A Numerical Scale to Classify Reactions of Barley to<i>Pyrenophora Teres</i>

Tekauz, A.

doi:10.1080/07060668509501499

Cited by 154 publications

(138 citation statements)

References 5 publications

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“…Inoculated plants were immediately placed in a fogging chamber and held at 100% relative humidity for 24 h (14 h dark, 10 h light) at 19°C, then returned to the glasshouse for disease development. Notes on infection types (IT) were scored 9 days after inoculation using a scale developed by Tekauz (1985).…”

Section: Disease Response Testsmentioning

confidence: 99%

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Mapping and validation of the genes for resistance to Pyrenophora teres f. teres in barley (Hordeum vulgare L.)

Çakır¹,

Gupta²,

Platz³

et al. 2003

Aust. J. Agric. Res.

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Abstract. Identification and deployment of disease resistance genes are key objectives of Australian barley breeding programs. Two doubled haploid (DH) populations derived from Tallon × Kaputar (TK) and VB9524 × ND11231 (VN) crosses were used to identify markers for net type net blotch (NTNB) (Pyrenophora teres f. teres). The maps included 263 and 250 markers for TK and VN populations, respectively. The TK population was screened with 5 pathotypes and the VN population with 1 pathotype of NTNB as seedlings in the glasshouse. In addition, the TK population was subjected to natural infection in the field at Hermitage Research Station, Qld. Analyses of the markers were performed using the software packages MapManager and Qgene. One region on chromosome 6H was strongly associated with resistance to NTNB in both populations (R 2 = 83% for TK and 66% for VN). In the TK population, 2 more quantitative trait loci (QTLs) were identified on chromosomes 2H and 3H, with R 2 values of 30% and 31%, respectively. These associations were consistent over all pathotypes studied during the seedling stage. The same QTL on chromosome 6H was also found to be highly significantly associated (R 2 = 65%) with the adult plant (field) response in the TK population. There are several very closely linked markers showing strong associations in these regions. Association of the 4 markers on chromosome 6H QTL with resistance to the NTNB has been validated in 2 other DH populations derived from barley crosses Pompadour × Stirling and WPG8412 × Stirling. These markers present an opportunity for marker assisted selection of lines resistant to NTNB in barley breeding programs.

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Section: Disease Response Testsmentioning

confidence: 99%

“…Disease infection types at seedling stage were taken according to Tekauz (1985) using a 1-10 scale (1, resistant; 10, susceptible). Adult plant scoring was taken based on the disease severity using a 1-9 scale (1, resistant; 9, susceptible).…”

Section: Tallon × Kaputar Population Resistance At the Seedling Stagementioning

confidence: 99%

Mapping and validation of the genes for resistance to Pyrenophora teres f. teres in barley (Hordeum vulgare L.)

Çakır¹,

Gupta²,

Platz³

et al. 2003

Aust. J. Agric. Res.

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“…Plants were inoculated at growth stages 12-13 (Zadoks et al, 1974). Seven days later, plants were evaluated with a scale developed for spot form of net blotch by Tekauz (1985). Three replicate pots were used in the experiment.…”

Section: Methodsmentioning

confidence: 99%

Determination of the Seedling Reactions of Twenty Barley Cultivars to Six Isolates of Drechslera Teres F. Maculata

Usta¹,

Karakaya

Oğuz³

et al. 2014

Anadolu J. Agr. Sci.

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Seedling reactions of 20 barley cultivars grown in Turkey were determined under greenhouse conditions to six isolates of Drechslera teres f. maculata, the causal agent of spot form of barley net blotch disease. Isolates were obtained from different provinces of Turkey. Differences among the reactions of the cultivars to the isolates of the fungus were observed. Isolate differences in pathogenicity for each cultivar were also present.

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“…Inoculated seedlings were incubated in a fogging chamber at 19°C under 14-h dark followed by 10-h light. Seedlings were then returned to the glasshouse and infection response (IR) on the second leaf recorded 8 days later using the scale of Tekauz (1985). IRs used for analysis were means of the 2 replicates.…”

Section: Screening For Net Blotch Resistancementioning

confidence: 99%

Mapping of genomic regions associated with net form of netblotch resistance in barley

Raman¹,

Platz²,

Chalmers³

et al. 2003

Aust. J. Agric. Res.

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Abstract. Quantitative trait loci (QTLs) associated with resistance to net blotch and their chromosomal locations were determined from analyses of doubled haploid progeny of Alexis/Sloop, Arapiles/Franklin, Sloop/Halcyon, and recombinant inbred lines of Sloop-sib/Alexis. Five QTLs on chromosomes 2H, 3H, and 4H were found to be associated with seedling resistance to the net form of net blotch. In Arapiles/Franklin and Alexis/Sloop populations, 4 significant QTLs explaining 9-17% of the variation in net blotch resistance were detected on 2H and 3H. A major locus, QRpts4L accounting for 64% of the variation in infection type, was detected on 4H in the Sloop/Halcyon population. In Sloop/Halcyon, 2 microsatellite markers, EBmac0906 and GMS089, and AFLP marker P13/M50-108, co-segregated and detected maximum variability for net blotch resistance as revealed by bootstrap analysis. EBmac0906 and Bmac0181 were validated in F 2 progeny of an Ant29/Halcyon population and reliably predicted phenotypes of 93% of lines resistant and susceptible to net blotch. These markers may be used within breeding programs to select alleles favourable for net blotch resistance derived from Halcyon.A R 0 3 0 2 6 M a p p i n g n e t b l o t c h r e s i s t a n c e H . R a m a n e t a l .

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A Numerical Scale to Classify Reactions of Barley toPyrenophora Teres

Cited by 154 publications

References 5 publications

Mapping and validation of the genes for resistance to Pyrenophora teres f. teres in barley (Hordeum vulgare L.)

Mapping and validation of the genes for resistance to Pyrenophora teres f. teres in barley (Hordeum vulgare L.)

Determination of the Seedling Reactions of Twenty Barley Cultivars to Six Isolates of Drechslera Teres F. Maculata

Mapping of genomic regions associated with net form of netblotch resistance in barley

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