Using rapid fluorescence for phenotyping C source regulation by drought and its impact on growth in contrasted biomass sorghum genotypes

Biomass sorghum diversity offers the opportunity to develop multipurpose genotypes combining high grain and ligno-cellulosic biomass productions. It also provides a large spectrum of adaptive traits, particularly to drought. Sorghum breeding is thus of major interest for semi-arid, drought prone cropping environments as met in West Africa, to improve conjointly food and feed productions. This is the objective of the BIOSORG project that firstly aims to understand the elemental traits contributing to combine biomass and grain production and their stability under drought. Sorghum biomass accumulation depends both on C source (photosynthetic) and sink (organ development rate, number, size) processes. While sink strength related traits are commonly phenotyped and known to vary across sorghum genetic diversity, it is not the case regarding photosynthetic processes, much more difficult to measure to a large scale. Accordingly the impact of drought on C source-sink balance is in general not apprehended in the process of large population phenotyping. The present study aims to explore the relevance of modulated fluorescence for a large scale phenotyping, as a proxy of photosynthetic performance, of biomass sorghum genotypes under contrasted water situations. A field trial comparing two water treatments during stem elongation phase was carried out in 2013 and 2014 on 4 biomass sorghum hybrids in order to explore the relationship between leaf chlorophyll fluorescence (measured with a Walz PAM-2500) and photosynthetic level (measured with a Walz GFS-3000), their regulation by drought and their genotypic variability. 2014 trial was extended considering 12 more contrasted genotypes to confirm the relation on a larger diversity. The confirmation of the relationship between fluorescence and photosynthetic parameters, the genotypic variability of the Drought Factor Index (DFI) will be presented as well as a first appraisal of its relationship, across genotypes, with sink organ growth regulation by drought.

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Main Authors: Perrier, Lisa, Roques, Sandrine, Sartre, Pascal, Luquet, Delphine, Fabre, Denis
Format: conference_item biblioteca
Language:eng
Published: INRA-Transfert
Subjects:F30 - Génétique et amélioration des plantes, U30 - Méthodes de recherche, F62 - Physiologie végétale - Croissance et développement, H50 - Troubles divers des plantes,
Online Access:http://agritrop.cirad.fr/580100/
http://agritrop.cirad.fr/580100/2/ID580100_.pdf
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spelling dig-cirad-fr-5801002022-04-15T14:11:04Z http://agritrop.cirad.fr/580100/ http://agritrop.cirad.fr/580100/ Using rapid fluorescence for phenotyping C source regulation by drought and its impact on growth in contrasted biomass sorghum genotypes. Perrier Lisa, Roques Sandrine, Sartre Pascal, Luquet Delphine, Fabre Denis. 2015. In : Recent progress in drought tolerance: from genetics to modelling conference handbook. Tardieu F. (ed.), Draye X. (ed.), Charcosset A. (ed.), Hammer G. (ed.), Usadel B. (ed.), Tuberosa R. (ed.), Welker C. (ed.), Boerner A. (ed.), Simic D.(ed.), Boller B. (ed.). Eucarpia, INRA. Montpellier : INRA-Transfert, Résumé, 44. EUCARPIA Conference "Recent progress in drought tolerance: from genetics to modelling", Montpellier, France, 8 Juin 2015/9 Juin 2015.https://colloque.inra.fr/drought-tolerant_plants_2015/Proceedings <https://colloque.inra.fr/drought-tolerant_plants_2015/Proceedings> Researchers Using rapid fluorescence for phenotyping C source regulation by drought and its impact on growth in contrasted biomass sorghum genotypes Perrier, Lisa Roques, Sandrine Sartre, Pascal Luquet, Delphine Fabre, Denis eng 2015 INRA-Transfert Recent progress in drought tolerance: from genetics to modelling conference handbook F30 - Génétique et amélioration des plantes U30 - Méthodes de recherche F62 - Physiologie végétale - Croissance et développement H50 - Troubles divers des plantes Biomass sorghum diversity offers the opportunity to develop multipurpose genotypes combining high grain and ligno-cellulosic biomass productions. It also provides a large spectrum of adaptive traits, particularly to drought. Sorghum breeding is thus of major interest for semi-arid, drought prone cropping environments as met in West Africa, to improve conjointly food and feed productions. This is the objective of the BIOSORG project that firstly aims to understand the elemental traits contributing to combine biomass and grain production and their stability under drought. Sorghum biomass accumulation depends both on C source (photosynthetic) and sink (organ development rate, number, size) processes. While sink strength related traits are commonly phenotyped and known to vary across sorghum genetic diversity, it is not the case regarding photosynthetic processes, much more difficult to measure to a large scale. Accordingly the impact of drought on C source-sink balance is in general not apprehended in the process of large population phenotyping. The present study aims to explore the relevance of modulated fluorescence for a large scale phenotyping, as a proxy of photosynthetic performance, of biomass sorghum genotypes under contrasted water situations. A field trial comparing two water treatments during stem elongation phase was carried out in 2013 and 2014 on 4 biomass sorghum hybrids in order to explore the relationship between leaf chlorophyll fluorescence (measured with a Walz PAM-2500) and photosynthetic level (measured with a Walz GFS-3000), their regulation by drought and their genotypic variability. 