Effect of bunt infection on the frost resistance of wheat varieties and of lines containing <i>Bt</i> genes

Veisz, O.; Szunics, L.

doi:10.1111/j.1439-0523.1997.tb02165.x

Cited by 6 publications

(6 citation statements)

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“…The level of resistance was determined using the following scale: Percentage of infected heads 0.0% = very resistant, 0.1–5.0% = resistant, 5.1–10.0% = moderately resistant, 10.1–30.0% = moderately susceptible, 30.1–50.0% = susceptible, 50.1–100.0% = very susceptible [ 37 ] . Data of the different traits were collected using field book Android application [ 38 ].…”

Section: Methodsmentioning

confidence: 99%

Genetic architecture of common bunt resistance in winter wheat using genome-wide association study

et al. 2018

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BackgroundCommon bunt (caused by Tilletia caries and T. foetida) has been considered as a major disease in wheat (Triticum aestivum) following rust (Puccinia spp.) in the Near East and is economically important in the Great Plains, USA. Despite the fact that it can be easily controlled using seed treatment with fungicides, fungicides often cannot or may not be used in organic and low-input fields. Planting common bunt resistant genotypes is an alternative.ResultsTo identify resistance genes for Nebraska common bunt race, the global set of differential lines were inoculated. Nine differential lines carrying nine different genes had 0% infected heads and seemed to be resistant to Nebraska race. To understand the genetic basis of the resistance in Nebraska winter wheat, a set of 330 genotypes were inoculated and evaluated under field conditions in two locations. Out of the 330 genotypes, 62 genotypes had different degrees of resistance. Moreover, plant height, chlorophyll content and days to heading were scored in both locations. Using genome-wide association study, 123 SNPs located on fourteen chromosomes were identified to be associated with the resistance. Different degrees of linkage disequilibrium was found among the significant SNPs and they explained 1.00 to 9.00% of the phenotypic variance, indicating the presence of many minor QTLs controlling the resistance.ConclusionBased on the chromosomal location of some of the known genes, some SNPs may be associated with Bt1, Bt6, Bt11 and Bt12 resistance loci. The remaining significant SNPs may be novel alleles that were not reported previously. Common bunt resistance seems to be an independent trait as no correlation was found between a number of infected heads and chlorophyll content, days to heading or plant height.Electronic supplementary materialThe online version of this article (10.1186/s12870-018-1435-x) contains supplementary material, which is available to authorized users.

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Section: Methodsmentioning

confidence: 99%

Genetic architecture of common bunt resistance in winter wheat using genome-wide association study

et al. 2018

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“…The disease incidence was measured for harvest of 100 heads at medium milk development stage (BBCH 75) as the proportion of infected ears from the total ear number harvested. The following scale was used to estimate varietal resistance: infected ears 0.0 = very resistant, 0.1-5.0 = resistant, 5.1-10.0 = moderately resistant, 10.1-30.0 = moderately susceptible, 30.1-50.0 = susceptible, 50.1-100.0 = very susceptible (Szunics, 1990;Veisz et al, 2000). Statistical analysis was conducted by calculation of the mean and its standard devastation (SD).…”

Section: Methodsmentioning

confidence: 99%

Response of Lithuanian Winter Wheat Advanced Lines to Common Bunt (Tilletia tritici (BJERK.) WINT)

Ruzgas¹,

Liatukas²

2009

Proceedings of the Latvian Academy of Sciences. Section B. Natural, Exact, and Applied Sciences.

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Response of Lithuanian Winter Wheat Advanced Lines to Common Bunt (Tilletia tritici (BJERK.) WINT) The study was carried out at the Lithuanian Institute of Agriculture in an artificially inoculated nursery during 2006-2007. Resistance to common bunt in 2006 was tested for 71, in 2007 for 118 breeding lines of Lithuanian winter wheat from the competitive trial nursery. Additionally, 148 promising lines were selected and tested from the check nursery, which possessed some resistance in their pedigree ancestors. The average disease incidence in 2006 and 2007 was 80.9 and 63.5%, respectively. The very high infection level highlighted the genotypes with the most effective resistance under conditions highly favourable for common bunt. There were no lines without infected ears. Among the 29 breeding lines tested in the two years, two lines Bill/Aspirant and Dream/Lut.9329 were infected the least, 17.2% and 1.9% in 2006 and 18.5% and 7.8% in 2007, respectively. Most of the breeding lines were highly susceptible. Lines with disease incidence over 50% accounted for over 90% in 2006 and 80% in 2007 of the total lines tested. The most resistant lines had in their pedigrees the following resistance sources: genotypes Bill, Lut.9329, Strumok, Lut.9313, Lut.9358, Tommi as well as Dream, Haldor, 91002G2.1, 96/101, Bezenchiukskaya380.

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“…This new race differs from T-30 in that it is virulent on Bt3 while T-30 is not. The virulence pattern of this new race is also unlike those of the bunt populations in Europe (3,25,31,41,42,48). However, it has the same virulence pattern as R-55, an artificial race produced through hybridization of races by R. J. Metzger (B. Goates, personal communication).…”

Section: Discussionmentioning

confidence: 92%

A New Pathogenic Race of Tilletia caries Possessing the Broadest Virulence Spectrum of Known Races

Matanguihan

Jones

2011

Plant Health Progress

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Common bunt, caused by the fungi Tilletia caries and T. laevis, is one of the most destructive seedborne diseases of wheat. In conventional agriculture, common bunt is managed almost exclusively with chemical seed treatments. However, in organic farming, synthetic chemicals are prohibited. Because of this, there has been a resurgence of this disease in organic wheat. In order to maintain high yields and excellent seed quality, organic growers must rely heavily on resistant wheat cultivars. To breed cultivars with resistance against common bunt, and to effectively deploy resistance genes, it is necessary to identify and monitor the pathogenic races of the local pathogen population. Towards this goal, races of T. caries present in Washington, Oregon, California, and Idaho were identified by inoculating field collections of the pathogen on 13 differential wheat cultivars. Results of three years' testing show that there is a new pathogenic race in Washington State, which possesses the broadest virulence spectrum to date compared with known bunt races. Furthermore, two-year data indicates the presence of other new races in Washington, California, and Oregon. Accepted for publication 5 April 2011. Published 20 May 2011.

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Effect of bunt infection on the frost resistance of wheat varieties and of lines containing Bt genes

Cited by 6 publications

References 1 publication

Genetic architecture of common bunt resistance in winter wheat using genome-wide association study

Genetic architecture of common bunt resistance in winter wheat using genome-wide association study

Response of Lithuanian Winter Wheat Advanced Lines to Common Bunt (Tilletia tritici (BJERK.) WINT)

A New Pathogenic Race of Tilletia caries Possessing the Broadest Virulence Spectrum of Known Races

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