Greater Biomass Accumulation at Anthesis Increases Nitrogen Use Efficiency in Winter Wheat

Brasier, Kyle; Oakes, Joseph; Balota, Maria; Thomason, Wade E.; Griffey, Carl A.

doi:10.2134/agronj2018.10.0693

Cited by 12 publications

(10 citation statements)

References 67 publications

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“…This was not the case for aboveground N yield in the present study where the significant interactions between genotype and testing environment supported the need for testing in diverse environments. This result was not observed in a recent study of grain faba bean sampled at harvest maturity (Allito et al, 2020), but similar findings have been reported in other grain and cover crop species at the flowering stage including winter wheat (Triticum aestivum L.) (Brasier et al, 2019) and common bean (Phaseolus vulgaris L.) (Barbosa et al, 2018). Surprisingly, Ndfa was only significantly affected by testing environment in the present study, whereas previous investigations reported significant genotypic variation for this trait in small faba bean panels (Duc et al, 1988;Nebiyu et al, 2014).…”

Section: ) Recent Grain Faba Bean Breeding Efforts In the Pacificsupporting

confidence: 83%

A multi‐environment analysis of winter faba bean germplasm for cover crop traits

et al. 2021

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Faba bean (Vicia faba L.) cultivars for cover cropping have remained unchanged in the western United States over the past century. Although breeding efforts have improved grain production across much of the world, improvement of the crop for cover crop applications (e.g., biomass production at the flowering stage) remains understudied. Therefore, a trial of nine newly developed faba bean lines from the USDA‐ARS and four commercial checks (‘Bell Bean’, ‘V4’, ‘V5’, and ‘Windsor’) was established to evaluate cover crop traits across six diverse testing environments. The experiment revealed significant genotype × environment interactions for winter vigor, nitrogen (N) concentration, and aboveground N yield. Significant genotypic variation was observed for important cover crop traits including winter vigor, spring vigor, aboveground biomass, and aboveground N yield, whereas variation for percentage of N derived from the atmosphere was primarily determined by the testing environment. The study also identified a strong association between early plant vigor and aboveground biomass (r = .71), which offers potential increases in breeding efficiencies. In addition, advanced faba bean lines from the USDA‐ARS were shown to produce twice the biomass of Bell Bean across testing environments, and faba bean line PS18301 produced at least 20% more aboveground N yield in five out of the six environments than the conventionally used cover crop cultivars Windsor and Bell Bean. Faba bean lines in this study may be used by cover crop breeders as parent materials.

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Section: ) Recent Grain Faba Bean Breeding Efforts In the Pacificsupporting

confidence: 83%

A multi‐environment analysis of winter faba bean germplasm for cover crop traits

et al. 2021

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“…At the reduced N rate, NUpE was 107% compared to 80-81% for the three full-rate N treatments, indicating that when fertilizer N rates are low, the plant is more efficient in utilizing fertilizer N and soil N reserves (Table 3). This is commonly reported in the literature (Brasier et al, 2019). Similar to total N uptake, there were no differences in NUpE between the standard N treatment and the ESN blend or the split N application treatments.…”

Section: Nitrogen and Plant Growth Regulator Managementsupporting

confidence: 86%

“…Brasier et al. (2019) reported a significant positive correlation ( r = .63) between DTA and NUpE in winter wheat. This may have been the case at the Carman19, however, in our study, when combined across all site‐years and treatments there was a significant negative correlation between NUpE and DTA ( r = –.36) (Table 5).…”

Section: Resultsmentioning

confidence: 95%

“…One of the reasons for the high NUpE at Carman19 could be the significant increase of 1.5-4.1 days to anthesis (DTA) at this site-year compared with the other site-years (Supplemental Table S3), a result of low early-season temperatures at this site-year. Brasier et al (2019) reported a significant positive correlation (r = .63) between DTA and NUpE in winter wheat. This may have been the case at the Carman19, however, in our study, when combined across all site-years and treatments there was a significant negative correlation between NUpE and DTA (r = -.36) (Table 5).…”

