Changing times: Opportunities for altering winter wheat phenology

Sheehan, Hester; Bentley, Alison R.

doi:10.1002/ppp3.10163

Cited by 19 publications

(11 citation statements)

References 49 publications

(90 reference statements)

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“…However, further work is required to understand the actual impact of a 1–2 reduction in DTH and the mitigation of late season (as well as mid‐season) stress response. Shorter crop duration may also become increasingly useful to farmers in Afghanistan from the viewpoint of improving crop production logistics (Sheehan & Bentley, 2020).…”

Section: Discussionmentioning

confidence: 99%

Plant breeding increases spring wheat yield potential in Afghanistan

Sharma

Crossa

Ataei³

et al. 2021

Crop Science

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Wheat (Triticum aestivum L.) is an essential food security crop in Afghanistan. To determine the contribution of wheat breeding to increasing productivity, we analyzed data obtained from 192 trials conducted over 11 locations from 2002–2003 to 2015–2016. Using this data, we estimated annual genetic gains for grain yield, days to heading and plant height over the 14‐yr period. We used best linear unbiased estimates to measure genetic gains across CIMMYT Elite Spring Wheat Yield Trials per se and for the top 5 and top 10% performing genotypes relative to checks. Mean realized genetic gain for grain yield was 115 kg ha–1 yr−1, whereas the top 10 genotypes achieved annual yield gains of 123 kg ha–1. The continually replaced local check s also contributed an annual genetic gain for yield of 107 kg ha–1. The associated adaptive traits days to heading and plant height varied in their response over time with the top 10 yielding genotypes having a 1.82 d annual reduction in heading date while plant height increased by 0.77 cm yr−1 for the same set of genotypes. Results show that continual breeding improvements confer yield gains, contributing to increasing Afghan wheat productivity. This has wider relevance for demonstrating the value of continued investment in public sector plant breeding supporting wheat production and food security in Central Asia.

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Section: Discussionmentioning

confidence: 99%

Plant breeding increases spring wheat yield potential in Afghanistan

Sharma

Crossa

Ataei³

et al. 2021

Crop Science

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“…In recent years, breeding efforts have targeted increase in wheat yield potential to meet the growing food demand resulting from global population explosion, climate change, and reduction in arable land area ( Mondal et al, 2013 ; Chen et al, 2016 ). Certain adverse factors, such as Fusarium head blight, powdery mildew, and rust infection, high temperature, frost damage, excessive rainfall, and preharvest sprouting, are liable to occur during the mid to late wheat-growing season and comprise the primary causes of reduction in wheat yield and quality ( Iqbal et al, 2006 ; Mahdiyeh and Bahram, 2012 ; Sheehan and Bentley, 2020 ). Exploitation of new early maturation genes and the breeding of early maturing wheat cultivars are strategies proven to be effective against these emerging threats to agricultural production and are suitable for a double-cropping management system, in which earlier sowing of the following crop improves the probability of its success ( Hunger et al, 2014 ; Su et al, 2018 ).…”

Section: Introductionmentioning

confidence: 99%

Identification of a Wheat-Psathyrostachys huashanica 7Ns Ditelosomic Addition Line Conferring Early Maturation by Cytological Analysis and Newly Developed Molecular and FISH Markers

Tan

Zhao

et al. 2021

Front. Plant Sci.

