Post-anthesis Relationships Between Nitrogen Isotope Discrimination and Yield of Spring Wheat Under Different Nitrogen Levels
Wheat grain yield and nitrogen (N) content are influenced by the amount of N remobilized to the grain, together with pre-anthesis and post-anthesis N uptake. Isotopic techniques in farmed areas may provide insight into the mechanism underlying the N cycle. 15N-labeled urea was applied to microplots...
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2022-03-01
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| Series: | Frontiers in Plant Science |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fpls.2022.859655/full |
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| author | Zechariah Effah Zechariah Effah Zechariah Effah Lingling Li Lingling Li Junhong Xie Junhong Xie Benjamin Karikari Jinbin Wang Jinbin Wang Min Zeng Min Zeng Linlin Wang Linlin Wang Solomon Boamah Jagadabhi Padma Shanthi |
| author_facet | Zechariah Effah Zechariah Effah Zechariah Effah Lingling Li Lingling Li Junhong Xie Junhong Xie Benjamin Karikari Jinbin Wang Jinbin Wang Min Zeng Min Zeng Linlin Wang Linlin Wang Solomon Boamah Jagadabhi Padma Shanthi |
| author_sort | Zechariah Effah |
| collection | DOAJ |
| description | Wheat grain yield and nitrogen (N) content are influenced by the amount of N remobilized to the grain, together with pre-anthesis and post-anthesis N uptake. Isotopic techniques in farmed areas may provide insight into the mechanism underlying the N cycle. 15N-labeled urea was applied to microplots within five different fertilized treatments 0 kg ha–1 (N1), 52.5 kg ha–1 (N2), 105 kg ha–1 (N3), 157.5 kg ha–1 (N4), and 210 kg ha–1 (N5) of a long-term field trial (2003–2021) in a rainfed wheat field in the semi-arid loess Plateau, China, to determine post-anthesis N uptake and remobilization into the grain, as well as the variability of 15N enrichment in aboveground parts. Total N uptake was between 7.88 and 29.27 kg ha–1 for straw and 41.85 and 95.27 kg ha–1 for grain. In comparison to N1, N fertilization increased straw and grain N uptake by 73.1 and 56.1%, respectively. Nitrogen use efficiency (NUE) and harvest index were altered by N application rates. The average NUE at maturity was 19.9% in 2020 and 20.01% in 2021; however, it was usually higher under the control and low N conditions. The amount of 15N excess increased as the N rate increased: N5 had the highest 15N excess at the maturity stage in the upper (2.28 ± 0.36%), the middle (1.77 ± 0.28%), and the lower portion (1.68 ± 1.01%). Compared to N1, N fertilization (N2–N5) increased 15N excess in the various shoot portions by 50, 38, and 35% at maturity for upper, middle, and lower portions, respectively. At maturity, the 15N excess remobilized to the grain under N1–N5 was between 5 and 8%. Our findings revealed that N had a significant impact on yield and N isotope discrimination in spring wheat that these two parameters can interact, and that future research on the relationship between yield and N isotope discrimination in spring wheat should take these factors into account. |
| first_indexed | 2024-12-13T01:39:44Z |
| format | Article |
| id | doaj.art-27062d2995d04d7281918d33ea70bca1 |
| institution | Directory Open Access Journal |
| issn | 1664-462X |
| language | English |
| last_indexed | 2024-12-13T01:39:44Z |
| publishDate | 2022-03-01 |
| publisher | Frontiers Media S.A. |
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| series | Frontiers in Plant Science |
| spelling | doaj.art-27062d2995d04d7281918d33ea70bca12022-12-22T00:03:46ZengFrontiers Media S.A.Frontiers in Plant Science1664-462X2022-03-011310.3389/fpls.2022.859655859655Post-anthesis Relationships Between Nitrogen Isotope Discrimination and Yield of Spring Wheat Under Different Nitrogen LevelsZechariah Effah0Zechariah Effah1Zechariah Effah2Lingling Li3Lingling Li4Junhong Xie5Junhong Xie6Benjamin Karikari7Jinbin Wang8Jinbin Wang9Min Zeng10Min Zeng11Linlin Wang12Linlin Wang13Solomon Boamah14Jagadabhi Padma Shanthi15State Key Laboratory of Arid Land Crop Science, Lanzhou, ChinaCollege of Agronomy, Gansu Agricultural University, Lanzhou, ChinaCouncil for Scientific and Industrial Research (CSIR)-Plant Genetic Resources Research Institute, Bunso, GhanaState Key Laboratory of Arid Land Crop Science, Lanzhou, ChinaCollege of Agronomy, Gansu Agricultural University, Lanzhou, ChinaState Key Laboratory