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Maize grain yield enhancement in modern hybrids associated with greater stalk lodging resistance at a high planting density: a case study in northeast China

Lodging resistance is a critical trait in modern maize breeding. This study aimed to examine maize stalk lodging and its related characteristics in response to increasing planting densities in modern hybrids. A two-year field trial was conducted from 2018 to 2019 with two widely grown commercial hyb...

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Autores principales: Cui, Jingjing, Cui, Zhengguo, Lu, Yang, Lv, Xiaofei, Cao, Qingjun, Hou, Yunlong, Yang, Xiangyu, Gu, Yan
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9420147/
https://www.ncbi.nlm.nih.gov/pubmed/36030276
http://dx.doi.org/10.1038/s41598-022-18908-z
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author Cui, Jingjing
Cui, Zhengguo
Lu, Yang
Lv, Xiaofei
Cao, Qingjun
Hou, Yunlong
Yang, Xiangyu
Gu, Yan
author_facet Cui, Jingjing
Cui, Zhengguo
Lu, Yang
Lv, Xiaofei
Cao, Qingjun
Hou, Yunlong
Yang, Xiangyu
Gu, Yan
author_sort Cui, Jingjing
collection PubMed
description Lodging resistance is a critical trait in modern maize breeding. This study aimed to examine maize stalk lodging and its related characteristics in response to increasing planting densities in modern hybrids. A two-year field trial was conducted from 2018 to 2019 with two widely grown commercial hybrids (‘Xy335’ and ‘Fm985’) and three planting density treatments of 4.5 × 10(4) (low density, LD), 6.5 × 10(4) (medium density, MD), and 8.5 × 10(4) plants/ha (high density, HD). New hybrid Fm985 had a significantly higher grain yield and lower lodging rate at HD, while there was no significance at LD and MD. Compared to Fm985, old hybrid Xy335 had a significantly high plant height, ear and gravity height, and culm length (CL) across the three planting densities, while opposite stalk bending strength (SBS), dry weight per unit length (DWPU), cross-sectional area, and the cellulose and lignin content in the basal internode were low. Correlation and path analysis revealed that kernel number per ear and lodging rate directly contributed to maize grain yield, while lodging-related traits of SBS, stem lignin, and DWPU had an indirect effect on maize grain yield, suggesting that modern hybrid maize yield enhancement is associated with greater stalk lodging resistance at a high planting density in northeast China.
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spelling pubmed-94201472022-08-29 Maize grain yield enhancement in modern hybrids associated with greater stalk lodging resistance at a high planting density: a case study in northeast China Cui, Jingjing Cui, Zhengguo Lu, Yang Lv, Xiaofei Cao, Qingjun Hou, Yunlong Yang, Xiangyu Gu, Yan Sci Rep Article Lodging resistance is a critical trait in modern maize breeding. This study aimed to examine maize stalk lodging and its related characteristics in response to increasing planting densities in modern hybrids. A two-year field trial was conducted from 2018 to 2019 with two widely grown commercial hybrids (‘Xy335’ and ‘Fm985’) and three planting density treatments of 4.5 × 10(4) (low density, LD), 6.5 × 10(4) (medium density, MD), and 8.5 × 10(4) plants/ha (high density, HD). New hybrid Fm985 had a significantly higher grain yield and lower lodging rate at HD, while there was no significance at LD and MD. Compared to Fm985, old hybrid Xy335 had a significantly high plant height, ear and gravity height, and culm length (CL) across the three planting densities, while opposite stalk bending strength (SBS), dry weight per unit length (DWPU), cross-sectional area, and the cellulose and lignin content in the basal internode were low. Correlation and path analysis revealed that kernel number per ear and lodging rate directly contributed to maize grain yield, while lodging-related traits of SBS, stem lignin, and DWPU had an indirect effect on maize grain yield, suggesting that modern hybrid maize yield enhancement is associated with greater stalk lodging resistance at a high planting density in northeast China. Nature Publishing Group UK 2022-08-27 /pmc/articles/PMC9420147/ /pubmed/36030276 http://dx.doi.org/10.1038/s41598-022-18908-z Text en © The Author(s) 2022 https://creativecommons.org/licenses/by/4.0/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/ (https://creativecommons.org/licenses/by/4.0/) .
spellingShingle Article
Cui, Jingjing
Cui, Zhengguo
Lu, Yang
Lv, Xiaofei
Cao, Qingjun
Hou, Yunlong
Yang, Xiangyu
Gu, Yan
Maize grain yield enhancement in modern hybrids associated with greater stalk lodging resistance at a high planting density: a case study in northeast China
title Maize grain yield enhancement in modern hybrids associated with greater stalk lodging resistance at a high planting density: a case study in northeast China
title_full Maize grain yield enhancement in modern hybrids associated with greater stalk lodging resistance at a high planting density: a case study in northeast China
title_fullStr Maize grain yield enhancement in modern hybrids associated with greater stalk lodging resistance at a high planting density: a case study in northeast China
title_full_unstemmed Maize grain yield enhancement in modern hybrids associated with greater stalk lodging resistance at a high planting density: a case study in northeast China
title_short Maize grain yield enhancement in modern hybrids associated with greater stalk lodging resistance at a high planting density: a case study in northeast China
title_sort maize grain yield enhancement in modern hybrids associated with greater stalk lodging resistance at a high planting density: a case study in northeast china
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9420147/
https://www.ncbi.nlm.nih.gov/pubmed/36030276
http://dx.doi.org/10.1038/s41598-022-18908-z
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