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Genotypic Variation in Grain P Loading across Diverse Rice Growing Environments and Implications for Field P Balances

More than 60% of phosphorus (P) taken up by rice (Oryza spp.) is accumulated in the grains at harvest and hence exported from fields, leading to a continuous removal of P. If P removed from fields is not replaced by P inputs then soil P stocks decline, with consequences for subsequent crops. Breedin...

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Autores principales: Vandamme, Elke, Wissuwa, Matthias, Rose, Terry, Dieng, Ibnou, Drame, Khady N., Fofana, Mamadou, Senthilkumar, Kalimuthu, Venuprasad, Ramaiah, Jallow, Demba, Segda, Zacharie, Suriyagoda, Lalith, Sirisena, Dinarathna, Kato, Yoichiro, Saito, Kazuki
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Frontiers Media S.A. 2016
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5037189/
https://www.ncbi.nlm.nih.gov/pubmed/27729916
http://dx.doi.org/10.3389/fpls.2016.01435
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author Vandamme, Elke
Wissuwa, Matthias
Rose, Terry
Dieng, Ibnou
Drame, Khady N.
Fofana, Mamadou
Senthilkumar, Kalimuthu
Venuprasad, Ramaiah
Jallow, Demba
Segda, Zacharie
Suriyagoda, Lalith
Sirisena, Dinarathna
Kato, Yoichiro
Saito, Kazuki
author_facet Vandamme, Elke
Wissuwa, Matthias
Rose, Terry
Dieng, Ibnou
Drame, Khady N.
Fofana, Mamadou
Senthilkumar, Kalimuthu
Venuprasad, Ramaiah
Jallow, Demba
Segda, Zacharie
Suriyagoda, Lalith
Sirisena, Dinarathna
Kato, Yoichiro
Saito, Kazuki
author_sort Vandamme, Elke
collection PubMed
description More than 60% of phosphorus (P) taken up by rice (Oryza spp.) is accumulated in the grains at harvest and hence exported from fields, leading to a continuous removal of P. If P removed from fields is not replaced by P inputs then soil P stocks decline, with consequences for subsequent crops. Breeding rice genotypes with a low concentration of P in the grains could be a strategy to reduce maintenance fertilizer needs and slow soil P depletion in low input systems. This study aimed to assess variation in grain P concentrations among rice genotypes across diverse environments and evaluate the implications for field P balances at various grain yield levels. Multi-location screening experiments were conducted at different sites across Africa and Asia and yield components and grain P concentrations were determined at harvest. Genotypic variation in grain P concentration was evaluated while considering differences in P supply and grain yield using cluster analysis to group environments and boundary line analysis to determine minimum grain P concentrations at various yield levels. Average grain P concentrations across genotypes varied almost 3-fold among environments, from 1.4 to 3.9 mg g(−1). Minimum grain P concentrations associated with grain yields of 150, 300, and 500 g m(−2) varied between 1.2 and 1.7, 1.3 and 1.8, and 1.7 and 2.2 mg g(−1) among genotypes respectively. Two genotypes, Santhi Sufaid and DJ123, were identified as potential donors for breeding for low grain P concentration. Improvements in P balances that could be achieved by exploiting this genotypic variation are in the range of less than 0.10 g P m(−2) (1 kg P ha(−1)) in low yielding systems, and 0.15–0.50 g P m(−2) (1.5–5.0 kg P ha(−1)) in higher yielding systems. Improved crop management and alternative breeding approaches may be required to achieve larger reductions in grain P concentrations in rice.
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spelling pubmed-50371892016-10-11 Genotypic Variation in Grain P Loading across Diverse Rice Growing Environments and Implications for Field P Balances Vandamme, Elke Wissuwa, Matthias Rose, Terry Dieng, Ibnou Drame, Khady N. Fofana, Mamadou Senthilkumar, Kalimuthu Venuprasad, Ramaiah Jallow, Demba Segda, Zacharie Suriyagoda, Lalith Sirisena, Dinarathna Kato, Yoichiro Saito, Kazuki Front Plant Sci Plant Science More than 60% of phosphorus (P) taken up by rice (Oryza spp.) is accumulated in the grains at harvest and hence exported from fields, leading to a continuous removal of P. If P removed from fields is not replaced by P inputs then soil P stocks decline, with consequences for subsequent crops. Breeding rice genotypes with a low concentration of P in the grains could be a strategy to reduce maintenance fertilizer needs and slow soil P depletion in low input systems. This study aimed to assess variation in grain P concentrations among rice genotypes across diverse environments and evaluate the implications for field P balances at various grain yield levels. Multi-location screening experiments were conducted at different sites across Africa and Asia and yield components and grain P concentrations were determined at harvest. Genotypic variation in grain P concentration was evaluated while considering differences in P supply and grain yield using cluster analysis to group environments and boundary line analysis to determine minimum grain P concentrations at various yield levels. Average grain P concentrations across genotypes varied almost 3-fold among environments, from 1.4 to 3.9 mg g(−1). Minimum grain P concentrations associated with grain yields of 150, 300, and 500 g m(−2) varied between 1.2 and 1.7, 1.3 and 1.8, and 1.7 and 2.2 mg g(−1) among genotypes respectively. Two genotypes, Santhi Sufaid and DJ123, were identified as potential donors for breeding for low grain P concentration. Improvements in P balances that could be achieved by exploiting this genotypic variation are in the range of less than 0.10 g P m(−2) (1 kg P ha(−1)) in low yielding systems, and 0.15–0.50 g P m(−2) (1.5–5.0 kg P ha(−1)) in higher yielding systems. Improved crop management and alternative breeding approaches may be required to achieve larger reductions in grain P concentrations in rice. Frontiers Media S.A. 2016-09-27 /pmc/articles/PMC5037189/ /pubmed/27729916 http://dx.doi.org/10.3389/fpls.2016.01435 Text en Copyright © 2016 Vandamme, Wissuwa, Rose, Dieng, Drame, Fofana, Senthilkumar, Venuprasad, Jallow, Segda, Suriyagoda, Sirisena, Kato and Saito. http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
spellingShingle Plant Science
Vandamme, Elke
Wissuwa, Matthias
Rose, Terry
Dieng, Ibnou
Drame, Khady N.
Fofana, Mamadou
Senthilkumar, Kalimuthu
Venuprasad, Ramaiah
Jallow, Demba
Segda, Zacharie
Suriyagoda, Lalith
Sirisena, Dinarathna
Kato, Yoichiro
Saito, Kazuki
Genotypic Variation in Grain P Loading across Diverse Rice Growing Environments and Implications for Field P Balances
title Genotypic Variation in Grain P Loading across Diverse Rice Growing Environments and Implications for Field P Balances
title_full Genotypic Variation in Grain P Loading across Diverse Rice Growing Environments and Implications for Field P Balances
title_fullStr Genotypic Variation in Grain P Loading across Diverse Rice Growing Environments and Implications for Field P Balances
title_full_unstemmed Genotypic Variation in Grain P Loading across Diverse Rice Growing Environments and Implications for Field P Balances
title_short Genotypic Variation in Grain P Loading across Diverse Rice Growing Environments and Implications for Field P Balances
title_sort genotypic variation in grain p loading across diverse rice growing environments and implications for field p balances
topic Plant Science
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5037189/
https://www.ncbi.nlm.nih.gov/pubmed/27729916
http://dx.doi.org/10.3389/fpls.2016.01435
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