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Allometric Characteristics of Rice Seedlings under Different Transplanted Hills and Row Spacing: Impacts on Nitrogen Use Efficiency and Yield

The number of seedlings per hill and the configuration of plant row spacing are important management measures to improve rice yield. In the present study, we evaluated the impact of various seedlings per hill (1, 3, 6, and 9 seedlings hill(−1)) under four different rice verities (two conventional ri...

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Autores principales: Wu, Xiaoyan, Ali, Izhar, Iqbal, Anas, Ullah, Saif, Yuan, Pengli, Xu, Anjie, Xie, Dongjie, Zhou, Yuxi, Long, Xinlu, Zhang, Hua, Yu, Jing, Guo, Zixiong, Liang, He, Wei, Shanqing, Jiang, Ligeng
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9573414/
https://www.ncbi.nlm.nih.gov/pubmed/36235375
http://dx.doi.org/10.3390/plants11192508
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author Wu, Xiaoyan
Ali, Izhar
Iqbal, Anas
Ullah, Saif
Yuan, Pengli
Xu, Anjie
Xie, Dongjie
Zhou, Yuxi
Long, Xinlu
Zhang, Hua
Yu, Jing
Guo, Zixiong
Liang, He
Wei, Shanqing
Jiang, Ligeng
author_facet Wu, Xiaoyan
Ali, Izhar
Iqbal, Anas
Ullah, Saif
Yuan, Pengli
Xu, Anjie
Xie, Dongjie
Zhou, Yuxi
Long, Xinlu
Zhang, Hua
Yu, Jing
Guo, Zixiong
Liang, He
Wei, Shanqing
Jiang, Ligeng
author_sort Wu, Xiaoyan
collection PubMed
description The number of seedlings per hill and the configuration of plant row spacing are important management measures to improve rice yield. In the present study, we evaluated the impact of various seedlings per hill (1, 3, 6, and 9 seedlings hill(−1)) under four different rice verities (two conventional rice, two hybrid rice) on allometric characteristics, nitrogen use efficiency (NUE) and yield in 2020 at early and late season. Results showed that compared with nine seedlings per hill (wide row spacing), the number of effective panicles, yield, grain biomass allocation, grain-to-leaf ratio, grain nitrogen accumulation, nitrogen dry matter production efficiency (NDMPE), N harvest index (NHI) of 1 seedling per hill increased by 21.8%, 10.91%, 10.5%, 32.25%, 17.03%, 9.67%, 6.5%, respectively. With the increase of seedlings per hill and the expansion of row spacing, stem biomass (SB) and reproductive biomass (RB) increased with the increase of above-ground biomass, mainly showing the relationship of isometric growth. Leaf biomass (LB) increased with above-ground biomass, mainly showing the relationship of allometric growth. The results suggested that under the same basic seedlings, transplanting 1 seedling per hill and dense planting was the most beneficial to improve rice yield.
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spelling pubmed-95734142022-10-17 Allometric Characteristics of Rice Seedlings under Different Transplanted Hills and Row Spacing: Impacts on Nitrogen Use Efficiency and Yield Wu, Xiaoyan Ali, Izhar Iqbal, Anas Ullah, Saif Yuan, Pengli Xu, Anjie Xie, Dongjie Zhou, Yuxi Long, Xinlu Zhang, Hua Yu, Jing Guo, Zixiong Liang, He Wei, Shanqing Jiang, Ligeng Plants (Basel) Article The number of seedlings per hill and the configuration of plant row spacing are important management measures to improve rice yield. In the present study, we evaluated the impact of various seedlings per hill (1, 3, 6, and 9 seedlings hill(−1)) under four different rice verities (two conventional rice, two hybrid rice) on allometric characteristics, nitrogen use efficiency (NUE) and yield in 2020 at early and late season. Results showed that compared with nine seedlings per hill (wide row spacing), the number of effective panicles, yield, grain biomass allocation, grain-to-leaf ratio, grain nitrogen accumulation, nitrogen dry matter production efficiency (NDMPE), N harvest index (NHI) of 1 seedling per hill increased by 21.8%, 10.91%, 10.5%, 32.25%, 17.03%, 9.67%, 6.5%, respectively. With the increase of seedlings per hill and the expansion of row spacing, stem biomass (SB) and reproductive biomass (RB) increased with the increase of above-ground biomass, mainly showing the relationship of isometric growth. Leaf biomass (LB) increased with above-ground biomass, mainly showing the relationship of allometric growth. The results suggested that under the same basic seedlings, transplanting 1 seedling per hill and dense planting was the most beneficial to improve rice yield. MDPI 2022-09-26 /pmc/articles/PMC9573414/ /pubmed/36235375 http://dx.doi.org/10.3390/plants11192508 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Wu, Xiaoyan
Ali, Izhar
Iqbal, Anas
Ullah, Saif
Yuan, Pengli
Xu, Anjie
Xie, Dongjie
Zhou, Yuxi
Long, Xinlu
Zhang, Hua
Yu, Jing
Guo, Zixiong
Liang, He
Wei, Shanqing
Jiang, Ligeng
Allometric Characteristics of Rice Seedlings under Different Transplanted Hills and Row Spacing: Impacts on Nitrogen Use Efficiency and Yield
title Allometric Characteristics of Rice Seedlings under Different Transplanted Hills and Row Spacing: Impacts on Nitrogen Use Efficiency and Yield
title_full Allometric Characteristics of Rice Seedlings under Different Transplanted Hills and Row Spacing: Impacts on Nitrogen Use Efficiency and Yield
title_fullStr Allometric Characteristics of Rice Seedlings under Different Transplanted Hills and Row Spacing: Impacts on Nitrogen Use Efficiency and Yield
title_full_unstemmed Allometric Characteristics of Rice Seedlings under Different Transplanted Hills and Row Spacing: Impacts on Nitrogen Use Efficiency and Yield
title_short Allometric Characteristics of Rice Seedlings under Different Transplanted Hills and Row Spacing: Impacts on Nitrogen Use Efficiency and Yield
title_sort allometric characteristics of rice seedlings under different transplanted hills and row spacing: impacts on nitrogen use efficiency and yield
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9573414/
https://www.ncbi.nlm.nih.gov/pubmed/36235375
http://dx.doi.org/10.3390/plants11192508
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