Development of RAPD markers associated with common bunt resistance to race T1 (<i>Tilletia tritici</i>) in spelt wheat

He, CS; Hughes, G. R.

doi:10.1046/j.1439-0523.2003.00888.x

Cited by 3 publications

(1 citation statement)

References 13 publications

(15 reference statements)

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“…Most successful reports of the use of BSA to identify molecular markers linked to traits of interest have involved qualitative traits such as powdery mildew resistance (Xie et al. 2004), common bunt resistance (He and Hughes 2003), and leaf rust resistance (Cherukuri et al. 2003).…”

Section: Discussionmentioning

confidence: 99%

Identification of novel QTL for resistance to crown rot in the doubled haploid wheat population ‘W21MMT70’ × ‘Mendos’

Bovill

Ritter

et al. 2006

Plant Breeding

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Crown rot (causal agent Fusarium pseudograminearum) is a fungal disease of major significance to wheat cultivation in Australia. A doubled haploid wheat population was produced from a cross between line ÔW21MMT70Õ, which displays partial seedling and adult plant (field) resistance to crown rot, and ÔMendosÕ, which is moderately susceptible in seedling tests but partially resistant in field trials. Bulked segregant analysis (BSA) based on seedling trial data did not reveal markers for crown rot resistance. A framework map was produced consisting of 128 microsatellite markers, four phenotypic markers, and one sequence tagged site marker. To this map 331 previously screened AFLP markers were then added. Three quantitative trait loci (QTL) were identified with composite interval mapping across all of the three seedling trials conducted. These QTL are located on chromosomes 2B, 2D and 5D. The 2D and 5D QTL are inherited from the line ÔW21MMT70Õ, whereas the 2B QTL is inherited from ÔMendosÕ. These loci are different from those associated with crown rot resistance in other wheat populations that have been examined, and may represent an opportunity for pyramiding QTL to provide more durable resistance to crown rot.

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Section: Discussionmentioning

confidence: 99%

Identification of novel QTL for resistance to crown rot in the doubled haploid wheat population ‘W21MMT70’ × ‘Mendos’

Bovill

Ritter

et al. 2006

Plant Breeding

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Control of Common Bunt in Organic Wheat

2011

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Common bunt, caused by the seedborne and soilborne pathogens Tilletia caries and T. laevis, has re-emerged as a major disease in organic wheat. In conventional agriculture, common bunt is routinely managed with the use of synthetic chemical seed treatments. For this reason, common bunt is a relatively unimportant disease in conventional agriculture. However, since synthetic chemical inputs are prohibited in organic agriculture, common bunt is a major threat once more in organic wheat and seed production. The challenge today is to manage the disease without the use of chemical seed treatments. This review reports on the management of common bunt under organic farming systems, mainly through host resistance and organic seed treatments. We report the history of screening wheat germplasm for bunt resistance, the search for new sources of resistance, and identification and mapping of bunt resistance genes. Since the pathogen has a gene-for-gene relationship with the host, this review also includes a summary of work on pathogen race identification and virulence patterns of field isolates. Also included are studies on the physiological and molecular basis of host resistance. Alternative seed treatments are discussed, including physical seed treatments, and microbial-based and plant-based treatments acceptable in organic systems. The article concludes with a brief discussion on the current gaps in research on the management of common bunt in organic wheat.

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Inheritance of resistance to common bunt in spelt and common wheat

Hughes¹

2003

Can. J. Plant Sci.

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He, C. and Hughes, G. R. 2003. Inheritance of resistance to common bunt in spelt and common wheat. Can. J. Plant Sci. 83: 47-56. Common bunt causes yield loss and reduces grain quality in both common and durum wheats in western Canada. Since the most cost-effective method of control is the use of host resistance, this study was conducted to provide information on the genetic control of bunt resistance in three potentially new sources: common wheat cultivar Triple Dirk and spelt wheat cultivars RL5407 and SK0263. The segregating populations from the three crosses Laura/Triple Dirk, Laura/RL5407 and Genesis/SK0263 were evaluated for common bunt resistance in the field for races T1, T13 and L7 and in the greenhouse for race T1. Genetic analysis indicated that Triple Dirk may carry a major gene controlling resistance to each of the bunt races T1, T13 and L7. The spelt wheat RL5407 may carry a major gene for resistance to both races T13 and L7 or genes conditioning resistance to T13 and L7 that are closely linked, and an additional major gene for resistance to race T1. The two major genes carried by RL5407 are believed to be different. SK0263 possibly carried two major genes for resistance to race T1. The disease data in F 1 and F 2 generations did not show any dominance for bunt resistance to race T1 in any of the three crosses. From crosses involving Triple Dirk, RL5407 and SK0263, selection of breeding lines highly resistant to common bunt can be effective in the progenies due to the nature of nondominance and one-or two-gene controlled resistance.Kew words: Wheat, common bunt, Triticum sp., Tilletia sp. et Genesis/SK0263 pour voir si elles résistaient aux races T1, T13 et L7 de la carie au champ et à la race T1 en serre. L'analyse génétique révèle que Triple Dirk pourrait porter un gène important codant la résistance aux races T1, T13 et L7. La variété d'é-peautre RL5407, quant à elle, possèderait un gène majeur de résistance aux races T13 et L7 ou des gènes étroitement liés, conditionnant cette résistance, ainsi qu'un gène important de résistance à la race T1. On croit que les deux grands gènes de résistance de RL5407 sont différents. Par ailleurs, il se pourrait que SK0263 porte deux gènes majeurs de résistance à la race T1. Selon les données recueillies sur la F 1 et la F 2 , aucun des trois croisements ne présente de gène dominant codant la résistance à la race T1. La sélection de lignées généalogiques très résistantes à la carie du blé parmi les hybrides de Triple Dirk, de RL5407 et de SK0263 pourrait s'avérer efficace puisque la résistance n'est pas codée par un gène dominant ou résulte de l'action d'un seul ou de deux gènes.

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Development of RAPD markers associated with common bunt resistance to race T1 (Tilletia tritici) in spelt wheat

Cited by 3 publications

References 13 publications

Identification of novel QTL for resistance to crown rot in the doubled haploid wheat population ‘W21MMT70’ × ‘Mendos’

Identification of novel QTL for resistance to crown rot in the doubled haploid wheat population ‘W21MMT70’ × ‘Mendos’

Control of Common Bunt in Organic Wheat

Inheritance of resistance to common bunt in spelt and common wheat

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