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Early maturation is an important objective in wheat breeding programs that could facilitate multiple-cropping systems, decrease disaster- and disease-related losses, ensure stable wheat production, and increase economic benefits. Exploitation of novel germplasm from wild relatives of wheat is an effective means of breeding for early maturity. Psathyrostachys huashanica Keng f. ex P. C. KUO (2n=2x=14, NsNs) is a promising source of useful genes for wheat genetic improvement. In this study, we characterized a novel wheat-P. huashanica line, DT23, derived from distant hybridization between common wheat and P. huashanica. Fluorescence in situ hybridization (FISH) and sequential genomic in situ hybridization (GISH) analyses indicated that DT23 is a stable wheat-P. huashanica ditelosomic addition line. FISH painting and PCR-based landmark unique gene markers analyses further revealed that DT23 is a wheat-P. huashanica 7Ns ditelosomic addition line. Observation of spike differentiation and the growth period revealed that DT23 exhibited earlier maturation than the wheat parents. This is the first report of new earliness per se (Eps) gene(s) probably associated with a group 7 chromosome of P. huashanica. Based on specific locus-amplified fragment sequencing technology, 45 new specific molecular markers and 19 specific FISH probes were developed for the P. huashanica 7Ns chromosome. Marker validation analyses revealed that two specific markers distinguished the Ns genome chromosomes of P. huashanica and the chromosomes of other wheat-related species. These newly developed FISH probes specifically detected Ns genome chromosomes of P. huashanica in the wheat background. The DT23 line will be useful for breeding early maturing wheat. The specific markers and FISH probes developed in this study can be used to detect and trace P. huashanica chromosomes and chromosomal segments carrying elite genes in diverse materials.

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“…Early flowering can also be beneficial due to agronomic considerations, such as the timing and logistics of harvest. Therefore, despite evidence UK wheat varieties released over the last 10 years have an increasingly narrower range of phenology with a much smaller proportion of early varieties currently available (Sheenan & Bentley, 2020), there is still demand for early varieties -which accounted for 14% of certified UK seed weight in 2019 (NIAB TAG, 2020).…”

Section: A Role For Phenology In Glume Yr Resistancementioning

confidence: 99%

Genetic resistance to stripe rust infection of the wheat ear is controlled by genes controlling foliar resistance and flowering time

Bouvet

Berry

Fenwick

et al. 2021

Preprint

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Yellow rust (YR), or stripe rust, is a fungal infection of wheat (Triticum aestivum L.) caused by the pathogen Puccinia striiformis f. sp. tritici (Pst). While much research has focused on YR infection of wheat leaves, we are not aware of reports investigating the genetic control of YR resistance in other wheat structures, such as the ears. Here we use an eight-founder population to undertake genetic analysis of glume YR infection in wheat ears. Five quantitative trait loci (QTL) were identified, each explaining between 3.4% and 6.8% of the phenotypic variation. Of these, three (QYrg.niab-2D.1, QYrg.niab-4D.1 and QYrg.niab-5A.1) co-located with QTL for leaf YR resistance previously identified in the same population. Additional leaf YR resistance QTL previously identified in the population were not detected as controlling glume resistance, with the remaining two glume YR QTL linked to genetic loci controlling flowering time. The first, QYrg.niab-2D. 1, mapped to the major flowering time locus Photoperiod-D1 (Ppd-D1), with the early-flowering allele from the founder Soissons conferring reduced glume YR resistance. The second, QYrg.niab-4A.1, was identified in one trial only, and was located close to a flowering time QTL. This indicates earlier flowering results in increased glume YR susceptibility, likely due to exposure of tissues during environmental conditions more favourable for Pst infection. Collectively, our results provide first insights into the genetic control of YR resistance in glumes, ontrolled by subsets of QTL for leaf YR resistance and flowering time. This work provides specific genetic targets for the control of YR resistance in both the leaves and the glumes, and may be especially relevant in Pst-prone agricultural environments where earlier flowering is favoured.

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Changing times: Opportunities for altering winter wheat phenology

Cited by 19 publications

References 49 publications

Plant breeding increases spring wheat yield potential in Afghanistan

Plant breeding increases spring wheat yield potential in Afghanistan

Identification of a Wheat-Psathyrostachys huashanica 7Ns Ditelosomic Addition Line Conferring Early Maturation by Cytological Analysis and Newly Developed Molecular and FISH Markers

Genetic resistance to stripe rust infection of the wheat ear is controlled by genes controlling foliar resistance and flowering time

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