Resistance to Fusarium infection in oats (Avena sativa L.)
This paper summarizes the impact of Fusarium in oats, with a special emphasis on resistance to infection. Oats are generally the less susceptible than the other small-grained cereals, possibly due to the panicle structure leading to single spikelet infections, but the levels of mycotoxins (most commonly DON) are more severe in oats. A number of species infect oats and the species F. langsethii appears common in Scandinavia and produces T2+HT-2 toxins. Dehulling may generally remove the toxins, but the yield impact is unknown. In field infections early decay of kernels may frequently be observed. The infection time appears wider than in wheat or barley. Genetic variation exists in the cultivated germplasm, if a wide range is tested, and very susceptible cultivars may be identified. Apparent resistance has been detected in derivatives from Avena sterilis, and its genetics is being investigated.
KeywordsFusarium Avena oats mycotoxins
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