TY  - JA
AU  - Ivić,M.
AU  - Grljušić,S.
AU  - Plavšin,I.
AU  - Dvojković,K.
AU  - Lovrić,A.
AU  - Rajković,B.
AU  - Maričević,M.
AU  - Černe,M.
AU  - Popović,B.
AU  - Lončarić,Z.
AU  - Bentley,A.R.
AU  - Swarbreck,S.M.
AU  - Šarčević,H.
AU  - Novoselovic,D.
TI  - Variation for nitrogen use efficiency traits in wheat under contrasting nitrogen treatments in South-Eastern Europe
SN  - 1664-462X
PY  - 2021///
CY  - Switzerland
PB  - Frontiers
KW  - Triticum aestivum
KW  - AGROVOC
KW  - Plant breeding
KW  - Nitrogen
KW  - Use efficiency
KW  - Genetic variance
KW  - Heritability
KW  - Indirect selection
N1  - Peer review; Open Access
N2  - 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
UR  - https://hdl.handle.net/10883/21769
T2  - Frontiers in Plant Science
DO  - https://doi.org/10.3389/fpls.2021.682333
ER  -