2014 trial was extended considering 12 more contrasted genotypes to confirm the relation on a larger diversity. The confirmation of the relationship between fluorescence and photosynthetic parameters, the genotypic variability of the Drought Factor Index (DFI) will be presented as well as a first appraisal of its relationship, across genotypes, with sink organ growth regulation by drought. conference_item info:eu-repo/semantics/conferenceObject Conference info:eu-repo/semantics/publishedVersion http://agritrop.cirad.fr/580100/2/ID580100_.pdf text Cirad license info:eu-repo/semantics/restrictedAccess https://agritrop.cirad.fr/mention_legale.html https://colloque.inra.fr/drought-tolerant_plants_2015/Proceedings info:eu-repo/semantics/altIdentifier/purl/https://colloque.inra.fr/drought-tolerant_plants_2015/Proceedings
institution CIRAD FR
collection DSpace
country Francia
countrycode FR
component Bibliográfico
access En linea
databasecode dig-cirad-fr
tag biblioteca
region Europa del Oeste
libraryname Biblioteca del CIRAD Francia
language eng
topic F30 - Génétique et amélioration des plantes
U30 - Méthodes de recherche
F62 - Physiologie végétale - Croissance et développement
H50 - Troubles divers des plantes
F30 - Génétique et amélioration des plantes
U30 - Méthodes de recherche
F62 - Physiologie végétale - Croissance et développement
H50 - Troubles divers des plantes
spellingShingle F30 - Génétique et amélioration des plantes
U30 - Méthodes de recherche
F62 - Physiologie végétale - Croissance et développement
H50 - Troubles divers des plantes
F30 - Génétique et amélioration des plantes
U30 - Méthodes de recherche
F62 - Physiologie végétale - Croissance et développement
H50 - Troubles divers des plantes
Perrier, Lisa
Roques, Sandrine
Sartre, Pascal
Luquet, Delphine
Fabre, Denis
Using rapid fluorescence for phenotyping C source regulation by drought and its impact on growth in contrasted biomass sorghum genotypes
description Biomass sorghum diversity offers the opportunity to develop multipurpose genotypes combining high grain and ligno-cellulosic biomass productions. It also provides a large spectrum of adaptive traits, particularly to drought. Sorghum breeding is thus of major interest for semi-arid, drought prone cropping environments as met in West Africa, to improve conjointly food and feed productions. This is the objective of the BIOSORG project that firstly aims to understand the elemental traits contributing to combine biomass and grain production and their stability under drought. Sorghum biomass accumulation depends both on C source (photosynthetic) and sink (organ development rate, number, size) processes. While sink strength related traits are commonly phenotyped and known to vary across sorghum genetic diversity, it is not the case regarding photosynthetic processes, much more difficult to measure to a large scale. Accordingly the impact of drought on C source-sink balance is in general not apprehended in the process of large population phenotyping. The present study aims to explore the relevance of modulated fluorescence for a large scale phenotyping, as a proxy of photosynthetic performance, of biomass sorghum genotypes under contrasted water situations. A field trial comparing two water treatments during stem elongation phase was carried out in 2013 and 2014 on 4 biomass sorghum hybrids in order to explore the relationship between leaf chlorophyll fluorescence (measured with a Walz PAM-2500) and photosynthetic level (measured with a Walz GFS-3000), their regulation by drought and their genotypic variability. 2014 trial was extended considering 12 more contrasted genotypes to confirm the relation on a larger diversity. The confirmation of the relationship between fluorescence and photosynthetic parameters, the genotypic variability of the Drought Factor Index (DFI) will be presented as well as a first appraisal of its relationship, across genotypes, with sink organ growth regulation by drought.
format conference_item
topic_facet F30 - Génétique et amélioration des plantes
U30 - Méthodes de recherche
F62 - Physiologie végétale - Croissance et développement
H50 - Troubles divers des plantes
author Perrier, Lisa
Roques, Sandrine
Sartre, Pascal
Luquet, Delphine
Fabre, Denis
author_facet Perrier, Lisa
Roques, Sandrine
Sartre, Pascal
Luquet, Delphine
Fabre, Denis
author_sort Perrier, Lisa
title Using rapid fluorescence for phenotyping C source regulation by drought and its impact on growth in contrasted biomass sorghum genotypes
title_short Using rapid fluorescence for phenotyping C source regulation by drought and its impact on growth in contrasted biomass sorghum genotypes
title_full Using rapid fluorescence for phenotyping C source regulation by drought and its impact on growth in contrasted biomass sorghum genotypes
title_fullStr Using rapid fluorescence for phenotyping C source regulation by drought and its impact on growth in contrasted biomass sorghum genotypes
title_full_unstemmed Using rapid fluorescence for phenotyping C source regulation by drought and its impact on growth in contrasted biomass sorghum genotypes
title_sort using rapid fluorescence for phenotyping c source regulation by drought and its impact on growth in contrasted biomass sorghum genotypes
publisher INRA-Transfert
url http://agritrop.cirad.fr/580100/
http://agritrop.cirad.fr/580100/2/ID580100_.pdf
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