Identifying quantitative trait loci for lodging‐associated traits in the wheat doubled‐haploid population Avalon × Cadenza

Piñera-Chávez, Francisco J; Berry, Peter; Foulkes, M. J.; Sukumaran, Sivakumar; Reynolds, Matthew

doi:10.1002/csc2.20485

Cited by 14 publications

(14 citation statements)

References 57 publications

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“…This marker maps close to Excalibur_c30739_72, from the low-lodging year (2018), both positioned between Mft-A1 , associated with seed dormancy and pre-harvest sprouting, and TaGIGANTEA ( TaGI ), the latter known to influence development (Zikhali et al 2016 ). The two loci detected on 6A and 6B in the present study appear to map to regions similar to or homoeologous to regions identified by Atkinson et al ( 2015 ) and Piñera-Chavez et al ( 2021 ) on chromosomes 6B and 6D related to rooting attributes, while the two regions identified by Berry and Berry ( 2015 ) on chromosomes 6A and 6B may also be homoeologous. The marker on 6A in our study (BS00071655_51) maps near to a major seed protein locus, Gli- 6A (Halstead-Nussloch et al 2021 ).…”

Section: Discussionsupporting

confidence: 79%

“…The largest two QTL identified in the high lodging 2017 trial were on Chromosome 7D and 5B and map to the same location as QTL for root plate spread in Berry and Berry ( 2015 ) and Piñera-Chavez et al ( 2021 ). The marker on 7D (BobWhite_c8415_728) maps about 22Mbp from Wx-D1 , a locus encoding granule-bound starch synthase which is a key enzyme in amylose synthesis.…”

Section: Discussionmentioning

confidence: 97%

“…The genetic correlation for lodging scores between environments was intermediate in populations in Gregory and Suntop background and low in Spitfire and is also evidence of a complex interaction with the environment. Others have reported significant genotype by environment interactions for lodging in a range of wheat cultivars and populations (Piñera-Chavez et al 2016 , 2021 ).…”

Section: Discussionmentioning

confidence: 98%

“…The difficulty at validating predictions between years supports this hypothesis and the need to carry out independent analyses per year/environment when conditions for lodging are contrasting. Both the studies by Berry and Berry ( 2015 ) and Piñera-Chavez et al ( 2021 ) determined QTL based on mean data across the different environments despite significant GxE in the traits measured. In contrast, studying stem traits linked to lodging in a Chinese recombinant inbred line population, Song et al ( 2021 ) identified 12 major QTL for eight traits, with only five present across different environments, in chromosomes 2D and 4D.…”

Section: Discussionmentioning

confidence: 99%

“…The authors found that the main quantitative trait loci (QTL) effects for lodging resistance were for height, stem diameter, material strength and failure moment (13 QTL), and root plate spread and depth (4 QTL). Further work by Piñera-Chavez et al ( 2021 ) in a subset of lines of the Avalon x Cadenza double haploid mapping population found 16 QTL, including nine for stem-related and two for root-related characteristics. In their study, 49.6% of phenotypic variation in stem strength was explained by QTL on chromosomes 1D and 3B, while 22% of phenotypic variation on root plate spread was explained by a QTL in chromosome 5B.…”

Section: Introductionmentioning

confidence: 95%

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Multi-donor × elite-based populations reveal QTL for low-lodging wheat

