The inheritance of resistance to head blight caused by Fusarium culmorum in winter wheat

Abstract

Crosses were made among ten winter wheat genotypes representing different levels of resistance to Fusarium head blight to obtain F, and F 2 generations . Parents, F, and F2 were inoculated with one strain of Fusarium culmorum. Data on incidence of head blight 21 days after first inoculation were analyzed . Broad-sense heritabilities averaged 0.39 and ranged from 0 .05 to 0 .89 in the individual F2 families . The joint-scaling test indicated that the inheritance of Fusarium head blight resistance was adequately described by the additivedominance model, with additive gene action being the most important factor of resistance . With respect to the non-additive effects, dominance of resistance predominated over recessiveness . The number of segregating genes governing resistance in the studied populations was estimated to vary between one and six . It was demonstrated that resistance genes differed between parents and affected resistance differently .

Cereal resistance to Fusarium head blight and possibilities of its improvement through breeding

“…Kooperatorka, Praag 8 and Bizel, possess relatively high levels of FHB resistance and they may serve as alternative sources of FHB resistance non-derived from Sumai 3 and other Asian wheats (Snijders 1990;Šíp & Stuchlíková 1997;Badea et al 2008). However, due to a low agronomic value these tall materials have not been widely exploited in the European wheat breeding programmes until now.…”

Resistance of winter wheat varieties registered in the Czech Republic to mycotoxin accumulation in grain following inoculation with Fusarium culmorum

“…Ittu et al (2002) reached substantial progress in breeding winter wheat for resistance to FHB through the recombination of resistance genes from various sources that were better adapted to European conditions. Selection progress is hampered mainly by the quantitative mode of inheritance of FHB resistance (Snijders 1990), occurrence of genotype by environment interactions (Miedaner et al 2001) and necessity to test at flowering stage (Miedaner et al 2006).…”

Controlling fusarium head blight of wheat (triticum aestivum L.) with genetics

“…These genotypes produce "premature spikes" with the upper portion wilted, leading to bleaching and yield reduction, but are not colonized by the fungus, so DON content is reduced [4]. DON not only plays an important role in fungal spreading and disease development but also threatens human and livestock health with microdosis [9,42]. DON present in food at mg/kg can cause vomiting, diarrhea, fever and other symptoms of acute poisoning in humans and animals, and it is also closely correlated with anemia, immuno-suppression, and cancer [43,44].…”

“…Several review articles on wheat FHB have been published with different foci, including conventional breeding and FHB resistance improvement [1,3,[6][7][8], the occurrence scope and the significance of mycotoxins [9,10], the interaction mechanisms between host and pathogens [11], molecular markers for FHB resistance genetics [12], an alien gene library for enhancing resistance [13], and the main available Quantitative traits loci (QTL) [14,15]. To date, there has been no review of the methods for quickly and accurately evaluating genetic resistance or for effectively developing new FHB-resistant lines for wheat breeding.…”