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Root characteristics of spring wheat under drip irrigation and their relationship with aboveground biomass and yield
The objectives of this two-year field experiment were (1) to study the effect of irrigation frequency and irrigation amount on the root characteristics of drip-irrigated spring wheat (Triticum aestivum L.) and (2) to determine the relationship between these root characteristics and aboveground bioma...
Autores principales: | , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group UK
2021
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7921688/ https://www.ncbi.nlm.nih.gov/pubmed/33649480 http://dx.doi.org/10.1038/s41598-021-84208-7 |
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author | Chen, Rui Xiong, Xing-peng Cheng, Wen-han |
author_facet | Chen, Rui Xiong, Xing-peng Cheng, Wen-han |
author_sort | Chen, Rui |
collection | PubMed |
description | The objectives of this two-year field experiment were (1) to study the effect of irrigation frequency and irrigation amount on the root characteristics of drip-irrigated spring wheat (Triticum aestivum L.) and (2) to determine the relationship between these root characteristics and aboveground biomass and yield. A split-plot design was used with two wheat cultivars (Xinchun 6 and Xinchun 22). The irrigation treatments consisted of three irrigation intervals (D(1,) 13 d; D(2), 10 d; and D(3), 7 d) and three water amounts (W1, 3750 m(3)/ha; W2, 6000 m(3)/ha; and W3, 8250 m(3)/ha). The results showed that root length density (RLD) and root weight density (RWD) were greater at 0–20 cm than at 20–40 cm at flowering. The RLD was greater in D1 and D2 than in D3 in the shallow soil layer and did not differ among the treatments with different irrigation frequencies in deep soil. The RLD at the 0–20 cm depth of W3 was 17.9% greater than that of W2 and 53.8% greater than that of W1, and the RLD trend was opposite at the 20–40 cm depth. The root–shoot ratio was significantly higher in D2 than in the other treatment, whereas the RLD, RWD, leaf Pn and LAI were significantly greater in D3. Leaf Pn and LAI both increased as the irrigation amount increased. Regression analysis showed a natural logarithmic relationship between RWD and aboveground biomass (R(2) > 0.60, P < 0.05) and binomial relationships of the RWD at 0–20 cm depth (R(2) = 0.43, P < 0.05) and the RLD at 20–40 cm depth (R(2) = 0.34, P < 0.05) with grain yield. We found that with the optimum irrigation amount (W2), increasing drip irrigation frequency can increase wheat root length and root weight and aboveground biomass accumulation, thereby improving yield and water use efficiency. |
format | Online Article Text |
id | pubmed-7921688 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-79216882021-03-02 Root characteristics of spring wheat under drip irrigation and their relationship with aboveground biomass and yield Chen, Rui Xiong, Xing-peng Cheng, Wen-han Sci Rep Article The objectives of this two-year field experiment were (1) to study the effect of irrigation frequency and irrigation amount on the root characteristics of drip-irrigated spring wheat (Triticum aestivum L.) and (2) to determine the relationship between these root characteristics and aboveground biomass and yield. A split-plot design was used with two wheat cultivars (Xinchun 6 and Xinchun 22). The irrigation treatments consisted of three irrigation intervals (D(1,) 13 d; D(2), 10 d; and D(3), 7 d) and three water amounts (W1, 3750 m(3)/ha; W2, 6000 m(3)/ha; and W3, 8250 m(3)/ha). The results showed that root length density (RLD) and root weight density (RWD) were greater at 0–20 cm than at 20–40 cm at flowering. The RLD was greater in D1 and D2 than in D3 in the shallow soil layer and did not differ among the treatments with different irrigation frequencies in deep soil. The RLD at the 0–20 cm depth of W3 was 17.9% greater than that of W2 and 53.8% greater than that of W1, and the RLD trend was opposite at the 20–40 cm depth. The root–shoot ratio was significantly higher in D2 than in the other treatment, whereas the RLD, RWD, leaf Pn and LAI were significantly greater in D3. Leaf Pn and LAI both increased as the irrigation amount increased. Regression analysis showed a natural logarithmic relationship between RWD and aboveground biomass (R(2) > 0.60, P < 0.05) and binomial relationships of the RWD at 0–20 cm depth (R(2) = 0.43, P < 0.05) and the RLD at 20–40 cm depth (R(2) = 0.34, P < 0.05) with grain yield. We found that with the optimum irrigation amount (W2), increasing drip irrigation frequency can increase wheat root length and root weight and aboveground biomass accumulation, thereby improving yield and water use efficiency. Nature Publishing Group UK 2021-03-01 /pmc/articles/PMC7921688/ /pubmed/33649480 http://dx.doi.org/10.1038/s41598-021-84208-7 Text en © The Author(s) 2021 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/. |
spellingShingle | Article Chen, Rui Xiong, Xing-peng Cheng, Wen-han Root characteristics of spring wheat under drip irrigation and their relationship with aboveground biomass and yield |
title | Root characteristics of spring wheat under drip irrigation and their relationship with aboveground biomass and yield |
title_full | Root characteristics of spring wheat under drip irrigation and their relationship with aboveground biomass and yield |
title_fullStr | Root characteristics of spring wheat under drip irrigation and their relationship with aboveground biomass and yield |
title_full_unstemmed | Root characteristics of spring wheat under drip irrigation and their relationship with aboveground biomass and yield |
title_short | Root characteristics of spring wheat under drip irrigation and their relationship with aboveground biomass and yield |
title_sort | root characteristics of spring wheat under drip irrigation and their relationship with aboveground biomass and yield |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7921688/ https://www.ncbi.nlm.nih.gov/pubmed/33649480 http://dx.doi.org/10.1038/s41598-021-84208-7 |
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