Quantifying Cephalosporium Stripe Disease Severity on Winter Wheat

Bockus, W. W.; Sim, T.

doi:10.1094/phyto-72-493

Cited by 10 publications

(2 citation statements)

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“…Ledingham et al (1973) developed a system that separates plants into severe, moderate, slight, and nil categories, which is widely used to determine the severity of common root rot. Severity of eyespot is based on the number and size of lesions on the stem base, whereas Cephalosporium stripe severity is based on colonization of successive leaves up to and including the ear; for both diseases, stems are evaluated and grouped into one of the four categories (Bockus and Sim 1982;Specht and Murray 1990;de la Pen˜a and Murray 1994). Rating scores often are summarized as a percentage for common root rot (Burrage and Tinline 1960) or an index for eyespot (Strausbaugh and Murray 1989) and usually are associated with yield loss (Ledingham et al 1973).…”

Section: Methods Of Evaluating Wheat For Resistance To Soil-borne Patmentioning

confidence: 99%

Resistance to soil-borne diseases of wheat: Contributions from the wheatgrasses Thinopyrum intermedium and Th. ponticum

Li¹,

Conner²,

Murray³

2008

Can. J. Plant Sci.

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Eyespot, Cephalosporium stripe, and common root rot are soil-borne diseases that damage the stem bases, vascular system, subcrown internodes,and roots of wheat. Resistance in wheat to these diseases is insufficient to prevent significant yield loss when disease is severe. The wheatgrasses Thinopyrum intermedium and Th. ponticum are highly resistant to these diseases. Identification of disease-resistant wheat-Thinopyrum partial amphiploids, chromosome addition, substitution, and translocation lines makes them a valuable source of resistance genes for wheat breeding programs. Single chromosomes or chromosome segments containing resistance genes can be transferred into wheat to produce genetic stocks that afford a better understanding of the genetic control of resistance in wheatgrasses and new genetic resources for wheat improvement. Resistance to eyespot in Th. intermedium and Th. ponticum was associated with the homoeologous group 4 chromosomes, whereas resistance to Cephalosporium stripe was controlled by genes located on chromosomes 3 and 6 of Th. ponticum. Despite the fact that some eyespot- and common root rot-resistant wheat-Thinopyrum lines have blue kernels, resistance is not tightly linked to the blue aleurone trait. Key words: Thinopyrum intermedium, Th. ponticum, eyespot, Cephalosporium stripe, common root rot, Oculimacula yallundae, O. acuformis, Cephalosporium gramineum, Bipolaris sorokiniana

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Section: Methods Of Evaluating Wheat For Resistance To Soil-borne Patmentioning

confidence: 99%

Resistance to soil-borne diseases of wheat: Contributions from the wheatgrasses Thinopyrum intermedium and Th. ponticum

Li¹,

Conner²,

Murray³

2008

Can. J. Plant Sci.

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“…Ev.]. This disease can cause serious yield losses in winter cereals grown in a continuous cropping system or in short rotations [Mathre and Johnson, 1975;Bockus and Sim IV, 1982]. In Europe Cephalosporium stripe disease occurs in Germany, Italy, The Netherlands, and the UK but most research on this disease has been done in the United States, particularly with respect to its effect on winter wheat [Hawksworth and Waller, 1976;Mathre and Johnston, 1975;Murray, 1988].…”

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confidence: 99%

Disease levels in winter wheat, rye and triticale grown on soil artificially inoculated withCephalosporium gramineum

1995

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Field experiments with winter cereals grown on soil inoculated with C. gramineum showed that wheat and rye cultivars possess some resistance to the pathogen, while the triticale cultivars were the most susceptible. Higher tolerance of the tested wheat cultivars was connected mainly with slow development of disease symptoms; rye cultivars had, on average, lower percentages of plants infected by C. gramineum. The greatest variation in susceptibility to C. gramineum occurred among the selected cultivars of triticale.

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Identification of Cephalosporium stripe resistance quantitative trait loci in two recombinant inbred line populations of winter wheat

et al. 2014

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Identification of genome regions linked to Cephalosporium stripe resistance across two populations on chromosome 3BS, 4BS, 5AL, C5BL. Results were compared to a similar previous study. Cephalosporium stripe is a vascular wilt disease of winter wheat (Triticum aestivum L.) caused by the soil-borne fungus Cephalosporium gramineum Nisikado & Ikata. In the USA it is known to be a recurring disease when susceptible cultivars are grown in the wheat-growing region of Midwest and Pacific Northwest. There is no complete resistance in commercial wheat cultivars, although the use of moderately resistant cultivars reduces the disease severity and the amount of inoculum in subsequent seasons. The goal of this study was to detect and to compare chromosomal regions for resistance to Cephalosporium stripe in two winter wheat populations. Field inoculation was performed and Cephalosporium stripe severity was visually scored as percent of prematurely ripening heads (whiteheads) per plot. 'Tubbs'/'NSA-98-0995' and 'Einstein'/'Tubbs', each comprising a cross of a resistant and a susceptible cultivar, with population sizes of 271 and 259 F (5:6) recombinant inbred lines, respectively, were genotyped and phenotyped across four environments. In the quantitative trait loci (QTL) analysis, six and nine QTL were found, explaining in total, around 30 and 50 % of the phenotypic variation in 'Tubbs'/'NSA-98-0995' and 'Einstein'/'Tubbs', respectively. The QTL with the largest effect from both 'NSA-98-0995' and 'Einstein' was on chromosome 5AL.1 and linked to marker gwm291. Several QTL with smaller effects were identified in both populations on chromosomes 5AL, 6BS, and 3BS, along with other QTL identified in just one population. These results indicate that resistance to Cephalosporium stripe in both mapping populations was of a quantitative nature.

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Quantifying Cephalosporium Stripe Disease Severity on Winter Wheat

Cited by 10 publications

References 0 publications

Resistance to soil-borne diseases of wheat: Contributions from the wheatgrasses Thinopyrum intermedium and Th. ponticum

Resistance to soil-borne diseases of wheat: Contributions from the wheatgrasses Thinopyrum intermedium and Th. ponticum

Disease levels in winter wheat, rye and triticale grown on soil artificially inoculated withCephalosporium gramineum

Identification of Cephalosporium stripe resistance quantitative trait loci in two recombinant inbred line populations of winter wheat

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