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Ginger (Zingiber officinale) autotetraploids with improved processing quality produced by an in vitro colchicine treatment

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Smith, M. K., Hamill, S. D., Gogel, B.J. and Severn-Ellis, A.A. (2004) Ginger (Zingiber officinale) autotetraploids with improved processing quality produced by an in vitro colchicine treatment. Australian Journal of Experimental Agriculture, 44 (10). pp. 1065-1072.


Article Link: http://dx.doi.org/10.1071/EA03204

Publisher URL: http://www.publish.csiro.au


Ginger autotetraploids were produced by immersing shoot tips in a 0.5% w/v colchicine, 2% v/v dimethyl sulfoxide solution for 2 h. Stomatal measurements were used as an early indicator of ploidy differences in culture with mean stomata length of tetraploids (49.2 μm) being significantly larger than the diploid (38.8 µm). Of the 500 shoot tips treated, 2% were characterised as stable autotetraploid lines following field evaluation over several seasons.

Results were confirmed with flow cytometry and, of the 7 lines evaluated for distinctness and uniformity, 6 were solid tetraploid mutants and 1 was a periclinal chimera. Significant differences were noted between individual tetraploid lines in terms of shoot length, leaf length, leaf width, size of rhizome sections (knob weight) and fibre content. The solid autotetraploid lines had significantly wider, greener leaves than the diploids, they had significantly fewer but thicker shoots and, although ‘Queensland’ (the diploid parent from which the tetraploids were derived) had a greater total rhizome mass at harvest, its knob size was significantly smaller. From the autotetraploid lines, one line was selected for commercial release as ‘Buderim Gold’. It compared the most favourably with ‘Queensland’ in terms of the aroma/flavour profile and fibre content at early harvest, and had consistently good rhizome yield. More importantly it produced large rhizome sections, resulting in a higher recovery of premium grade confectionery ginger and a more attractive fresh market product.

Item Type:Article
Business groups:Horticulture and Forestry Science
Additional Information:Reproduced with permission from © CSIRO Publishing. Access to published version may be available via Publisher’s website.
Keywords:Ginger; colchicine treatment; autotetraploids; rhizome characteristics.
Subjects:Plant culture > Propagation
Plant culture > Field crops > Other field crops
Science > Botany > Plant physiology
Live Archive:10 Mar 2005
Last Modified:17 Feb 2023 04:31

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