Inheritance of Resistance to Fusarium Head Blight in Four Populations of Barley

Capettini, Flávio; Rasmusson, D. C.; Dill‐Macky, Ruth; Schiefelbein, Edward L; Elakkad, Amar

doi:10.2135/cropsci2003.1960

Cited by 22 publications

(12 citation statements)

References 14 publications

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“…In our field analyses, we observed that the interactions of the genotype with the environment determine, to the same extent, the phenotypic variation of symptoms on the spike, the DON content and the reduction of grain filling. Heritability of resistance against FG infection is therefore lower than that in wheat, confirming the findings of other authors (Bai et al 2000;Urrea et al 2002;Capettini et al 2003). Consequently, in practical breeding, the expected genetic of FHB resistance is rather weak.…”

Section: Discussionsupporting

confidence: 86%

“…Strong interactions between the genotypes and the environments indicate a weak stability of barley resistances traits of spike and grains previously mentioned in genetic studies (Capettini et al 2003;De la Pena et al 1999). In our field analyses, we observed that the interactions of the genotype with the environment determine, to the same extent, the phenotypic variation of symptoms on the spike, the DON content and the reduction of grain filling.…”

Section: Discussionmentioning

confidence: 77%

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Resistance against Fusarium graminearum and the relationship to β-glucan content in barley grains

et al. 2018

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Fusarium head blight (FHB) caused by Fusarium graminearum (FG) is a destructive disease impacting barley worldwide. The disease reduces the grain yield and contaminates grains with mycotoxins, such as the trichothecene deoxynivalenol (DON). Although the infection mainly affects the grain yield, little is known about its impact on grain structural and biochemical properties. Yet, such information is instrumental to characterize the facets of resistance in the grains. After artificial inoculation of six barley cultivars with FG in a 2 years field test, different levels of symptoms on spikes, of colonisation of grains and of DON content were observed. The infections caused a reduction in grain weight and an average decrease of 10% of the β-glucan content in grains, indicating alterations of grain filling, composition and structure. According to our results, we postulate the presence of two distinct resistance mechanisms in the grain, tolerance to grain filling despite infection as well as the inhibition of mycotoxin accumulation. Differently to wheat, in barley, type IV resistance (tolerance of the grain to infection) is directly linked with type III resistance (resistance against kernel infection). The resistance against toxin accumulation (named type V resistance in wheat) appeared to be independent to all other resistance types. Generally, the resistance was significantly influenced by the environment and by genotype x environment interactions explaining the generally weak stability of resistance in barley. Interestingly, a significant and inverse relationship between DON contamination and β-glucan content in grains suggests that high β-glucan content in grains contributes to type V resistance.

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Section: Discussionsupporting

confidence: 86%

Section: Discussionmentioning

confidence: 77%

Resistance against Fusarium graminearum and the relationship to β-glucan content in barley grains

et al. 2018

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“…These results proved the high environmental effects in the determination of resistant germplasm. Different locations and years of testing are necessary to identify resistant genotypes, and the conditions simulated in the nurseries are essential to increase the heritability of the resistance (Capettini et al 2003).…”

Section: Resultsmentioning

confidence: 99%

“…Use of barley grain contaminated by DON can result in processing problems, including beer off-flavors and gushing, as well as the reality/perception that DON may be a carcinogen (Schwarz et al 2003;Steffenson et al 2003). Host resistance is an important component in FHB management system and has the recognized advantage of being cost-effective and environmentally friendly, although it is hard to achieve due to the lack of known immunity and quantitative inheritance (Capettini et al 2003). Similar to wheat, Type I (resistance to initial infection) and Type II (resistance to fungal spread within plant tissue) resistance have also been reported in barley, although the former is regarded to be more important (McCallum and Tekauz 2002;Steffenson et al 2003;Geddes et al 2008).…”

