Investigations in the regulation of common bunt (Tilletia tritici) of winter wheat with regard to threshold values, cultivar susceptibility and non-chemical protection measures

2007 ◽  
Vol 114 (6) ◽  
pp. 269-275 ◽  
Author(s):  
F. Waldow ◽  
M. Jahn
Keyword(s):  
Winter Wheat ◽  
Threshold Values ◽  
Common Bunt ◽  
Protection Measures ◽  
Tilletia Tritici ◽  
Chemical Protection ◽  
Cultivar Susceptibility

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

2009 ◽  
Vol 63 (1-2) ◽  
pp. 51-56
Author(s):  
Vytautas Ruzgas ◽  
Žilvinas Liatukas
Keyword(s):  
Winter Wheat ◽  
Disease Incidence ◽  
Common Bunt ◽  
Infection Level ◽  
Breeding Lines ◽  
Tilletia Tritici ◽  
Resistance Sources ◽  
Resistant Lines ◽  
High Infection ◽  
Very High

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.

Seeding date and location affect winter wheat infection by common bunt (Tilletia tritici and T. laevis) in western Canada

2013 ◽  
Vol 93 (3) ◽  
pp. 483-489 ◽  
Author(s):  
D. A. Gaudet ◽  
B. J. Puchalski ◽  
T. Despins ◽  
C. McCartney ◽  
J. G. Menzies ◽  
...  
Keyword(s):  
Winter Wheat ◽  
Control Measures ◽  
Resistant Variety ◽  
Western Canada ◽  
Common Bunt ◽  
Wheat Varieties ◽  
Tilletia Tritici ◽  
Seeding Date ◽  
High Infection ◽  
Winter Wheat Varieties

Gaudet, D. A., Puchalski, B. J., Despins, T., McCartney, C., Menzies, J. G. and Graf, R. J. 2013. Seeding date and location affect winter wheat infection by common bunt (Tilletia tritici and T. laevis) in western Canada. Can. J. Plant Sci. 93: 483–489. The majority of western Canadian winter wheat varieties are susceptible to common bunt (Tilletia tritici and T. laevis) and the risk to production, particularly in Saskatchewan and Manitoba, where the majority of production occurs, is unknown. Inoculated trials were employed to determine the effects of fall seeding date on bunt infection levels on one resistant and two susceptible winter wheat varieties at three locations in western Canada during three growing seasons from 2007/2008 to 2009/2010. Among the three locations, average infection levels were highest in Lethbridge, AB, followed by Glenlea, MB, and Saskatoon, SK. Later seeding resulted in high infection levels at all three locations in the susceptible varieties, particularly in Lethbridge, but high infection levels were observed in the earliest seeded treatments at both the Saskatchewan and Manitoba locations. The resistant variety Blizzard consistently exhibited infection levels of less than 3% infection across all environments. In a second test at conducted at Lethbridge, 10 of the 11 currently grown winter wheat varieties were susceptible to common bunt. These results indicate that there is a general risk of common bunt infection to winter wheat production across western Canada and that control measures must be taken until resistant varieties are developed.

scholarly journals The impact of genotype and common bunt intensity on winter wheat productivity in Southeastern Kazakhstan

2020 ◽  
Author(s):  
Ye.B. Dutbayev ◽  
◽  
A. Kuresbek ◽  
A.T. Sarbaev ◽  
N.M. Kuldybayev ◽  
...  
Keyword(s):  
Winter Wheat ◽  
Common Bunt ◽  
Tilletia Tritici ◽  
The Impact

Твердая головня на озимой пшенице вызывается грибами Tilletia tritici и T. laevis и может вызывать потери урожая от 30% и более. Исследования проводились в 2016–2017 гг. на 5 коммерческих сортах озимой пшеницы на площадках Казахского научно-исследовательского института земледелия и растениеводства. С помощью статистической программы R установлено, что урожай зерна от твердой головни снижался на 0,4–32,3%, а на урожайность растений оказывали влияние факторы сорта и степени их пораженности болезнью. Эти показатели коррелировали с высотой растений, нижнего колена, длиной и шириной колоса, количеством колосков, весом зерна с колоса и с растения. У четырех сортов потери урожая зерна (Жетысу, Фараби, Ажарлы и Стекловидная 24) составили от 0,2 до 3,6 %, а у сорта Наз эти показатели были в пределах 32,3 %. У сорта Наз 43,0 % растений были поражены твердой головней на 100 %, у Жетысу, Фараби, Ажарлы и Стекловидная 24 поражено до 15, 77, 85, 44 % растений соответственно, с уровнем пораженности от 10 до 20–30 %.

