Terminal drought effect on sugar partitioning and metabolism is modulated by leaf stay-green and panicle size in the stem of sweet sorghum (Sorghum bicolor L. Moench)
Background: The benefits of leaf stay-green for maintaining grain filling in sorghum under drought was largely demonstrated. However, its role in the stability of a dual production (grain, stem sugar) in tall sweet sorghum remains to be elucidated. This study aimed to analyze the impact of a post-anthesis drought on sugar accumulation along stem internodes in sweet and tall West-African so:rghum with variable leaf stay-green and grain yield abilities. Methods Four accessions with similar phenology were studied in two consecutive years in the field at the National Agronomic Research Centre (CNRA) of Bambey (Senegal, West Africa) under two post-anthesis water treatments (irrigated, non-irrigated). Plant morphology, stem sugar related traits, grain production, and plant leaf area (PLA) variation were assessed. Carbohydrate contents (sucrose, hexoses, starch) were determined during grain filling in the whole stem juice and at three internode levels: bottom, median, top. Analysis of variance was performed to test post-anthesis water treatment, accession, organ, year effects and their interactions on the studied traits. Results: Panicle dry weight (PDW) was not affected by drought, but strongly varied among years and accessions. The PDW/PLA ratio was negatively correlated with the variation of sucrose and hexoses at the three internodes levels. This carbohydrates reduction was mainly influenced by the PDW. The bigger the panicle the higher the carbohydrates remobilization from the stem to panicle for grain filling. This was mainly shown on accessions G3 and G11 which exhibited low stay green ability. However, G10 with low PDW/PLA ratio and showing higher stay green ability, exhibited a low reduction of total soluble sugars and sucrose and inversely higher increase of hexoses mainly at the median internode. Conclusions: This ability to better maintain green leaf area and high hexoses in the stem under post-flowering drought could be an osmoregulation mechanism to adapt to drought. Therefore, stay-green is an important trait to consider for sweet sorghum breeding and particularly in the objective of developing dual purpose varieties in drought prone environments.
Main Authors: | , , , , , , |
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Format: | article biblioteca |
Language: | eng |
Subjects: | Sorghum bicolor, sorgho en grain, tige, panicule, tolérance à la sécheresse, sorgho sucre, morphologie végétale, hexose, stay-green [EN], http://aims.fao.org/aos/agrovoc/c_7247, http://aims.fao.org/aos/agrovoc/c_7249, http://aims.fao.org/aos/agrovoc/c_7390, http://aims.fao.org/aos/agrovoc/c_24557, http://aims.fao.org/aos/agrovoc/c_14914, http://aims.fao.org/aos/agrovoc/c_92e4fd40, http://aims.fao.org/aos/agrovoc/c_13434, http://aims.fao.org/aos/agrovoc/c_11547, http://aims.fao.org/aos/agrovoc/c_73b0303e, http://aims.fao.org/aos/agrovoc/c_6970, |
Online Access: | http://agritrop.cirad.fr/608301/ http://agritrop.cirad.fr/608301/1/608301.pdf |
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dig-cirad-fr-6083012024-02-12T05:32:40Z http://agritrop.cirad.fr/608301/ http://agritrop.cirad.fr/608301/ Terminal drought effect on sugar partitioning and metabolism is modulated by leaf stay-green and panicle size in the stem of sweet sorghum (Sorghum bicolor L. Moench). Tovignan Klanvi Thierry, Adoukonou-Sagbadja Hubert, Diatta Cyril, Clément-Vidal Anne, Soutiras Armelle, Cissé Ndiaga, Luquet Delphine. 2020. CABI Agriculture and Bioscience, 1:4, 11 p.https://doi.org/10.1186/s43170-020-00003-w <https://doi.org/10.1186/s43170-020-00003-w> Terminal drought effect on sugar partitioning and metabolism is modulated by leaf stay-green and panicle size in the stem of sweet sorghum (Sorghum bicolor L. Moench) Tovignan, Klanvi Thierry Adoukonou-Sagbadja, Hubert Diatta, Cyril Clément-Vidal, Anne Soutiras, Armelle Cissé, Ndiaga Luquet, Delphine eng 2020 CABI Agriculture and Bioscience Sorghum bicolor sorgho en grain tige panicule tolérance à la sécheresse sorgho sucre morphologie végétale hexose stay-green [EN] http://aims.fao.org/aos/agrovoc/c_7247 http://aims.fao.org/aos/agrovoc/c_7249 http://aims.fao.org/aos/agrovoc/c_7390 http://aims.fao.org/aos/agrovoc/c_24557 http://aims.fao.org/aos/agrovoc/c_14914 http://aims.fao.org/aos/agrovoc/c_92e4fd40 http://aims.fao.org/aos/agrovoc/c_13434 http://aims.fao.org/aos/agrovoc/c_11547 http://aims.fao.org/aos/agrovoc/c_73b0303e Sénégal http://aims.fao.org/aos/agrovoc/c_6970 Background: The benefits of leaf stay-green for maintaining grain filling in sorghum under drought