Registration of NC97BGTD7 and NC97BGTD8 Wheat Germplasms Resistant to Powdery Mildew

Murphy, J. Paul; Leath, S.; Huynh, D.; Navarro, R. A.; Shi, Ainong

doi:10.2135/cropsci1999.0011183x003900030066x

Cited by 10 publications

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“…A program of interspecific hybridization between powdery mildew resistant diploid and tetraploid relatives and the soft red winter wheat cultivar Saluda (Starling et al, 1986) was initiated in 1986 by the small grains breeding and pathology projects at North Carolina State University. To date 11 germplasm lines have been released (Murphy et al, 1998, 1999a, 1999b, 2002; Navarro et al, 2000).…”

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Inheritance and Chromosomal Assignment of Powdery Mildew Resistance Genes in Two Winter Wheat Germplasm Lines

et al. 2005

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mainly via a hypersensitive foliar reaction involving major Pm genes in a gene-for-gene interaction (Bennett, Powdery mildew of wheat (Triticum aestivum L.), caused by Blu-1984; Chen and Chelkowski, 1999; Hsam and Zeller, meria graminis DC f. sp. tritici Em. Marchal, occurs annually in 2002). Thirty major gene loci have been identified to eastern North America resulting in reduced grain yield and end-use quality in susceptible cultivars. The objectives of this study were to G. Srnić, Pioneer Hi-Bred International, Inc., 7300 NW 62nd Avenue, lar markers of genes for resistance to powdery mildew

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Inheritance and Chromosomal Assignment of Powdery Mildew Resistance Genes in Two Winter Wheat Germplasm Lines

et al. 2005

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“…Because MlNCD1 is located on chromosome 7DS, it can be readily pyramided with other unlinked powdery mildew genes such as Pm25 (Shi et al, 1998), Pm34 (Miranda et al, 2006), Pm 35 (Miranda et al, 2007), and Pm37 (Perugini et al, 2008), which are effective against natural powdery mildew populations in the eastern United States (Parks et al, 2008). Because these Pm genes were identified in near isolines with the same adapted genetic background (Murphy et al, 1998, 1999a, b, 2002), no nontarget marker selection would be required during pyramid building. Marker‐assisted selection would allow rapid development of adapted germplasm lines or advanced breeding lines with multiple Pm genes.…”

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MlNCD1: A Novel Aegilops tauschii‐Derived Powdery Mildew Resistance Gene Identified in Common Wheat

et al. 2012

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Powdery mildew is a major fungal disease in wheat, especially in cool maritime climates. A novel Aegilops tauschii Coss.-derived wheat powdery mildew resistance gene present in the germplasm line NC96BGTD1 was genetically characterized as a monogenic trait in field trials using F¿-and F^-derived lines from a NC96BGTD1 x 'Saluda' cross. Simple sequence repeat (SSR) markers were used to map and tag the resistance gene present in NC96BGTD1. Two dominant SSR markers flanking the resistance gene were identified. Xgwm635 mapped 5.5 and 8.3 cM distal to the resistance gene in the Fg and F^ generations, respectively. Xgpw328 mapped 16.2 cM proximal to the resistance gene in the f^ and 13.6 cM proximal to the resistance gene in the F^ generation. These SSR markers were previously mapped to the short arm of chromosome 7D and their positions were confirmed using Chinese Spring aneuploid and deletion stocks. Significant segregation distortion was observed in the F^ generation with markers distal to the resistance gene showing a preference for the A. tauschii alíeles while markers proximal to the resistance gene showed less significant preference for Saluda alíeles. Only the adult plant resistance gene Pm38 has been mapped to the short arm of chromosome 7D but to a more proximal position than the gene in NC96BGTD1. The resistance gene described herein should be temporarily designated MlNCDl.].]. Maxwell,

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“…TA2492 is a powdery mildew-resistant Ae. tauschii accession (Murphy et al 1999) and TA2377 is a powdery mildewresistant Ae. tauschii subsp.…”

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Identification and molecular mapping of a resistance gene to powdery mildew from the synthetic wheat line M53

Zhang

et al. 2010

J Appl Genetics

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Powdery mildew disease caused by Blumeria graminis f. sp. tritici (Bgt) is an economically important disease in wheat worldwide. The identification of germplasms resistant to the disease can not only facilitate the breeding of resistant cultivars, but can also broaden the diversity of resistance genes. The Mexican M53 is a synthetic hexaploid wheat line developed at the International Maize and Wheat Improvement Center (CIMMYT) from the cross between Triticum durum and Aegilops tauschii249. Infection of M53 with 15 different pathogen races revealed that the resistance in M53 was race-dependent and effective against the majority of the tested Bgt races, including the race 15 predominant in the Beijing wheat growing area. Inoculation of the parents of M53 with the race 15 demonstrated that M53 and Ae. tauschii249 were resistant, whereas T. durum was susceptible. The inoculation of three segregating F(2) populations developed from the crosses between M53 and three susceptible Chinese wheat cultivars with the race 15 showed that the resistant gene in M53 segregated in a single dominant manner. Amplified fragment length polymorphism (AFLP) and simple sequence repeat (SSR) markers were used to map the gene in a segregating F(2) population consisting of 213 lines developed from the cross Wan7107 × M53. Two closely linked AFLP markers, Apm109 and Apm161, were identified to flank the gene with genetic distances of 1.0 cM and 3.0 cM, respectively. The recognized gene was assigned to the long arm of chromosome 5D as determined by three linked SSR markers, Xwmc289b, Xgwm583, and Xgwm292, and by the physical mapping of Apm109 using Chinese Spring nullisomic-tetrasomic and ditelosomic stocks. The resistance gene identified in M53, temporarily designated as Pm-M53, could be used in local wheat-breeding programs to improve powdery mildew resistance.

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Registration of NC97BGTD7 and NC97BGTD8 Wheat Germplasms Resistant to Powdery Mildew

Cited by 10 publications

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Inheritance and Chromosomal Assignment of Powdery Mildew Resistance Genes in Two Winter Wheat Germplasm Lines

Inheritance and Chromosomal Assignment of Powdery Mildew Resistance Genes in Two Winter Wheat Germplasm Lines

MlNCD1: A Novel Aegilops tauschii‐Derived Powdery Mildew Resistance Gene Identified in Common Wheat

Identification and molecular mapping of a resistance gene to powdery mildew from the synthetic wheat line M53

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