Variation for Nitrogen Use Efficiency Traits in Wheat Under Contrasting Nitrogen Treatments in South-Eastern Europe.
Variation for Nitrogen Use Efficiency Traits in Wheat Under Contrasting Nitrogen Treatments in South-Eastern Europe.
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DOI：
10.3389/fpls.2021.682333
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发表时间：
2021
影响因子：
5.6
通讯作者：
Novoselović D
中科院分区：
文献类型：
--
作者：
Ivić M;Grljušić S;Plavšin I;Dvojković K;Lovrić A;Rajković B;Maričević M;Černe M;Popović B;Lončarić Z;Bentley AR;Swarbreck SM;Šarčević H;Novoselović D
小麦品种对氮肥的吸收和利用反应不同。表征这种变异是提高未来品种的氮利用效率（NUE），同时最大限度地提高生产（产量）潜力的重要一步。在这项研究中，我们比较了1936年至2016年间在田间条件下低氮和高氮输入水平下种植的48个不同小麦品种的农艺表现，以评估NUE及其组分之间的关系。低氮处理的农艺性状值显著降低，供试品种的所有性状（除氮再动员效率外）均表现出显著差异，表明反应是基因型依赖的，尽管也观察到显著的基因型×环境效应。总体而言，我们显示了品种的NUE随着时间的推移，0.33%和0.30%年-1低，高氮，分别改善，并提出，这主要是由品种选择增产。更全面地了解这些改进的组成部分将为未来有针对性的育种和选择策略提供信息，以支持减少肥料使用，同时保持生产力。
Wheat cultivars differ in their response to nitrogen (N) fertilizer, both in terms of its uptake and utilization. Characterizing this variation is an important step in improving the N use efficiency (NUE) of future cultivars while maximizing production (yield) potential. In this study, we compared the agronomic performance of 48 diverse wheat cultivars released between 1936 and 2016 at low and high N input levels in field conditions to assess the relationship between NUE and its components. Agronomic trait values were significantly lower in the low N treatment, and the cultivars tested showed a significant variation for all traits (apart from the N remobilization efficiency), indicating that response is genotype-dependent, although significant genotype × environment effects were also observed. Overall, we show a varietal improvement in NUE over time of 0.33 and 0.30% year–1 at low and high N, respectively, and propose that this is driven predominantly by varietal selection for increased yield. More complete understanding of the components of these improvements will inform future targeted breeding and selection strategies to support a reduction in fertilizer use while maintaining productivity.
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影响因子：
4.9
作者：
Diaz, U;Saliba-Colombani, V;Maselaux-Daubresse, U
通讯作者：
Maselaux-Daubresse, U
影响因子：
2.3
作者：
DHUGGA, KS;WAINES, JG
通讯作者：
WAINES, JG
影响因子：
4.2
作者：
Ding, L;Wang, KJ;Li, YH
通讯作者：
Li, YH
DOI：
10.1198/108571106x154443
发表时间：
2006-12-01
影响因子：
1.4
作者：
Cullis, B. R.;Smith, A. B.;Coombes, N. E.
通讯作者：
Coombes, N. E.
影响因子：
5.4
作者：
Cormier, Fabien;Faure, Sebastien;Le Gouis, Jacques
通讯作者：
Le Gouis, Jacques