was largely demonstrated. However, its role in the stability of a dual production (grain, stem sugar) in tall sweet sorghum remains to be elucidated. This study aimed to analyze the impact of a post-anthesis drought on sugar accumulation along stem internodes in sweet and tall West-African so:rghum with variable leaf stay-green and grain yield abilities. Methods Four accessions with similar phenology were studied in two consecutive years in the field at the National Agronomic Research Centre (CNRA) of Bambey (Senegal, West Africa) under two post-anthesis water treatments (irrigated, non-irrigated). Plant morphology, stem sugar related traits, grain production, and plant leaf area (PLA) variation were assessed. Carbohydrate contents (sucrose, hexoses, starch) were determined during grain filling in the whole stem juice and at three internode levels: bottom, median, top. Analysis of variance was performed to test post-anthesis water treatment, accession, organ, year effects and their interactions on the studied traits. Results: Panicle dry weight (PDW) was not affected by drought, but strongly varied among years and accessions. The PDW/PLA ratio was negatively correlated with the variation of sucrose and hexoses at the three internodes levels. This carbohydrates reduction was mainly influenced by the PDW. The bigger the panicle the higher the carbohydrates remobilization from the stem to panicle for grain filling. This was mainly shown on accessions G3 and G11 which exhibited low stay green ability. However, G10 with low PDW/PLA ratio and showing higher stay green ability, exhibited a low reduction of total soluble sugars and sucrose and inversely higher increase of hexoses mainly at the median internode. Conclusions: This ability to better maintain green leaf area and high hexoses in the stem under post-flowering drought could be an osmoregulation mechanism to adapt to drought. Therefore, stay-green is an important trait to consider for sweet sorghum breeding and particularly in the objective of developing dual purpose varieties in drought prone environments. article info:eu-repo/semantics/article Journal Article info:eu-repo/semantics/publishedVersion http://agritrop.cirad.fr/608301/1/608301.pdf text cc_by info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by/4.0/ https://doi.org/10.1186/s43170-020-00003-w 10.1186/s43170-020-00003-w info:eu-repo/semantics/altIdentifier/doi/10.1186/s43170-020-00003-w info:eu-repo/semantics/altIdentifier/purl/https://doi.org/10.1186/s43170-020-00003-w |
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Sorghum bicolor sorgho en grain tige panicule tolérance à la sécheresse sorgho sucre morphologie végétale hexose stay-green [EN] http://aims.fao.org/aos/agrovoc/c_7247 http://aims.fao.org/aos/agrovoc/c_7249 http://aims.fao.org/aos/agrovoc/c_7390 http://aims.fao.org/aos/agrovoc/c_24557 http://aims.fao.org/aos/agrovoc/c_14914 http://aims.fao.org/aos/agrovoc/c_92e4fd40 http://aims.fao.org/aos/agrovoc/c_13434 http://aims.fao.org/aos/agrovoc/c_11547 http://aims.fao.org/aos/agrovoc/c_73b0303e http://aims.fao.org/aos/agrovoc/c_6970 Sorghum bicolor sorgho en grain tige panicule tolérance à la sécheresse sorgho sucre morphologie végétale hexose stay-green [EN] http://aims.fao.org/aos/agrovoc/c_7247 http://aims.fao.org/aos/agrovoc/c_7249 http://aims.fao.org/aos/agrovoc/c_7390 http://aims.fao.org/aos/agrovoc/c_24557 http://aims.fao.org/aos/agrovoc/c_14914 http://aims.fao.org/aos/agrovoc/c_92e4fd40 http://aims.fao.org/aos/agrovoc/c_13434 http://aims.fao.org/aos/agrovoc/c_11547 http://aims.fao.org/aos/agrovoc/c_73b0303e http://aims.fao.org/aos/agrovoc/c_6970 |
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Sorghum bicolor sorgho en grain tige panicule tolérance à la sécheresse sorgho sucre morphologie végétale hexose stay-green [EN] http://aims.fao.org/aos/agrovoc/c_7247 http://aims.fao.org/aos/agrovoc/c_7249 http://aims.fao.org/aos/agrovoc/c_7390 http://aims.fao.org/aos/agrovoc/c_24557 http://aims.fao.org/aos/agrovoc/c_14914 http://aims.fao.org/aos/agrovoc/c_92e4fd40 http://aims.fao.org/aos/agrovoc/c_13434 http://aims.fao.org/aos/agrovoc/c_11547 http://aims.fao.org/aos/agrovoc/c_73b0303e http://aims.fao.org/aos/agrovoc/c_6970 Sorghum bicolor sorgho en grain tige panicule tolérance à la sécheresse sorgho sucre morphologie végétale hexose stay-green [EN] http://aims.fao.org/aos/agrovoc/c_7247 http://aims.fao.org/aos/agrovoc/c_7249 http://aims.fao.org/aos/agrovoc/c_7390 http://aims.fao.org/aos/agrovoc/c_24557 http://aims.fao.org/aos/agrovoc/c_14914 http://aims.fao.org/aos/agrovoc/c_92e4fd40 http://aims.fao.org/aos/agrovoc/c_13434 http://aims.fao.org/aos/agrovoc/c_11547 http://aims.fao.org/aos/agrovoc/c_73b0303e http://aims.fao.org/aos/agrovoc/c_6970 Tovignan, Klanvi Thierry Adoukonou-Sagbadja, Hubert Diatta, Cyril Clément-Vidal, Anne Soutiras, Armelle Cissé, Ndiaga Luquet, Delphine Terminal drought effect on sugar partitioning and metabolism is modulated by leaf stay-green and panicle size in the stem of sweet sorghum (Sorghum bicolor L. Moench) |
