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General Information

Document type
  • Peer-reviewed journal article
GE organism
  • potato
GE trait
  • insect resistance
Country
  • USA
  • South Africa
  • Canada

Results

Efficacy
  • positive effect
Equivalence
  • no effect

Field and Storage Evaluations of ‘SpuntaG2’ for Resistance to Potato Tuber Moth and Agronomic Performance Open Access

Douches, D; Pett, W; Visser, D; Coombs, J; Zarka, K; Felcher, K; Bothma, G; Brink, J; Koch, M; Quemada, H
Journal of the American Society for Horticultural Science. 2010 135(4):333-340

Link to full text (open access, freely available)

ISSN: 2327-9788

Abstract

‘SpuntaG2’ is a transgenic potato (Solanum tuberosum) cultivar that contains the cry1Ia1 gene for resistance to potato tuber moth (Phthorimaea operculella), which is a serious pest of potato in many parts of the world. Previous studies have characterized ‘SpuntaG2’ at the molecular level and evaluated it for safety as a human food source. The objective here was to determine the efficacy of ‘SpuntaG2’ against the potato tuber moth in the field and in storage and to evaluate its agronomic performance. Efficacy trials at seven South African locations over 5 years indicated that ‘SpuntaG2’ gave complete control of potato tuber moth in the field and storage. The agronomic performance (tuber size and yield) of ‘SpuntaG2’ was not statistically different from ‘Spunta’ or was better than ‘Spunta’ at all locations/years with two exceptions. Three years of trials in Michigan further support these conclusions. Evaluations done during the 2006–07 South African season showed that ‘SpuntaG2’ did not differ from non-transgenic ‘Spunta’ for the following traits: maturity, growth habit, eye morphology, tuber size distribution, tuber shape, skin and flesh color, growth cracks, internal defects, specific gravity, chip color, cooking quality, disease resistance, and pollen fertility. Based on the results of these trials, it was concluded that ‘SpuntaG2’ provides the agronomic performance of ‘Spunta’ with the added benefit of resistance to potato tuber moth.

Keywords

South Africa, quality, Bacillus thuringiensis, Phthorimaea operculella, transgenic, cry1Ia1 gene, deregulation

Funding

Funding source
  • Not reported
Funding country
  • Not reported
Funding type
  • Not reported

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Cite this study

MLA

Douches, D, W Pett, D Visser, J Coombs, K Zarka, K Felcher, G Bothma, J Brink, M Koch, H Quemada. "Field and Storage Evaluations of ‘SpuntaG2’ for Resistance to Potato Tuber Moth and Agronomic Performance." Journal of the American Society for Horticultural Science 135.4 (2010): 333-340. Web. 25 Sep. 2017.

APA

Douches, D., Pett, W., Visser, D., Coombs, J., Zarka, K., Felcher, K., Bothma, G., Brink, J., Koch, M., & Quemada, H. (2010). Field and Storage Evaluations of ‘SpuntaG2’ for Resistance to Potato Tuber Moth and Agronomic Performance. Journal of the American Society for Horticultural Science, 135(4), 333-340.

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