Dreccer

Macdonald²,

Farnsworth

et al. 2022

Theor Appl Genet

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Key message Low-lodging high-yielding wheat germplasm and SNP-tagged novel alleles for lodging were identified in a process that involved selecting donors through functional phenotyping for underlying traits with a designed phenotypic screen, and a crossing strategy involving multiple-donor × elite populations. Abstract Lodging is a barrier to achieving high yield in wheat. As part of a study investigating the potential to breed low-lodging high-yielding wheat, populations were developed crossing four low-lodging high-yielding donors selected based on lodging related traits, with three cultivars. Lodging was evaluated in single rows in an early generation and subsequently in plots in 2 years with contrasting lodging environment. A large number of lines lodged less than their recurrent parents, and some were also higher yielding. Heritability for lodging was high, but the genetic correlation between contrasting environments was intermediate-low. Lodging genotypic rankings in single rows did not correlate well with plots. Populations from the highest lodging background were genotyped (90 K iSelect BeadChip array). Fourteen markers on nine chromosomes were associated with lodging, differing under high- versus low-lodging conditions. Of the fourteen markers, ten were found to co-locate with previously identified QTL for lodging-related traits or at homoeologous locations for previously identified lodging-related QTL, while the remaining four markers (in chromosomes 2D, 4D, 7B and 7D) appear to map to novel QTL for lodging. Lines with more favourable markers lodged less, suggesting value in these markers as a selection tool. This study demonstrates that the combination of donor functional phenotyping, screen design and crossing strategy can help identify novel alleles in germplasm without requiring extensive bi-parental populations.

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Section: Discussionsupporting

confidence: 79%

Section: Discussionmentioning

confidence: 97%

Section: Discussionmentioning

confidence: 98%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 95%

See 3 more Smart Citations

Multi-donor × elite-based populations reveal QTL for low-lodging wheat

Dreccer

Macdonald²,

Farnsworth

et al. 2022

Theor Appl Genet

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Variation in mycorrhizal growth response among a spring wheat mapping population shows potential to breed for symbiotic benefit

Thirkell

Grimmer

James

et al. 2022

Food and Energy Security

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All cereal crops engage in arbuscular mycorrhizal symbioses which can have profound, but sometimes deleterious, effects on plant nutrient acquisition and growth. The mechanisms underlying variable mycorrhizal responsiveness in cereals are not well characterised or understood. Adapting crops to realise mycorrhizal benefits could reduce fertiliser requirements and improve crop nutrition where fertiliser is unavailable. We conducted a phenotype screen in wheat (Triticum aestivum L.), using 99 lines of an Avalon × Cadenza doubled‐haploid mapping population. Plants were grown with or without a mixed inoculum containing 5 species of arbuscular mycorrhizal fungi. Plant growth, nutrition and mycorrhizal colonisation were quantified. Plant growth response to inoculation was remarkably varied among lines, ranging from more than 30% decrease to 80% increase in shoot biomass. Mycorrhizal plants did not suffer decreasing shoot phosphorus concentration with increasing biomass as observed in their non‐mycorrhizal counterparts. The extent to which mycorrhizal inoculation was beneficial for individual lines was negatively correlated with shoot biomass in the non‐mycorrhizal state but was not correlated with the extent of mycorrhizal colonisation of roots. Highly variable mycorrhizal responsiveness among closely related wheat lines and the identification of several QTL for these traits suggests the potential to breed for improved crop‐mycorrhizal symbiosis.

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Impacts of aphid herbivory on mycorrhizal growth responses across three cultivars of wheat

Charters

Durant

Sait

et al. 2022

Plants People Planet

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Societal Impact StatementThe Earth's population is projected to rise to 9.7 billion by 2050 resulting in mounting pressure to increase agricultural yields in a sustainable manner. Arbuscular mycorrhizal (AM) fungi may be important players in this agricultural transition given their capacity to improve soil and plant health. Benefits gained by crops hosting AM fungi can be cultivar-specific and also affected by insect herbivory, although the combined effect of these factors remains unclear. Here, we show that, in an economically and socially significant tri-partite system, there is interplay between crop cultivar, AM colonisation and aphid herbivory on plant growth and nutritional status. Summary• Arbuscular mycorrhizal (AM) fungi are critical components of the rhizosphere across nearly all terrestrial biomes. AM fungi associate with most plants, including major crops, usually increasing plant access to soil nutrients and enhancing defence against pests and pathogens in return for photosynthetic carbon (C).

show abstract

Identifying quantitative trait loci for lodging‐associated traits in the wheat doubled‐haploid population Avalon × Cadenza

Cited by 14 publications

References 57 publications

Multi-donor × elite-based populations reveal QTL for low-lodging wheat

Multi-donor × elite-based populations reveal QTL for low-lodging wheat

Variation in mycorrhizal growth response among a spring wheat mapping population shows potential to breed for symbiotic benefit

Impacts of aphid herbivory on mycorrhizal growth responses across three cultivars of wheat

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