description |
Background: The benefits of leaf stay-green for maintaining grain filling in sorghum under drought was largely demonstrated. However, its role in the stability of a dual production (grain, stem sugar) in tall sweet sorghum remains to be elucidated. This study aimed to analyze the impact of a post-anthesis drought on sugar accumulation along stem internodes in sweet and tall West-African so:rghum with variable leaf stay-green and grain yield abilities. Methods Four accessions with similar phenology were studied in two consecutive years in the field at the National Agronomic Research Centre (CNRA) of Bambey (Senegal, West Africa) under two post-anthesis water treatments (irrigated, non-irrigated). Plant morphology, stem sugar related traits, grain production, and plant leaf area (PLA) variation were assessed. Carbohydrate contents (sucrose, hexoses, starch) were determined during grain filling in the whole stem juice and at three internode levels: bottom, median, top. Analysis of variance was performed to test post-anthesis water treatment, accession, organ, year effects and their interactions on the studied traits. Results: Panicle dry weight (PDW) was not affected by drought, but strongly varied among years and accessions. The PDW/PLA ratio was negatively correlated with the variation of sucrose and hexoses at the three internodes levels. This carbohydrates reduction was mainly influenced by the PDW. The bigger the panicle the higher the carbohydrates remobilization from the stem to panicle for grain filling. This was mainly shown on accessions G3 and G11 which exhibited low stay green ability. However, G10 with low PDW/PLA ratio and showing higher stay green ability, exhibited a low reduction of total soluble sugars and sucrose and inversely higher increase of hexoses mainly at the median internode. Conclusions: This ability to better maintain green leaf area and high hexoses in the stem under post-flowering drought could be an osmoregulation mechanism to adapt to drought. Therefore, stay-green is an important trait to consider for sweet sorghum breeding and particularly in the objective of developing dual purpose varieties in drought prone environments. |
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article |
topic_facet |
Sorghum bicolor sorgho en grain tige panicule tolérance à la sécheresse sorgho sucre morphologie végétale hexose stay-green [EN] http://aims.fao.org/aos/agrovoc/c_7247 http://aims.fao.org/aos/agrovoc/c_7249 http://aims.fao.org/aos/agrovoc/c_7390 http://aims.fao.org/aos/agrovoc/c_24557 http://aims.fao.org/aos/agrovoc/c_14914 http://aims.fao.org/aos/agrovoc/c_92e4fd40 http://aims.fao.org/aos/agrovoc/c_13434 http://aims.fao.org/aos/agrovoc/c_11547 http://aims.fao.org/aos/agrovoc/c_73b0303e http://aims.fao.org/aos/agrovoc/c_6970 |
author |
Tovignan, Klanvi Thierry Adoukonou-Sagbadja, Hubert Diatta, Cyril Clément-Vidal, Anne Soutiras, Armelle Cissé, Ndiaga Luquet, Delphine |
author_facet |
Tovignan, Klanvi Thierry Adoukonou-Sagbadja, Hubert Diatta, Cyril Clément-Vidal, Anne Soutiras, Armelle Cissé, Ndiaga Luquet, Delphine |
author_sort |
Tovignan, Klanvi Thierry |
title |
Terminal drought effect on sugar partitioning and metabolism is modulated by leaf stay-green and panicle size in the stem of sweet sorghum (Sorghum bicolor L. Moench) |
title_short |
Terminal drought effect on sugar partitioning and metabolism is modulated by leaf stay-green and panicle size in the stem of sweet sorghum (Sorghum bicolor L. Moench) |
title_full |
Terminal drought effect on sugar partitioning and metabolism is modulated by leaf stay-green and panicle size in the stem of sweet sorghum (Sorghum bicolor L. Moench) |
title_fullStr |
Terminal drought effect on sugar partitioning and metabolism is modulated by leaf stay-green and panicle size in the stem of sweet sorghum (Sorghum bicolor L. Moench) |
title_full_unstemmed |
Terminal drought effect on sugar partitioning and metabolism is modulated by leaf stay-green and panicle size in the stem of sweet sorghum (Sorghum bicolor L. Moench) |
title_sort |
terminal drought effect on sugar partitioning and metabolism is modulated by leaf stay-green and panicle size in the stem of sweet sorghum (sorghum bicolor l. moench) |
url |
http://agritrop.cirad.fr/608301/ http://agritrop.cirad.fr/608301/1/608301.pdf |
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