Winter wheat genotypes under different levels of nitrogen and water stress: Changes in grain protein composition

Pierre, Carolina Saint; Peterson, C. J.; Ross, Andrew S.; Ohm, Jae‐Bom; Verhoeven, M.; Larson, Milton B.; Hoefer, Bruce

doi:10.1016/j.jcs.2007.05.007

Cited by 89 publications

(82 citation statements)

References 39 publications

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“…FP and SDSS significantly increased when passing from no stress to drought or heat stress conditions. These results are in agreement with previous studies (Ozturk and Aydin, 2004;Saint Pierre et al, 2008;Tahir et al, 2006). Increased protein content may be due to higher rates of grain nitrogen accumulation and/or to lower rates of carbohydrate accumulation under stress conditions (Panozzo and Eagles, 1999).…”

Section: Effects Of Drought and Heat Stresssupporting

confidence: 93%

“…A number of studies have shown that protein content and SDS sedimentation volume, a gluten quality-related parameter, increase in water-stressed environments (Flagella et al, 2010;Ozturk and Aydin, 2004;Saint Pierre et al, 2008). Saint Pierre et al (2008) found that monomeric protein increased, while polymeric protein and mixograph parameters showed no significant change under reduced irrigation. However, under dryland conditions, Panozzo et al (2001) found a significant increase in the size distribution of polymeric glutenin and no significant change in the glutenin-to-gliadin ratio.…”

Section: Introductionmentioning

confidence: 99%

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The influence of drought and heat stress on the expression of end-use quality parameters of common wheat

Hernández-Espinosa

et al. 2013

Journal of Cereal Science

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Section: Effects Of Drought and Heat Stresssupporting

confidence: 93%

Section: Introductionmentioning

confidence: 99%

The influence of drought and heat stress on the expression of end-use quality parameters of common wheat

Hernández-Espinosa

et al. 2013

Journal of Cereal Science

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“…One explanation for differences in remobilization efficiency is that during the grain-filling period, the plant retains some of the dry matter accumulated at anthesis for survival and various biological functions, while the remainder is available for remobilization. It appears that the amount of retained dry matter depends on the cultivars and prevailing growth conditions, although genetic variability in dry matter remobilization has been reported (Reynolds & Trethowan 2007;Saint Pierre et al 2008). Remobilization efficiencies in this study are considerably greater than those reported by Papakosta & Gagianas (1991).…”

Section: Remobilization Of Dry Matter In Wheat 283contrasting

confidence: 52%

Remobilization of dry matter in wheat: effects of nitrogen application and post-anthesis water deficit during grain filling

Bahrani

Abad

Sarvestani

et al. 2011

New Zealand Journal of Crop and Horticultural Science

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Pre-anthesis stored dry matter in wheat (Triticum aestivum L.) is important in a Mediterranean climate because grain filling greatly depends on the remobilization of pre-anthesis assimilates. A water deficit at the post-anthesis stage may increase the dry matter stored before anthesis. This field study assessed the effects of post-anthesis water deficit and the application of nitrogen (N) fertilizer on three wheat cultivars. Data collected over 2 years showed that, in wheat with a post-anthesis water deficit (WD), dry matter remobilization efficiency reached its maximum (29%) at 80 kg N ha(1 , but further additions of N decreased it. The contribution of remobilized dry matter to a grain ranged from 7% to 23% of the grain's dry weight and, in WD grain, was 78% more than that of well-watered (WW) grain. Grain from plots on which fertilizer had been applied had a lower proportion of remobilized dry matter than did grain from unfertilized plots. For grain from adequately fertilized treatments, limited irrigation was associated with reduced dry matter remobilization. The amount of non-structural carbohydrates (NSC) remaining in parts of the plant was much greater in the WW than in the WD treatments. The 160 kg N ha (1 treatment also left more NSC unused than did the no N treatment. The active grain-filling period was shortened substantially by a water deficit, but this was countered by the application of 160 kg N ha (1 . Grain-filling rates for all cultivars or all N treatments were increased by inducing a water deficit. For WD grains, kernel weight was reduced when fertilizer application rates were 0Á80 kg N ha (1 , but increased when rates were 160 kg N ha(1 , unlike WW grain exposed to similar fertilizer regimes. The grain yield of WD wheat was reduced by 25%, and that of grain receiving no fertilizer was 15% lower than that receiving 80 kg N ha (1 . Among three wheat cultivars, cv. Chamran produced the highest grain yield (19% higher than that of either cv. Shiraz or cv. Marvdasht). It was concluded that the stored carbohydrate had provided an important buffer against water stress during grain filling, in terms of yield.

