certain ABA dipping and pulsing treatments extended the vase-life of cut phyllodes by up to approx. 1.8-fold and 1.5-fold, respectively. Moreover, the application of ABA as a pulse or vase solution could reduce the uptake of vase solution by cut phyllodes, suggesting the induction of stomatal closure. Lower concentration ABA dip (1.0 mg l-1) and pulse (0.1 mg l-1) treatments extended the longevity of phyllodes, but high ABA dip and pulse concentrations (10.0 mg l-1) were ineffective.ABA in the vase solution at 0.01 mg l-1 extended the vase-life of cut stems, but did not reduce the uptake of vase solution. Overall, despite some vase-life and water balance benefits, post-harvest ABA treatments were not of value for cut A. holosericea foliage stems because of their inconsistent effects.
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2012 Collection
School of Agriculture and Food Sciences
 
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Created: Tue, 15 Mar 2011, 15:12:43 EST by Daryl Joyce on behalf of School of Land, Crop and Food Sciences