Pyramiding disease resistance genes in elite winter wheat germplasm for Western Canada

Laroche, André; Frick, Michele; Graf, R. J.; Larsen, Julie S.; Laurie, John D.

doi:10.1016/j.cj.2019.08.005

Cited by 11 publications

(6 citation statements)

References 79 publications

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“…The validated comparison with Fhb1 makes this a potential marker for use in FHB resistance breeding. Currently, the registration of a new Canadian winter wheat variety requires a rating for FHB resistance of at least 'moderately susceptible' (Laroche et al 2019), which most likely will be raised to 'intermediate resistance' in the coming years. Gene pyramiding also has yielded very promising results in wheat breeding.…”

Section: Fusarium Head Blight Candidate Disease Resistance Genes and Breeding Strategies In Wheatmentioning

confidence: 99%

Building on a foundation: advances in epidemiology, resistance breeding, and forecasting research for reducing the impact of fusarium head blight in wheat and barley

Fernando

Oghenekaro

Tucker

et al. 2021

Canadian Journal of Plant Pathology

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Section: Fusarium Head Blight Candidate Disease Resistance Genes and Breeding Strategies In Wheatmentioning

confidence: 99%

Building on a foundation: advances in epidemiology, resistance breeding, and forecasting research for reducing the impact of fusarium head blight in wheat and barley

Fernando

Oghenekaro

Tucker

et al. 2021

Canadian Journal of Plant Pathology

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“…In the last decade, several improved rust resistant varieties have been developed through MAS in wheat (Gupta et al., 2010; Miedaner & Korzun, 2012; Randhawa et al., 2019). Furthermore, gene pyramiding has also been employed in rust breeding to transfer multiple genes in commercial varieties to provide durable resistance (Laroche et al., 2019; Liu et al., 2020). These molecular techniques not only saved a lot of time and effort but also provide an edge to breeders over rapidly evolving rust pathogens.…”

Section: Discussionmentioning

confidence: 99%

Identifying and validating SSR markers linked with rust resistance in lentil (Lens culinaris)

Singh

Sirari

Singh³

et al. 2021

Plant Breeding

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Recombinant inbred lines (RILs) developed from a cross between rust resistant (FLIP‐2004‐7L) and susceptible (L‐9–12) genotypes were phenotyped against lentil rust at two hot‐spot locations for two consecutive years (2017–2018 and 2018–2019) and analysed genetically for molecular map construction. Based on the mean score of both the locations, the RILs were classified into resistant and susceptible classes. The frequency distribution of disease severity in the RILs did not show a continuous variation, which strongly indicate the role of a major gene controlling the rust resistance. Resistant and susceptible bulks were constituted based on phenotypic data of RILs. Of 389 SSR markers, eight were found polymorphic between bulks. Genotyping of RILs with these eight markers revealed two markers, namely LcSSR440 and LcSSR606, showing co‐segregation with rust resistance, which flanked the gene at 8.3 and 8.1cM, respectively. The applicability of these markers for marker‐assisted breeding was further evaluated on a set of rust resistant and susceptible genotypes of lentil.

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“…For many years, markers of resistance genes to major diseases of grains have been identified and used by the international community in this direction. Thus, scientists carried out pyramiding of various Resistance genes (R) into breeding lines and identified their presence in Canadian winter wheat varieties that were released as part of the winter wheat breeding program at the Lethbridge Research and Development Centre, Agriculture and Agri-Food Canada (Laroche et al, 2019). Kazakh scientists are also conducting research in this field (Kokhmetova and Esenbekova, 2011;Kokhmetova et al, 2014a) and we are continuing the analysis of the selected breeding lines of winter wheat for further study of the presence of resistance genes on the immunological parameters.…”

Section: Discussionmentioning

confidence: 99%

Immunological Characteristics of Winter Wheat Lines with Resistance to Rust Diseases in Kazakhstan

Eserkenov¹,

Bastaubaeva²,

Dubekova³

et al. 2021

OnLine Journal of Biological Sciences

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The growing spread of particularly dangerous diseases (variations of rust) in the grain-bearing countries raises fears of the harmfulness of phytopathogens increasing. In the years favorable for their development, a sharp decrease in the productivity of the ear and the quality of the grain is observed. The high potential of the pathogen to produce new aggressive disease variations makes most grain varieties susceptible to this pathogen. To determine the immunological value of breeding lines of winter wheat, we conducted immunological studies on the experimental base of the Kazakh Research Institute of Agriculture and Plant Growing in 2015-2020. Under the conditions of artificial infectious background at a specialized facility, a targeted immunological assessment was carried out on 28 lines of irrigated winter bread wheat, 24 lines of rainfed winter bread wheat and 20 lines of winter durum wheat. An artificially infectious background was created using a population of rust uredospores: P. striiformis, P. triticina, P. graminis. According to the reaction to the pathogen population, the breeding lines were divided into resistance types according to the established disease resistance scales. The authors analyzed the state of resistance of the winter wheat line of Kazakhstan breeding to the rust population in the conditions of the southeast of Kazakhstan. The paper characterizes the reactions of breeding lines to rust pathogens P. striiformis, P. triticina, P. graminis. Based on the immunological assessment, two lines of common wheat, one line of soft wheat and four lines of durum wheat with resistance were isolated using a reaction to P. striiformis with no signs of disease. Five lines of common wheat showed moderate resistance to this pathogen. The other (79.2%) breeding lines of winter wheat were characterized as moderately susceptible and susceptible to the rust pathogen. The identified breeding lines combine high economically valuable traits (productivity) and resistance to yellow rust and are of the greatest immunological value. This proves the prospects and expediency of their further use in the breeding improvement of the local agroecotype of winter wheat.

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Pyramiding disease resistance genes in elite winter wheat germplasm for Western Canada

Cited by 11 publications

References 79 publications

Building on a foundation: advances in epidemiology, resistance breeding, and forecasting research for reducing the impact of fusarium head blight in wheat and barley

Building on a foundation: advances in epidemiology, resistance breeding, and forecasting research for reducing the impact of fusarium head blight in wheat and barley

Identifying and validating SSR markers linked with rust resistance in lentil (Lens culinaris)

Immunological Characteristics of Winter Wheat Lines with Resistance to Rust Diseases in Kazakhstan

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