scholarly journals Resistance of some commercial winter wheat cultivars to Tilletia tritici

2007 ◽  
pp. 155-159
Author(s):  
Mirjana Staletic ◽  
Slavisa Gudzic ◽  
Radivoje Jevtic ◽  
Milivoje Milovanovic ◽  
Vesna Stevanovic ◽  
...  
Keyword(s):  
Winter Wheat ◽  
Causal Agent ◽  
The Other ◽  
Wheat Cultivars ◽  
Common Bunt ◽  
Tilletia Tritici ◽  
Commercial Cultivars ◽  
Winter Wheat Cultivars

This paper deals with the resistance of twenty commercial winter wheat cultivars to common bunt causal agent (Tilletia tritici). Significant differences among the cultivars concerning the infection percent were observed, as well as the differences in the level of commercial cultivars' resistance to T. tritici. Most of the studied cultivars belonged to susceptible categories, and just few of them to the resistant ones. Cultivar Lasta was classified as highly resistant during the both investigation years in Kragujevac, while in Leposavic Lasta and Tiha were classified as resistant. The other studied cultivars were more or less susceptible.

scholarly journals Reaction of winter wheat cultivars to common bunt Tilletia tritici (Bjerk.) Wint. and T. laevis Kühn

2008 ◽  
Vol 43 (No. 4) ◽  
pp. 138-141 ◽  
Author(s):  
V. Dumalasová ◽  
P. Bartoš
Keyword(s):  
Winter Wheat ◽  
Wheat Cultivars ◽  
Common Bunt ◽  
Tilletia Tritici ◽  
Winter Wheat Cultivars ◽  
One Year

Fifteen registered winter wheat cultivars were tested for reaction to common bunt in 2-years trials. A mixture of seven Czech proveniences of common bunt was used for inoculation. Cvs Globus and Bill were most resistant in both years. The reaction of these two cultivars to 16 Czech and German samples of common bunt of different proveniences was also tested. On cvs Globus and Bill only one sample in one year caused bunt incidence 29.3% and 19.3%, whereas the incidence caused by other bunt samples was below 10% and 15%, respectively.

scholarly journals Compatible and Incompatible Interactions in Wheat Involving the Bt-10 Gene for Resistance to Tilletia tritici, the Common Bunt Pathogen

2007 ◽  
Vol 97 (11) ◽  
pp. 1397-1405 ◽  
Author(s):  
Denis A. Gaudet ◽  
Zhen-Xiang Lu ◽  
Frances Leggett ◽  
Bryan Puchalski ◽  
André Laroche
Keyword(s):  
Compatible Interaction ◽  
Incompatible Interaction ◽  
Common Bunt ◽  
Tilletia Tritici ◽  
Pathogen Invasion ◽  
Reaction Zones ◽  
The Common ◽  
Wheat Lines ◽  
Compatible Interactions ◽  
Incompatible Interactions

The infection of wheat lines Neepawa (susceptible), and its sib BW553 that is nearly isogenic for the Bt-10 resistance gene by differentially virulent races T1 and T27 of common bunt (Tilletia tritici), was followed for 21 days following seeding (dfs) using fluorescence and confocal microscopy. Spore germination was nonsynchronous and all spore stages including germination were observed 5 to 21 dfs. Initial host perception of pathogen invasion, based on autofluorescence in epidermal cells adjacent to the appressoria, was similar in both compatible and incompatible interactions, and occurred as early as 5 to 6 dfs. The total number of sites on a 1-cm segment of coleoptile adjacent to the seed that exhibited autofluorescence was similar in both the compatible and incompatible interactions and rose to a maximum of 35 to 40 per 1 cm length of coleoptile following 17 dfs, although new infection events were observed as late as 21 dfs. In the compatible interaction, the autofluorescence became more diffuse 10 to 12 dfs, emanating in all directions in association with fungal spread. In the incompatible interaction, autofluorescence remained restricted to a small area surrounding the penetration site. Two different reaction zones that extended further in tissues surrounding the penetration point in the incompatible interaction compared with the compatible interaction were identified. The accumulation of callose around invading fungal hyphae was observed during both the compatible and incompatible interactions from 8 to 21 dfs. While callose accumulation was more extensive and widespread in the incompatible interaction, it was clearly present in compatible interactions, particularly in treatments involving BW553. These results were confirmed by expression of callose synthase transcripts that were more abundant in BW553 than in Neepawa and were upregulated during pathogen infection in both compatible and incompatible interactions.

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