Improving the yield potential in maize by constructing the ideal plant type and optimizing the maize canopy structure

Abstract Understanding the impact of changes in the crop canopy on yield is important in order to meet future food demands. We designed a field experiment to investigate the relationships between crop‐related factors and yield gaps in maize to enhance crop yields from 2010 to 2018 in Qitai, China. M...

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Autores principales:	Rongfa Li, Guoqiang Zhang, Guangzhou Liu, Keru Wang, Ruizhi Xie, Peng Hou, Bo Ming, Zhigang Wang, Shaokun Li
Formato:	article
Lenguaje:	EN
Publicado:	Wiley 2021
Materias:	canopy structure radiation utilization efficiency spring maize yield gap Agriculture S Agriculture (General) S1-972
Acceso en línea:	https://doaj.org/article/a0bd1c99c62b49a59e7a94ce227842fd
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spelling	oai:doaj.org-article:a0bd1c99c62b49a59e7a94ce227842fd2021-11-17T04:20:03ZImproving the yield potential in maize by constructing the ideal plant type and optimizing the maize canopy structure2048-369410.1002/fes3.312https://doaj.org/article/a0bd1c99c62b49a59e7a94ce227842fd2021-11-01T00:00:00Zhttps://doi.org/10.1002/fes3.312https://doaj.org/toc/2048-3694Abstract Understanding the impact of changes in the crop canopy on yield is important in order to meet future food demands. We designed a field experiment to investigate the relationships between crop‐related factors and yield gaps in maize to enhance crop yields from 2010 to 2018 in Qitai, China. Maize grain yields (n = 247) were divided into four yield ranges: <15 Mg ha−1 (n = 30), 15–18 Mg ha−1 (n = 79), 18–21 Mg ha−1 (n = 114), and >21 Mg ha−1 (n = 24). The characteristics of the maize canopy structure as well as the light interception, photosynthetic potential, and radiation utilization efficiency in these four yield ranges were analyzed. The canopy structure of treated fields with yields >21 Mg ha−1 had a higher leaf area index (7.2), lower ear ratio (0.39), longer internodes above the ear (20.1 cm), larger leaf orientation value (LOV) above the ear (48.6), smaller leaf angle above the ear (18°), and smaller LOV below the ear (36.0) when compared to the other treatments. These findings suggested that the yield gap is dependent on canopy structure, and the evolutionary trend also accounted for significant increases in post‐LAD (p < 0.01), changes in crop growth rate (CGR; p < 0.01), net assimilation rate (NAR; p < 0.05), and radiation utilization efficiency. The radiation utilization efficiencies in the 15–18, 18–21, and >21 Mg ha−1 treatments (1.23, 1.28, and 1.38 g MJ−1, respectively) were higher than for the <15 Mg ha−1 treatment (1.10 g MJ−1). Furthermore, there are opportunities to narrow the yield gaps by optimizing the canopy structure to make full use of the solar radiation resources. Our results will help breeders choose an ideal canopy structure to improve yield. In addition, our results may serve as a general guide for other maize growing regions.Rongfa LiGuoqiang ZhangGuangzhou LiuKeru WangRuizhi XiePeng HouBo MingZhigang WangShaokun LiWileyarticlecanopy structureradiation utilization efficiencyspring maizeyield gapAgricultureSAgriculture (General)S1-972ENFood and Energy Security, Vol 10, Iss 4, Pp n/a-n/a (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	canopy structure radiation utilization efficiency spring maize yield gap Agriculture S Agriculture (General) S1-972
spellingShingle	canopy structure radiation utilization efficiency spring maize yield gap Agriculture S Agriculture (General) S1-972 Rongfa Li Guoqiang Zhang Guangzhou Liu Keru Wang Ruizhi Xie Peng Hou Bo Ming Zhigang Wang Shaokun Li Improving the yield potential in maize by constructing the ideal plant type and optimizing the maize canopy structure
description	Abstract Understanding the impact of changes in the crop canopy on yield is important in order to meet future food demands. We designed a field experiment to investigate the relationships between crop‐related factors and yield gaps in maize to enhance crop yields from 2010 to 2018 in Qitai, China. Maize grain yields (n = 247) were divided into four yield ranges: <15 Mg ha−1 (n = 30), 15–18 Mg ha−1 (n = 79), 18–21 Mg ha−1 (n = 114), and >21 Mg ha−1 (n = 24). The characteristics of the maize canopy structure as well as the light interception, photosynthetic potential, and radiation utilization efficiency in these four yield ranges were analyzed. The canopy structure of treated fields with yields >21 Mg ha−1 had a higher leaf area index (7.2), lower ear ratio (0.39), longer internodes above the ear (20.1 cm), larger leaf orientation value (LOV) above the ear (48.6), smaller leaf angle above the ear (18°), and smaller LOV below the ear (36.0) when compared to the other treatments. These findings suggested that the yield gap is dependent on canopy structure, and the evolutionary trend also accounted for significant increases in post‐LAD (p < 0.01), changes in crop growth rate (CGR; p < 0.01), net assimilation rate (NAR; p < 0.05), and radiation utilization efficiency. The radiation utilization efficiencies in the 15–18, 18–21, and >21 Mg ha−1 treatments (1.23, 1.28, and 1.38 g MJ−1, respectively) were higher than for the <15 Mg ha−1 treatment (1.10 g MJ−1). Furthermore, there are opportunities to narrow the yield gaps by optimizing the canopy structure to make full use of the solar radiation resources. Our results will help breeders choose an ideal canopy structure to improve yield. In addition, our results may serve as a general guide for other maize growing regions.
format	article
author	Rongfa Li Guoqiang Zhang Guangzhou Liu Keru Wang Ruizhi Xie Peng Hou Bo Ming Zhigang Wang Shaokun Li
author_facet	Rongfa Li Guoqiang Zhang Guangzhou Liu Keru Wang Ruizhi Xie Peng Hou Bo Ming Zhigang Wang Shaokun Li
author_sort	Rongfa Li
title	Improving the yield potential in maize by constructing the ideal plant type and optimizing the maize canopy structure
title_short	Improving the yield potential in maize by constructing the ideal plant type and optimizing the maize canopy structure
title_full	Improving the yield potential in maize by constructing the ideal plant type and optimizing the maize canopy structure
title_fullStr	Improving the yield potential in maize by constructing the ideal plant type and optimizing the maize canopy structure
title_full_unstemmed	Improving the yield potential in maize by constructing the ideal plant type and optimizing the maize canopy structure
title_sort	improving the yield potential in maize by constructing the ideal plant type and optimizing the maize canopy structure
publisher	Wiley
publishDate	2021
url	https://doaj.org/article/a0bd1c99c62b49a59e7a94ce227842fd
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Improving the yield potential in maize by constructing the ideal plant type and optimizing the maize canopy structure

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