Variation in developmental patterns among elite wheat lines and relationships with yield, yield components and spike fertility

González-Navarro, Oscar E.; Griffiths, Simon; Molero, Gemma; Reynolds, M.P.; Slafer, Gustavo A.

doi:10.1016/j.fcr.2016.07.019

Cited by 39 publications

(38 citation statements)

References 72 publications

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“…In wheat and barley, the greatest potential to establish increased seed number from an individual inflorescence is during the period of the reproductive phase in which spikelet initiation has ended, floret differentiation has begun, and floret death is yet to occur (Alqudah et al ). Therefore, factors that influence the duration of the reproductive phase are likely to have a significant impact on both the size and number of seed (Gonzalez‐Navarro et al ). The timing of these phases is undoubtedly due to the interplay of many regulatory factors, of which phytohormones are prime candidates as organizers.…”

Section: Variation In Reproductive Development and Possible Roles Formentioning

confidence: 99%

Translating auxin responses into ovules, seeds and yield: Insight from Arabidopsis and the cereals

Shirley

Aubert

Wilkinson

et al. 2019

JIPB

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Grain production in cereal crops depends on the stable formation of male and female gametes in the flower. In most angiosperms, the female gamete is produced from a germline located deep within the ovary, protected by several layers of maternal tissue, including the ovary wall, ovule integuments and nucellus. In the field, germline formation and floret fertility are major determinants of yield potential, contributing to traits such as seed number, weight and size. As such, stimuli affecting the timing and duration of reproductive phases, as well as the viability, size and number of cells within reproductive organs can significantly impact yield. One key stimulant is the phytohormone auxin, which influences growth and morphogenesis of female tissues during gynoecium development, gametophyte formation, and endosperm cellularization. In this review we consider the role of the auxin signaling pathway during ovule and seed development, first in the context of Arabidopsis and then in the cereals. We summarize the gene families involved and highlight distinct expression patterns that suggest a range of roles in reproductive cell specification and fate. This is discussed in terms of seed production and how targeted modification of different tissues might facilitate improvements.

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Section: Variation In Reproductive Development and Possible Roles Formentioning

confidence: 99%

Translating auxin responses into ovules, seeds and yield: Insight from Arabidopsis and the cereals

Shirley

Aubert

Wilkinson

et al. 2019

JIPB

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“…It is well documented that significant associations exist between plant development and various yield components (Fischer, 1985;Rawson, 1994, 1996;Slafer, 2001, 2002;Araus et al, 2002;González et al, 2003aGonzález et al, , 2003bReynolds et al, 2009;García et al, 2011;Dreccer et al, 2014;González-Navarro et al, 2015, 2016. The early developmental phases were more sensitive to weather conditions than the later ones, the turning point being around the booting stage.…”

Section: Discussionmentioning

confidence: 99%

“…The length of the various developmental phases is an important factor determining the extent to which the yield potential of a genotype can be achieved under a given set of ecological conditions (Slafer and Rawson, 1996;Araus et al, 2002;González et al, 2005;McMaster, 2005;Borràs et al, 2009;Chen et al, 2009;Foulkes et al, 2011). A longer vegetative phase generates more biomass (due to the longer nutrient storage period), and an extended stem elongation phase is required to achieve a higher number of fertile florets or spikelets, whereas a longer grainfilling period may lead to increased grain weight in the spikes (Kirby, 1988;Slafer and Rawson, 1996;Slafer, 2001, 2002;Araus et al, 2002;González et al, 2002González et al, , 2003aGonzález et al, , 2005Kiss et al, 2011;Dreccer et al, 2014;González-Navarro et al, 2015, 2016. The later timing of stem elongation helps to avoid frost damage in early spring, whereas earlier maturity helps to avoid hot dry weather during summer.…”

Section: Introductionmentioning

confidence: 99%

Comparative Study of the Developmental Traits and Yield Components of Bread Wheat under Field Conditions in Several Years of Multi‐Sowing Time Experiments

et al. 2019

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The main aim of the experiments was to demonstrate the possible correlation between developmental and morphological traits and yield components under variable climatic conditions. For this purpose, a collection of 188 wheat (Triticum aestivum L.) genotypes with a heterogeneous gene pool was included in a 3‐yr field experiment applying normal and late sowing dates each year. Under these conditions, almost all the traits were significantly influenced by the genotype, which had the greatest effect on the morphological traits and yield components (explaining 20–58 and 50–60% of the phenotypic variance for the two trait groups, respectively). In the case of plant development, however, the year effect, particularly in the late sowing treatment, was more significant than that of the genotype. Sowing date had the strongest effect on the early developmental phases, explaining 50% of the phenotypic variance, whereas the year had a significant influence on the late developmental phases, being responsible for 37 to 53% of the phenotypic variance. The turning point between the two factors was during the first phase of rapid stem elongation. The environmental driven variation in developmental patterns led to significant variation in yield‐related traits, which ranged from 4.6 (average thousand‐kernel weight) to 16.3% (average seed number) with normal sowing, and from 2.9 (average seed weight) to 29.4% (average thousand‐kernel weight) under late sowing conditions. The significance of the two intervals, from sowing to the start of rapid (intensive) stem elongation and from the start of stem elongation to the boot stage (Z49), was most apparent in the case of yield‐related traits.

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“…The impact of the introduction of alien chromosomes from related species on the development of the spikes and spikelets of wheat has been previously reported [Gonzalez-Navarro et al, 2016]. Zhang et al [2015] identified 3 wheat-D. villosum T2VS.2DL translocation lines which displayed long spikes, and then mapped the spike lengthrelated genes onto D. villosum 2VS.…”

Section: Discussionmentioning

confidence: 99%

Characterization of New Wheat-<b><i>Dasypyrum breviaristatum</i></b> Introgression Lines with Superior Gene(s) for Spike Length and Stripe Rust Resistance

Wang

Yü

et al. 2018

Cytogenet Genome Res

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Dasypyrum breviaristatum (genome V^bV^b) contains potentially important traits for commercial wheat production. Chromosome 2V^b of D. breviaristatum carries several desirable agronomic characters, including long spike length as well as enhanced resistance to stripe rust, which are expressed in a common wheat background. In this study, wheat-D. breviaristatum 2V^b deletion lines were produced and identified by fluorescence in situ hybridization (FISH), and 74 molecular markers specific to D. breviaristatum chromosome 2V^b were physically localized in 4 distinct chromosomal regions. New wheat-D. breviaristatum 2V^b translocation lines were also characterized by FISH. The breakpoint of the translocation T3AS.3AL-2V^bS was determined by physically mapped molecular markers. Field evaluation revealed that genes affecting plant height and spike length are located on fraction length (FL) 0.65-1.00 of 2V^bS, while the stripe rust resistance gene(s) are located on FL 0.40-1.00 of D. breviaristatum chromosome 2V^bL. The newly characterized wheat-Dasypyrum chromosomal introgressions are of potential value for the improvement of the yield and disease resistance of wheat.

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Variation in developmental patterns among elite wheat lines and relationships with yield, yield components and spike fertility

Cited by 39 publications

References 72 publications

Translating auxin responses into ovules, seeds and yield: Insight from Arabidopsis and the cereals

Translating auxin responses into ovules, seeds and yield: Insight from Arabidopsis and the cereals

Comparative Study of the Developmental Traits and Yield Components of Bread Wheat under Field Conditions in Several Years of Multi‐Sowing Time Experiments

Characterization of New Wheat-<b><i>Dasypyrum breviaristatum</i></b> Introgression Lines with Superior Gene(s) for Spike Length and Stripe Rust Resistance

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