Changes in Number and Weight of Wheat and Triticale Grains to Manipulation in Source-Sink Relationship

Ballesteros-Rodríguez, E.; Martínez-Rueda, Carlos Gustavo; Morales-Rosales, Edgar Jesús; Estrada-Campuzano, Gaspar; González, Fernanda G

doi:10.1155/2019/7173841

Cited by 8 publications

(3 citation statements)

References 27 publications

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“…Several studies have suggested that GY is predominately sink-limited (Reynolds et al 2005;Fischer 2007;Miralles and Slafer 2007;Zhang et al 2010). As such, increases in GY have mainly been conferred by increasing the number of seeds per area rather than increasing individual KWT (Bustos et al 2013;Philipp et al 2018;Ballesteros-Rodríguez et al 2019).…”

Section: Electronic Supplementary Materialsmentioning

confidence: 99%

Allelic response of yield component traits to resource availability in spring wheat

et al. 2020

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Key message Investigation of resource availability on allele effects for four yield component quantitative trait loci provides guidance for the improvement of grain yield in high and low yielding environments. Abstract A greater understanding of grain yield (GY) and yield component traits in spring wheat may increase selection efficiency for improved GY in high and low yielding environments. The objective of this study was to determine allelic response of four yield component quantitative trait loci (QTL) to variable resource levels which were manipulated by varying intraspecific plant competition and seeding density. The four QTL investigated in this study had been previously identified as impacting specific yield components. They included QTn.mst-6B for productive tiller number (PTN), WAPO-A1 for spikelet number per spike (SNS), and QGw.mst-3B and TaGW2-A1 for kernel weight (KWT). Near-isogenic lines for each of the four QTL were grown in multiple locations with three competition (border, no-border and space-planted) and two seeding densities (normal 216 seeds m −2 and low 76 seeds m −2 ). Allele response at QTn.mst-6B was driven by changes in resource availability, whereas allele response at WAPO-A1 and TaGW2-A1 was relatively unaffected by resource availability. The QTn. mst-6B.1 allele at QTn.mst-6B conferred PTN plasticity resulting in significant GY increases in high resource environments. The gw2-A1 allele at TaGW2-A1 significantly increased KWT, SNS and GPC offering a source of GY improvement without negatively impacting end-use quality. QGw.mst-3B allelic variation did not significantly impact KWT but did significantly impact SPS. Treatment effects in both experiments often resulted in significant positive impacts on GY and yield component traits when resource availability was increased. Results provide guidance for leveraging yield component QTL to improve GY performance in high-and low-yield environments.

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Section: Electronic Supplementary Materialsmentioning

confidence: 99%

Allelic response of yield component traits to resource availability in spring wheat

et al. 2020

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“…Modern cultivars of triticale can be used for ethanol production [9,10]. Triticale combines good quality of grain with high levels of protein and lysine and is productive with low input requirements, is less susceptible to the common fungal diseases of cereals and has better adaptation to waterlogged soils, alkaline and acid soils, and nutrient deficient soils than other cereals [11][12][13][14][15][16]. However, winter and spring triticale grain yield production have not yet been assessed broadly across an array of environments, genotypes and managements in Poland [17][18][19].…”

Section: Introductionmentioning

confidence: 99%

Long-Term Yield Variability of Triticale (×Triticosecale Wittmack) Tested Using a CART Model

Wójcik‐Gront

Studnicki

2021

Agriculture

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Triticale is a promising food crop that combines the yield potential and grain quality of wheat with the disease and environmental tolerance of rye. The objective of this study was to evaluate the impact of genotype, environment and crop management on spring and winter triticale yield variability, using data from 31 locations across the whole of Poland, from 2009 to 2017, with the Classification and Regression Tree (CART) analysis. It was found that CART is able to detect differences in spring and winter triticale successful growth. The yield variability of spring triticale was more dependent on the soil quality than winter triticale because of a shorter cycle duration, which increases sensitivity to nutrient supply and weather conditions. Spring triticale also needs to be sown as soon as possible to ensure a successful establishment. A strong dependence of yield variability on the availability of water for the winter triticale was observed. When growing winter triticale in Poland, with periodic excess water especially during autumn and early spring, the use of fungicides and growth regulators should be taken into account.

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“…Also, sink-source relationships could be diverse in the four species due to differences in leaf size and carbon assimilation (source), and spike size and grain number per spike (sink). There is evidence that triticale has a higher leaf photosynthetic rate, number of grains per spike [3], and produces more biomass, which are all associated with higher radiation use efficiency than bread wheat [44]. In rainfed environments in southern Australia, barley has faster development and biomass accumulation [45], and relative to triticale and wheat is the first to reach the double ridge, anthesis and physiological maturity stages [46].…”

Section: Introductionmentioning

confidence: 99%

Carbohydrate and Amino Acid Dynamics during Grain Growth in Four Temperate Cereals under Well-Watered and Water-Limited Regimes

et al. 2021

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Grain development in cereals depends on synthesis and remobilisation compounds such as water-soluble carbohydrates (WSCs), amino acids (AAs), minerals and environmental conditions during pre- and post-anthesis. This study analyses the impact of water stress on metabolite (WSCs, AAs and nitrogen) dynamics between the source (leaves and stems) and sink (grain) organs in triticale, bread wheat, durum wheat and barley. Plants were grown in glasshouse conditions under well-watered (WW) and water-limited (WL) regimes (from flag leaf fully expanded until maturity). The results showed that the stem WSC content and the apparent mobilisation of WSC to the grain were much higher in triticale and were associated with its larger grain size and grain number. In the four cereals, grain weight and the number of kernels per spike were positively associated with stem WSC mobilisation. After anthesis, the AA concentration in leaves was much lower than in the grain. In grain, the main AAs in terms of concentration were Asn, Pro and Gln in triticale, bread, and durum wheat, and Asn, Pro and Val in barley. The water-limited regime reduced grain weight per plant in the four cereal species, but it had no clear effects on WSC content and AAs in leaves and grain. In general, triticale was less affected by WL than the other cereals.

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Changes in Number and Weight of Wheat and Triticale Grains to Manipulation in Source-Sink Relationship

Cited by 8 publications

References 27 publications

Allelic response of yield component traits to resource availability in spring wheat

Allelic response of yield component traits to resource availability in spring wheat

Long-Term Yield Variability of Triticale (×Triticosecale Wittmack) Tested Using a CART Model

Carbohydrate and Amino Acid Dynamics during Grain Growth in Four Temperate Cereals under Well-Watered and Water-Limited Regimes

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