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confidence: 99%

Evaluation of Canadian barley breeding lines for Fusarium head blight resistance

et al. 2015

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Evaluation of Canadian barley breeding lines for Fusarium head blight resistance. Can. J. Plant Sci. 95: 923Á929. Fusarium head blight (FHB) is a major challenge to the successful production of barley in Canada, as well as for end-users such as the malting and brewing industries. Due to the quantitative inheritance of FHB resistance, continuous effort is required to identify breeding lines with improved FHB resistance and incorporate them into crossing schemes to enhance FHB resistance. In the present study, 402 advanced breeding lines from Alberta, Canada, were evaluated in the FHB screening nursery at CIMMYT, Mexico. In 2011 and 2012, FHB incidence was measured on a scale of 1 to 4 to eliminate the most susceptible lines. In 2013 and 2014, 181 lines with the lowest disease scores in the previous 2 yr were tested in replicated experiments for field FHB index, Fusariumdamaged kernels, and deoxynivalenol content. Agronomic and morphological traits, specifically days to heading, plant height, and row and hull types were also evaluated in relations to FHB parameters. Correlation coefficients among the three FHB parameters in both 2013 and 2014 were all significant at PB0.0001, ranging from 0.36 to 0.63. Additional correlation analysis showed that late-maturing, tall, and two-row lines tended to have lower disease, whereas hull type did not show a significant correlation with FHB. Several lines with high and stable FHB resistance similar to that of the resistant checks were identified. These could be used in breeding programs as resistance sources or be registered as new cultivars if their overall attributes meet commercial standards.

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“…Resistance to accumulation of DON would be very desirable, particularly in barley, but to date there is little evidence for it. Type II resistance has been identified in barley (Zhu et al, 1999), but its value is not clear (Capettini, 1999).…”

Section: Nature Of the Inheritance Of Resistance To Fhbmentioning

confidence: 99%

Host Plant Resistance Genes for Fusarium Head Blight: Mapping and Manipulation with Molecular Markers

et al. 2001

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Fusarium head blight (FHB), caused by Fusarium graminearum Schwabe [teleomorph Gibberella zeae (Schwein.)], or scab, causes severe reductions in yield and quality of wheat (Triticum aestivum L.) and barley (Hordeum vulgare L.). Evaluation of FHB resistance is laborious and subject to environmental influence; therefore, molecular markers for FHB resistance genes will greatly enhance selection for FHB resistance. This review seeks to summarize information on molecular markers associated with quantitative trait loci (QTL) for resistance to FHB in wheat and barley and the use of those markers for marker assisted selection. Our goal is to summarize the current state of knowledge on the genetics of FHB resistance, the map locations of QTL for FHB resistance, and the future directions and potential applications of this research. In wheat, five types of resistance have been described, and Type II resistance (expressed in Chinese wheat cultivar Sumai 3) is the easiest type to assess. Several research groups are developing molecular markers associated with genes for FHB resistance from Sumai 3, a widely used source of Type II resistance in wheat breeding programs worldwide. In four different populations, each having Sumai 3 or a derivative as one parent, one to four QTL have been identified that explain up to 63% of the variation in resistance. QTL were identified on chromosomes 3BS and 6BL in three or more populations. Recently, in barley, restriction fragment length polymorphism (RFLP) markers associated with genes for FHB resistance, deoxynivalenol (DON) accumulation, and kernel discoloration were identified on all seven chromosomes. Three regions, located on chromosomes 2, 3, and 5 were identified in several mapping populations. Comparing the QTL locations between wheat and barley shows that the barley chromosome 3 QTL is located in a syntenous region in wheat. The following areas of research on molecular markers associated with FHB resistance should be emphasized: (i) identifying and mapping better resistance sources in wheat and barley; (ii) validating QTL in additional populations; and (iii) developing markers that can be easily used in breeding programs and across populations.

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Inheritance of Resistance to Fusarium Head Blight in Four Populations of Barley

Cited by 22 publications

References 14 publications

Resistance against Fusarium graminearum and the relationship to β-glucan content in barley grains

Resistance against Fusarium graminearum and the relationship to β-glucan content in barley grains

Evaluation of Canadian barley breeding lines for Fusarium head blight resistance

Host Plant Resistance Genes for Fusarium Head Blight: Mapping and Manipulation with Molecular Markers

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