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Mitigation of stunted root abnormality in onion (Allium cepa L.) using seed priming treatments


Tajbakhsh, M and Brown, PH and Gracie, AJ and Spurr, C and Donovan, N and Clark, RJ, Mitigation of stunted root abnormality in onion (Allium cepa L.) using seed priming treatments, Seed Science and Technology, 32, (3) pp. 683-692. ISSN 0251-0952 (2004) [Refereed Article]

DOI: doi:10.15258/sst.2004.32.3.04


A high proportion of onion seed lots produced in Tasmania, Australia have had an unacceptable percentage of abnormal seedlings in germination tests and have been commercially unacceptable or required grading before being saleable. This study investigated the effects of hydro and osmotic priming, hardening and gibberellic acid application on the incidence of the major abnormality, seedlings with stunted primary roots. All treatments were effective in reducing the incidence of abnormal seedlings compared with untreated seed. Hydro-priming halved the number of abnormal seedlings while reductions of 20% to 47% were obtained for the other treatments. Hydro-priming also resulted in significant improvement in other quality characteristics including germination percentage and rate and uniformity of germination. In addition to previously published uses, this study demonstrated that priming may have commercial application in salvaging onion seed lots with unacceptable percentages of abnormal seedlings.

Item Details

Item Type:Refereed Article
Research Division:Agricultural, Veterinary and Food Sciences
Research Group:Horticultural production
Research Field:Horticultural crop growth and development
Objective Division:Plant Production and Plant Primary Products
Objective Group:Horticultural crops
Objective Field:Horticultural crops not elsewhere classified
UTAS Author:Brown, PH (Professor Phil Brown)
UTAS Author:Gracie, AJ (Associate Professor Alistair Gracie)
UTAS Author:Spurr, C (Dr Cameron Spurr)
UTAS Author:Donovan, N (Miss Nadine Donovan)
UTAS Author:Clark, RJ (Professor Robert Clark)
ID Code:24437
Year Published:2004
Web of Science® Times Cited:5
Deposited By:Agricultural Science
Deposited On:2004-08-01
Last Modified:2005-06-10

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