of Arid Land Crop Science, Lanzhou, ChinaCollege of Agronomy, Gansu Agricultural University, Lanzhou, ChinaDepartment of Crop Science, Faculty of Agriculture, Food and Consumer Sciences, University for Development Studies, Tamale, GhanaState Key Laboratory of Arid Land Crop Science, Lanzhou, ChinaCollege of Agronomy, Gansu Agricultural University, Lanzhou, ChinaState Key Laboratory of Arid Land Crop Science, Lanzhou, ChinaCollege of Agronomy, Gansu Agricultural University, Lanzhou, ChinaState Key Laboratory of Arid Land Crop Science, Lanzhou, ChinaCollege of Agronomy, Gansu Agricultural University, Lanzhou, ChinaBiocontrol Engineering Laboratory of Crop Diseases and Pests of Gansu Province, College of Plant Protection, Gansu Agricultural University, Lanzhou, ChinaAction for Climate and Environment Program, Dr. Reddy’s Foundation, Hyderabad, IndiaWheat grain yield and nitrogen (N) content are influenced by the amount of N remobilized to the grain, together with pre-anthesis and post-anthesis N uptake. Isotopic techniques in farmed areas may provide insight into the mechanism underlying the N cycle. 15N-labeled urea was applied to microplots within five different fertilized treatments 0 kg ha–1 (N1), 52.5 kg ha–1 (N2), 105 kg ha–1 (N3), 157.5 kg ha–1 (N4), and 210 kg ha–1 (N5) of a long-term field trial (2003–2021) in a rainfed wheat field in the semi-arid loess Plateau, China, to determine post-anthesis N uptake and remobilization into the grain, as well as the variability of 15N enrichment in aboveground parts. Total N uptake was between 7.88 and 29.27 kg ha–1 for straw and 41.85 and 95.27 kg ha–1 for grain. In comparison to N1, N fertilization increased straw and grain N uptake by 73.1 and 56.1%, respectively. Nitrogen use efficiency (NUE) and harvest index were altered by N application rates. The average NUE at maturity was 19.9% in 2020 and 20.01% in 2021; however, it was usually higher under the control and low N conditions. The amount of 15N excess increased as the N rate increased: N5 had the highest 15N excess at the maturity stage in the upper (2.28 ± 0.36%), the middle (1.77 ± 0.28%), and the lower portion (1.68 ± 1.01%). Compared to N1, N fertilization (N2–N5) increased 15N excess in the various shoot portions by 50, 38, and 35% at maturity for upper, middle, and lower portions, respectively. At maturity, the 15N excess remobilized to the grain under N1–N5 was between 5 and 8%. Our findings revealed that N had a significant impact on yield and N isotope discrimination in spring wheat that these two parameters can interact, and that future research on the relationship between yield and N isotope discrimination in spring wheat should take these factors into account.https://www.frontiersin.org/articles/10.3389/fpls.2022.859655/fullN remobilizationharvest index15N labelingnitrogen uptakesustainable production |
| spellingShingle | Zechariah Effah Zechariah Effah Zechariah Effah Lingling Li Lingling Li Junhong Xie Junhong Xie Benjamin Karikari Jinbin Wang Jinbin Wang Min Zeng Min Zeng Linlin Wang Linlin Wang Solomon Boamah Jagadabhi Padma Shanthi Post-anthesis Relationships Between Nitrogen Isotope Discrimination and Yield of Spring Wheat Under Different Nitrogen Levels Frontiers in Plant Science N remobilization harvest index 15N labeling nitrogen uptake sustainable production |
| title | Post-anthesis Relationships Between Nitrogen Isotope Discrimination and Yield of Spring Wheat Under Different Nitrogen Levels |
| title_full | Post-anthesis Relationships Between Nitrogen Isotope Discrimination and Yield of Spring Wheat Under Different Nitrogen Levels |
| title_fullStr | Post-anthesis Relationships Between Nitrogen Isotope Discrimination and Yield of Spring Wheat Under Different Nitrogen Levels |
| title_full_unstemmed | Post-anthesis Relationships Between Nitrogen Isotope Discrimination and Yield of Spring Wheat Under Different Nitrogen Levels |
| title_short | Post-anthesis Relationships Between Nitrogen Isotope Discrimination and Yield of Spring Wheat Under Different Nitrogen Levels |
| title_sort | post anthesis relationships between nitrogen isotope discrimination and yield of spring wheat under different nitrogen levels |
| topic | N remobilization harvest index 15N labeling nitrogen uptake sustainable production |
| url | https://www.frontiersin.org/articles/10.3389/fpls.2022.859655/full |
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