Plant Breeding (2015) 134, 529-534

Thomas Miedaner, Sen Han, Bettina Kessel, Milena Ouzunova, Tobias Schrag, Friedrich H. Utz and Albrecht E. Melchinger (2015)
Prediction of deoxynivalenol and zearalenone concentrations in Fusarium graminearum inoculated backcross populations of maize by symptom rating and near-infrared spectroscopy
Plant Breeding 134 (5), 529-534
Abstract: Gibberella ear rot (GER) caused by Fusarium graminearum is a destructive disease in maize of temperate regions resulting in yield reduction and contamination by the mycotoxins deoxynivalenol (DON) and zearalenone (ZON). We wanted to analyse whether prediction of DON and ZON concentrations is feasible either by GER severity ratings or by near-infrared spectroscopy (NIRS). We analysed 80 and 102 lines developed by backcrossing doubled-haploid lines from segregating populations to the resistant and susceptible parent, respectively, by artificial infection at three locations in Germany and France. Both backcross (BC) populations differed substantially in their means for all traits with significant (P < 0.01) genotypic variances. DON and ZON concentrations measured by immunotests were significantly (P < 0.01) correlated with each other and with GER severity within each BC population (0.6 < r < 0.9, P < 0.01). DON concentration measured by immunotest and NIRS significantly correlated (r ~ 0.9, P < 0.01). In conclusion, DON and ZON concentrations could be reliably predicted by GER severity. Additional NIRS analysis of DON concentration might be useful for the positively selected fraction.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Link to article at publishers website
Database assignments for author(s): Albrecht E. Melchinger

Research topic(s) for pests/diseases/weeds:
general biology - morphology - evolution
resistance/tolerance/defence of host

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Fusarium graminearum	Maize/corn (Zea mays)	France
	Fusarium graminearum	Maize/corn (Zea mays)	Germany