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“…Moreover, gliadin content was stable across the year for calcium nitrate while increased for urea in 2012; glutenins significantly lowered by 27 and 49% for urea and calcium nitrate, respectively, in 2012. Since the maximum rate of synthesis of glutenins is reported to occur later than that of gliadins for the majority of durum wheat modern genotypes, the late water stress occurred in 2012 was more detrimental on the synthesis of glutenins than gliadins (Saint Pierre et al, 2008). As a consequence, the GS/gliadins ratio reduced in 2012 by 40% and 47% for urea and calcium nitrate, respectively.…”

Section: Gluten Proteins Accumulationmentioning

confidence: 99%

Nitrogen fertilisation of durum wheat: a case study in Mediterranean area during transition to conservation agriculture

et al. 2016

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Nitrogen (N) nutrition plays a key role for high yields and quality in durum wheat (Triticum turgidum L. subsp. durum (Desf.) Husn); in Mediterranean environments, data regarding N fertilisation management during the transition phase to conservation agriculture (CA) are limited. The aim of this work was to study the effects of N fertiliser forms and rates on yield and some quality traits of durum wheat, during the transition period to CA in Mediterranean areas; moreover, indication on the recommendable N form/rate combinations have been given. Field trials were carried out in south of Italy, during the first two years of transition to CA (from 2010 to 2012) in a durum wheat-based rotation. Following a split-plot design arranged on a randomised complete blocks with three replications, two N forms (main plots) -urea and calcium nitrate -and four N rates (sub-plots) -50, 100, 150 and 200 kg N ha -1 -plus an un-fertilised Control, were compared. The following parameters were analysed: grain yield, N-input efficiency, grains protein concentration (GPC), total gluten, gluten fractions and minerals concentration in kernels. Calcium nitrate gave the highest yield (4.48 t ha -1 ), as predicted by the quadratic model, at 146 kg N ha -1 , on average. This was particularly noticeable in 2012, when the distribution of rainfall and temperatures regimes as well as residues' status could have favoured such N-form. These results were confirmed by the observed higher values of all indices describing N-input efficiency. High GPC values (14.8%) were predicted at slightly higher N-rates (173 kg N ha -1 , averaging both N forms). In particular, gluten proteins and glutenin/gliadin ratio accrued as the N doses increased, reaching the highest values at 150 kg N ha -1 , also positively affecting the quality of durum wheat flour. Iron and zinc concentrations were noticeably increased (38% and 37% on average) by N supply, probably due to the enhanced water use efficiency under CA systems.Principal component analysis summarised properly the obtained results: analysing the N-rates at 150 kg N ha -1 , it was confirmed that yields and quality characteristics of durum wheat were optimised in the wettest year (2011) with calcium nitrate. Moreover, the scarce amount of residues characterising the transition phase to CA, requires N application rates not lower than 150 kg ha -1 in order to ensure stable yields and important quality traits. These N rates should be modulated as the accumulation of crop residues increases over time, thanks to long-term effects of CA on soil chemical, physical and biological properties. IntroductionSouthern Europe's environment is characterised by cool and wet winters and hot and dry summers with low and erratic rainfall distribution, and by soils with very low organic matter levels and nitrogen (N) content. Nitrogen is subjected to several losses with the main pathways being represented by ammonia volatilisation, denitrification and nitrate leaching (Plaza-Bonil et al., 2014). Moreover, in these environments ...

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Winter wheat genotypes under different levels of nitrogen and water stress: Changes in grain protein composition

Cited by 89 publications

References 39 publications

The influence of drought and heat stress on the expression of end-use quality parameters of common wheat

The influence of drought and heat stress on the expression of end-use quality parameters of common wheat

Remobilization of dry matter in wheat: effects of nitrogen application and post-anthesis water deficit during grain filling

Nitrogen fertilisation of durum wheat: a case study in Mediterranean area during transition to conservation agriculture

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