Genetic variation for nitrogen use efficiency in winter wheat (Triticum aestivum L.)

Gouis, Jacques Le; Pluchard, P.

doi:10.1007/bf00022848

Cited by 27 publications

(10 citation statements)

References 5 publications

(3 reference statements)

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“…In addition, the poor use of supplied N may lead to insufficient N availability for plants at times of peak demand with consequent yield reduction. Genotypes show different behaviour with different levels of available N across sites and growing seasons (Le Gouis and Pluchard 1996;Gallais and Coque 2005;An et al 2006). The two main components of NUE, N uptake efficiency and N utilisation efficiency, should both be taken into account to optimise NUE in plants.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Australian wheat genotypes for response to variable nitrogen application

Mahjourimajd

Kuchel²,

Langridge

et al. 2015

Plant Soil

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Aims The key aim was to assess the genetic variation for nitrogen (N) response and stability in spring wheat germplasm to determine the scope for improvement of nitrogen use efficiency (NUE) under water-limited, low yielding conditions. A further aim was to evaluate NUE stability and NUE-protein yield (PY) as suitable NUErelated traits for selection. Methods The traits measured included grain yield (GY, kg ha) and NUE (kg GY kg −1 N) under varying N applications at all sites, and NUE for protein yield (NUE-PY), harvest index and plant height at some sites.In addition, two of the trials used two seeding rates to provide an assessment of the impact of plant density on NUE.Results Genetic variation was significant for all traits studied. Grain yield was affected by both genotype (G) and N rate and the interaction between the two. Interestingly, harvest index and height showed no direct response to varying N applications. However, for these traits, there was a significant G effect and N response (G × N interaction).Conclusions Increasing N inputs led to variable responses for GY at different sites. Importantly, genetic variation in N response was detected. The information and screening techniques will enable plant breeders to select wheat genotypes that show a consistent response to high N. There is clear scope to improve NUE in spring wheat grown in low yielding environments.

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Section: Introductionmentioning

confidence: 99%

Evaluation of Australian wheat genotypes for response to variable nitrogen application

Mahjourimajd

Kuchel²,

Langridge

et al. 2015

Plant Soil

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“…Different morphophysiological characteristics, associated with both the uptake capacity (NUpE; defined here as a proportion of total N uptake to N availability in the soil) and efficiency of nitrogen utilization in grain mass formation (NUtE; defined here as the grain mass formed per unit of N absorbed), appear to be critical components of NUE (Moll et al 1982;Huggins and Pan 2003). Although numerous reports on genotypic variation in components of N efficiency already suggest potential applications of this genetic knowledge for wheat improvements (Dhugga and Waines 1989;Le Gouis and Pluchard 1996;Ortiz-Monasterio et al 1997;El Bassam 1998;Le Gouis et al 2000;Oracka et al 2000;Górny et al 2006a;Laperche et al 2006a;Kichey et al 2007;Baresel et al 2008;Barraclough et al 2010), relatively fewer attempts have been made to breed wheat for these traits (Van Ginkel et al 2001;Brancourt-Hulmel et al 2005;Löschenberger et al 2008;Wolfe et al 2008).…”

Section: Introductionmentioning

confidence: 99%

Inheritance of the efficiency of nitrogen uptake and utilization in winter wheat (Triticum aestivum L.) under diverse nutrition levels

et al. 2010

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The effects of contrasting soil nitrogen (N) levels on the inheritance of the efficiency of N uptake and N utilization in grain mass formation were examined in winter wheat. Parents of various origins and their diallel F 2 -hybrids were evaluated in field and pot experiments under varying levels of soil N. The range of additive variance in the components of N efficiency was narrow, especially under N shortage. The soil N-treatments imposed had a substantial influence on gene actions responsible for the efficiency components and modes of inheritance. Genotype 9 nutrition interactions were common. Under high N-fertilization, the efficiency components were inherited in a manner favourable for wheat selection (preponderance of additive effects). However, the enhanced contribution of non-additive gene effects and increased dominance under N-limited conditions could impede wheat selection to improve the N efficiency and adaptation to less luxurious fertilization regimes. Selection methods that eliminate masking non-additive influences and take advantage of the additive variance should be employed to improve these traits.

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“…Heterosis for N use efficiency however has rarely been investigated in detail. Le Gouis & Pluchard (1996) and Le Gouis et al (2002) found greater N capture in hybrids with greater grain and biomass yields, but nitrogen utilization efficiency was not explicitly presented and its physiology with relation to heterosis was not explored.…”

Section: Introductionmentioning

confidence: 99%

Heterotic and seed rate effects on nitrogen efficiencies in wheat

Kindred

Gooding

2004

J. Agric. Sci.

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Kindred, D. R., Gooding, M. J. (2004). Heterotic and seed rate effects on nitrogen efficiencies in wheat. Journal of Agricultural Science, 142 (6), 639-657Four field experiments over 2 years investigated whether wheat hybrids had higher nitrogen-use efficiency (NUE) than their parents over a range of seed rates and different N regimes. There was little heterosis for total N in the above-ground biomass (NYt), but there was high-parent heterosis for grain N yields (NYg) in two of the hybrids, Hyno Esta and Hyno Rista, associated with greater nitrogen harvest index (NHI). Overall, the hybrids did not significantly increase the total dry matter produced per unit N in the above-ground crop (NUtEt), but did increase the grain dry matter per unit N in the above ground crop (NUtEg). The improvement in NUtEg was at the partial detriment of grain N concentration. Heterosis for grain NYg in Hyno Esta was lower at zero-N, suggesting that it did not achieve higher yields through more efficient capture or utilization of N. The greater NHI in Hyno Esta appeared to be facilitated by both greater N uptake, and remobilization of N from vegetative tissues, after anthesis. The response of N efficiency and uptake to seed rate was dependent on N supply and season. Where N fertilizer was applied, N uptake over time was slower at the lower seed rates, but where N was withheld N capture at the lowest seed rate soon approached the N capture of the higher seed rates. During grain filling, the rate of accumulation of N into the grain increased with seed rate and the duration of N accumulation decreased with seed rate. With N applied, N yields increased to an asymptote with seed rate, when N was withheld there was little response of N yields to seed rate. In 2002, N utilization efficiency (NUtEt and NUtEg) also increased asymptotically with seed rate, but in 2003 seed rate had little effect on N utilization efficiency. When nitrogen fertilizer had not been applied, NHI consistently decreased with increasing seed rate. The timing of N application made little difference to NUE, NY, or NUtE.Peer reviewe

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Genetic variation for nitrogen use efficiency in winter wheat (Triticum aestivum L.)

Cited by 27 publications

References 5 publications

Evaluation of Australian wheat genotypes for response to variable nitrogen application

Evaluation of Australian wheat genotypes for response to variable nitrogen application

Inheritance of the efficiency of nitrogen uptake and utilization in winter wheat (Triticum aestivum L.) under diverse nutrition levels

Heterotic and seed rate effects on nitrogen efficiencies in wheat

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