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Assessing diversity in canopy architecture, photosynthesis, and water‐use efficiency in a cowpea magic population
Optimizing crops to improve light absorption and CO(2) assimilation throughout the canopy is a proposed strategy to increase yield and meet the needs of a growing population by 2050. Globally, the greatest population increase is expected to occur in Sub‐Saharan Africa where large yield gaps currentl...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
John Wiley and Sons Inc.
2020
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7757253/ https://www.ncbi.nlm.nih.gov/pubmed/33381299 http://dx.doi.org/10.1002/fes3.236 |
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author | Digrado, Anthony Mitchell, Noah G. Montes, Christopher M. Dirvanskyte, Paulina Ainsworth, Elizabeth A. |
author_facet | Digrado, Anthony Mitchell, Noah G. Montes, Christopher M. Dirvanskyte, Paulina Ainsworth, Elizabeth A. |
author_sort | Digrado, Anthony |
collection | PubMed |
description | Optimizing crops to improve light absorption and CO(2) assimilation throughout the canopy is a proposed strategy to increase yield and meet the needs of a growing population by 2050. Globally, the greatest population increase is expected to occur in Sub‐Saharan Africa where large yield gaps currently persist; therefore, it is crucial to develop high‐yielding crops adapted to this region. In this study, we screened 50 cowpea (Vigna unguiculata (L.) Walp) genotypes from the multi‐parent advanced generation inter‐cross (MAGIC) population for canopy architectural traits, canopy photosynthesis, and water‐use efficiency using a canopy gas exchange chamber in order to improve our understanding of the relationships among those traits. Canopy architecture contributed to 38.6% of the variance observed in canopy photosynthesis. The results suggest that the light environment within the canopy was a limiting factor for canopy CO(2) assimilation. Traits favoring greater exposure of leaf area to light such as the width of the canopy relative to the total leaf area were associated with greater canopy photosynthesis, especially in canopies with high biomass. Canopy water‐use efficiency was highly determined by canopy photosynthetic activity and therefore canopy architecture, which indicates that optimizing the canopy will also contribute to improving canopy water‐use efficiency. We discuss different breeding strategies for future programs aimed at the improvement of cowpea yield for the Sub‐Saharan African region. We show that breeding for high biomass will not optimize canopy CO(2) assimilation and suggest that selection should include multiple canopy traits to improve light penetration. |
format | Online Article Text |
id | pubmed-7757253 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | John Wiley and Sons Inc. |
record_format | MEDLINE/PubMed |
spelling | pubmed-77572532020-12-28 Assessing diversity in canopy architecture, photosynthesis, and water‐use efficiency in a cowpea magic population Digrado, Anthony Mitchell, Noah G. Montes, Christopher M. Dirvanskyte, Paulina Ainsworth, Elizabeth A. Food Energy Secur Original Research Optimizing crops to improve light absorption and CO(2) assimilation throughout the canopy is a proposed strategy to increase yield and meet the needs of a growing population by 2050. Globally, the greatest population increase is expected to occur in Sub‐Saharan Africa where large yield gaps currently persist; therefore, it is crucial to develop high‐yielding crops adapted to this region. In this study, we screened 50 cowpea (Vigna unguiculata (L.) Walp) genotypes from the multi‐parent advanced generation inter‐cross (MAGIC) population for canopy architectural traits, canopy photosynthesis, and water‐use efficiency using a canopy gas exchange chamber in order to improve our understanding of the relationships among those traits. Canopy architecture contributed to 38.6% of the variance observed in canopy photosynthesis. The results suggest that the light environment within the canopy was a limiting factor for canopy CO(2) assimilation. Traits favoring greater exposure of leaf area to light such as the width of the canopy relative to the total leaf area were associated with greater canopy photosynthesis, especially in canopies with high biomass. Canopy water‐use efficiency was highly determined by canopy photosynthetic activity and therefore canopy architecture, which indicates that optimizing the canopy will also contribute to improving canopy water‐use efficiency. We discuss different breeding strategies for future programs aimed at the improvement of cowpea yield for the Sub‐Saharan African region. We show that breeding for high biomass will not optimize canopy CO(2) assimilation and suggest that selection should include multiple canopy traits to improve light penetration. John Wiley and Sons Inc. 2020-08-07 2020-11 /pmc/articles/PMC7757253/ /pubmed/33381299 http://dx.doi.org/10.1002/fes3.236 Text en © 2020 The Authors. Food and Energy Security published by John Wiley & Sons Ltd on behalf of Association of Applied Biologists This is an open access article under the terms of the http://creativecommons.org/licenses/by/4.0/ License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. |
spellingShingle | Original Research Digrado, Anthony Mitchell, Noah G. Montes, Christopher M. Dirvanskyte, Paulina Ainsworth, Elizabeth A. Assessing diversity in canopy architecture, photosynthesis, and water‐use efficiency in a cowpea magic population |
title | Assessing diversity in canopy architecture, photosynthesis, and water‐use efficiency in a cowpea magic population |
title_full | Assessing diversity in canopy architecture, photosynthesis, and water‐use efficiency in a cowpea magic population |
title_fullStr | Assessing diversity in canopy architecture, photosynthesis, and water‐use efficiency in a cowpea magic population |
title_full_unstemmed | Assessing diversity in canopy architecture, photosynthesis, and water‐use efficiency in a cowpea magic population |
title_short | Assessing diversity in canopy architecture, photosynthesis, and water‐use efficiency in a cowpea magic population |
title_sort | assessing diversity in canopy architecture, photosynthesis, and water‐use efficiency in a cowpea magic population |
topic | Original Research |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7757253/ https://www.ncbi.nlm.nih.gov/pubmed/33381299 http://dx.doi.org/10.1002/fes3.236 |
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