Analysis of recombinant inbred line populations derived from wheat landraces to identify new genes for wheat stem sawfly resistance

Varella, Andrea C.; Weaver, David K.; Blake, N. K.; Hofland, Megan L.; Heo, Hwa‐Young; Cook, Jason P.; Lamb, P. F.; Jordan, Katherine; Akhunov, Eduard; Chao, Shiaoman; Talbert, L. E.

doi:10.1007/s00122-019-03347-8

Cited by 8 publications

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“…The efficacy of WSS resistance is greatly influenced by both genotype (G) and growing environment, and (or) their interactions (GE) (Beres et al 2011). Genetic mapping confirmed that stem-solidness in wheat cultivars is controlled predominantly by the Qss.msub-3BL locus on chromosome 3B introduced from the Portuguese landrace (McNeal et al 1959;Varella et al 2019) and other minor genes located on chromosomes 3A, 3B, 3D, 5A, 5B, and 5D (Larson and MacDonald 1959;Cook et al 2004Cook et al , 2019Houshmand et al 2007;Nilsen et al 2017;Appels et al 2018;Varella et al 2019). The recently released hexaploid wheat reference genome reported a gene called SSt1 (Appels et al 2018), which is responsible for stem solidness controlled by the Qss.msub-3BL.b allele.…”

Section: Introductionmentioning

confidence: 94%

Stability analysis of stem solidness, grain yield, and grain protein concentration in spring wheat

et al. 2021

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The wheat stem sawfly, Cephus cinctus Norton (Hymenoptera: Cephidae), is a major pest of wheat (Triticum aestivum L.) in the northern Great Plains where it is a constant threat in Montana and is resurging in Alberta, Saskatchewan and North Dakota. Adoption of solid-stemmed cultivars is an important management tool for wheat growers; however, the inconsistent pith expression first noted with the release of ‘Rescue’ has been repeatedly observed in modern cultivars such as ‘Lillian’ in Canada. Given the extensive hectares planted to solid-stemmed wheat cultivars during an outbreak, identification of cultivars that display stable stem solidness, grain yield and grain protein concentration across a wide range of environments where stem sawfly infestations occur is desirable. We assessed spring wheat plant responses in eight solid-stemmed and two hollow-stemmed genotypes grown across diverse environments using multiple statistical models. Study sites included southern Alberta and Saskatchewan, Montana and North Dakota. Most models agreed that the genotypes, ‘Choteau’ ‘BW925’ and ‘Mott’ consistently displayed high and stable stem solidness concomitant with high grain yield. ‘Choteau’ and ‘BW925’ also consistently met or exceeded the desired threshold of a 3.75/5 pith rating (averaged from the lower four stem internodes) for optimum resistance whereas, ‘Mott’ developed optimal pith at a specific (early) phenological stage when resistance to WSS infestation is critical. Exploring stability of stem solidness identified ideal genotypes that would enhance germplasm development efforts, which exemplifies how this approach can facilitate the selection, production, and adoption of solid-stemmed wheat cultivars in regions prone to WSS attack.

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Section: Introductionmentioning

confidence: 94%

Stability analysis of stem solidness, grain yield, and grain protein concentration in spring wheat

et al. 2021

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“…Inconsistent expression in stem solidness is affected by location, genotype, and their complex interactions (Beres et al., 2011, 2017; Cook et al., 2004; Hayat et al., 1995; Lanning et al., 2006). To enhance the WSS resistance provided by the solid stem trait inherited from Rescue, research was conducted to screen novel sources of resistance and identify new WSS resistance genes that augment the solid stem genes inherited from Rescue (Sherman et al., 2010; Talbert et al., 2014; Varella, Weaver, et al., 2019; Varella, Zhang, et al., 2019). Outcomes from this research include the identification of a novel source of solid stem WSS resistance in the spring wheat variety “Conan” (Sherman et al., 2010; Talbert et al., 2014).…”

Section: Introductionmentioning

confidence: 99%

Evaluation of wheat stem sawfly‐resistant solid stem Qss.msub‐3BL alleles in hard red winter wheat

et al. 2023

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Host plant resistance provided by solid stems has been the most effective means for mitigating wheat stem sawfly (WSS) (Cephus cinctus Norton) damage in spring and winter wheat (Triticum aestivum L.). The solid stem trait originates from the spring wheat cultivar “Rescue” and is associated with a quantitative trait locus allele Qss.msub‐3BL.b that explains the majority of the variation for stem solidness. Recently, a new Qss.msub‐3BL solid stem allele, designated Qss.msub‐3BL.c, was identified in the spring wheat cultivar “Conan”. It produces a solid stem phenotype early in plant development but dissipates during plant growth. The Qss.msub‐3BL.c allele provides effective WSS resistance in spring wheat but has not been tested in winter wheat. To examine if the Qss.msub‐3BL.c allele provides adequate WSS resistance in winter wheat, near‐isogenic lines (NILs) were developed using marker‐assisted backcrossing. This enabled comparisons between the hollow stem Qss.msub‐3BL.a, solid stem Qss.msub‐3BL.b and solid stem Qss.msub‐3BL.c alleles for stem solidness, WSS resistance, and agronomic traits in Montana growing environments. Compared to the hollow stem allele, the NILs with the Qss.msub‐3BL.c allele increased stem solidness and reduced WSS stem cutting. However, the Qss.msub‐3BL.c allele resulted in lower solid stem scores and greater WSS stem cutting compared to the Qss.msub‐3BL.b allele. Overall, these findings indicate that the Qss.msub‐3BL.c allele failed to provide sufficient WSS resistance in the winter wheat backgrounds tested in this study.

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Advances in Molecular Markers and Their Use in Genetic Improvement of Wheat

Kumar

Mir

et al. 2020

Physiological, Molecular, and Genetic Perspectives of Wheat Improvement

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Analysis of recombinant inbred line populations derived from wheat landraces to identify new genes for wheat stem sawfly resistance

Cited by 8 publications

References 49 publications

Stability analysis of stem solidness, grain yield, and grain protein concentration in spring wheat

Stability analysis of stem solidness, grain yield, and grain protein concentration in spring wheat

Evaluation of wheat stem sawfly‐resistant solid stem Qss.msub‐3BL alleles in hard red winter wheat

Advances in Molecular Markers and Their Use in Genetic Improvement of Wheat

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