Section: Site-yearmentioning

confidence: 90%

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Maximizing spring wheat productivity in the eastern Canadian Prairies II. Grain nitrogen, grain protein, and nitrogen use

et al. 2022

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The marketability of spring wheat (Triticum aestivum L.) across the Canadian prairies is largely dependent on grain protein content. New high‐yielding cultivars require a large investment in fertilizer N to achieve milling quality standards. When high rates of N fertilizer are applied, N use efficiencies tend to decrease, lowering returns on investment. The objectives of this study were to identify patterns of N use for spring wheat cultivars and how they are influenced by agronomic management practices. Field trials were conducted in 2018 and 2019 in Manitoba, Canada, to evaluate N uptake timing, N remobilization from vegetative tissue and the resulting grain N yield and protein content. Three spring wheat cultivars were evaluated using five N fertilizer treatments with and without an application of a plant growth regulator (PGR). When high N rates were applied, average N use efficiency, for grain N production, was 60%. On average 21–36% of N uptake occurred after anthesis and this portion was highly dependent on late‐season precipitation. Targeting increases in early season N accumulation and grain‐fill remobilization, to produce optimal grain N levels, may be used to managing risk associated with unknown precipitation during the growing season. Cultivars tested produced similar grain N levels through fundamentally different N use patterns, indicating that there may be opportunity for breeding programs to target N use patterns that best fit environmental conditions of the Canadian prairies to maximize grain N production.

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“…Selection based on physiological traits associated with N response may increase genetic gains through more targeted breeding (Gaju et al, 2011). Building on this application of physiology theory, recent investigations of NUE in winter wheat have identified significant trait associations with NUE across N rates including NUtE (Cormier et al, 2013) and aboveground biomass (Brasier et al 2019;Hitz et al, 2017). Similar findings were observed in the present study, where aboveground biomass at maturity was significantly associated with grain yield when 67 kg N ha −1 was applied in Study II and both N rates were applied in Study III.…”

Section: Traits Underlying Variation In Nuementioning

confidence: 99%

Genotypic variation and stability for nitrogen use efficiency in winter wheat

et al. 2020

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Wheat (Triticum aestivum L.) products account for a large portion of the total dietary calories and protein consumed globally, thus requiring efficient N management systems for optimal grower profitability and to reduce negative environmental impacts of nontarget fertilization. This investigation sought to evaluate genotypic variation for N use efficiency (NUE), assess yield stability, and validate traits for improvement of crop performance across N rates. Three separate studies were conducted over four growing seasons in the eastern United States that varied in the number of N rates and site‐seasons. Study I was conducted using five N rates over three site‐seasons, Study II was conducted using three N rates over six site‐seasons, and Study III was conducted using two N rates over nine site‐seasons. Genotype × N rate interactions were more frequently observed for grain yield when three or more N rates were used in the experimental design. The three studies identified significant genotypic variation for NUE and identified wheat lines that consistently expressed high grain yields over N‐site‐seasons. Aboveground biomass at physiological maturity was strongly associated with grain yield in Study II when 67 kg N ha−1 (r = .66, P ≤ .05) was applied and in Study III when 67 kg N ha−1 (r = .71, P ≤ .05), and 134 kg N ha−1 (r = .89, P < .001) was applied. Findings from this investigation inform soft red winter wheat breeders on diverse sources of breeding materials and target traits to improve NUE.

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Greater Biomass Accumulation at Anthesis Increases Nitrogen Use Efficiency in Winter Wheat

Cited by 12 publications

References 67 publications

A multi‐environment analysis of winter faba bean germplasm for cover crop traits

A multi‐environment analysis of winter faba bean germplasm for cover crop traits

Maximizing spring wheat productivity in the eastern Canadian Prairies II. Grain nitrogen, grain protein, and nitrogen use

Genotypic variation and stability for nitrogen use efficiency in winter wheat

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