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13 November 2013 Genetic variation for resistance to Fusarium head blight in winter durum material
Thomas Miedaner, Carl Friedrich Horst Longin
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Abstract

Durum is one of the most susceptible cereals to infection with Fusarium head blight (FHB) due to the lack of resistance sources. Data on the genetic variation and heritability of FHB in elite durum, and especially the new evolving winter durum, are lacking. Thus, we compared 105 elite, winter durum breeding lines with an international collection of 62 old and new winter durum cultivars. We evaluated the development of FHB after inoculation by Fusarium culmorum, heading time, and plant height at three field environments in Germany. Significant genetic variation for FHB was identified in the elite breeding material as well as in the collection. Mean FHB rating was normally distributed with a heritability of >0.7 for both sets, indicating the quantitative genetic nature of the trait. Taking heading time, plant height, and FHB resistance into account, the most interesting genotypes were identified in the elite breeding material. Consequences for the ongoing global efforts for improvement of FHB resistance of durum are discussed.

© CSIRO 2014
Thomas Miedaner and Carl Friedrich Horst Longin "Genetic variation for resistance to Fusarium head blight in winter durum material," Crop and Pasture Science 65(1), 46-51, (13 November 2013). https://doi.org/10.1071/CP13170
Received: 13 May 2013; Accepted: 1 July 2013; Published: 13 November 2013
KEYWORDS
Fusarium culmorum
resistance
Triticum durum
winter durum
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