Assimilate storage in vegetative organs of coconut (Cocos nucifera)
Assimilate storage in vegetative organs is an essential buffer for the source-sink imbalances that inevitably occur in perennial plants. In contrast to temperate trees, little information is available on such storage in tropical perennials, and almost none for Cocos nucifera. This paper describes the chemical nature, quantity and distribution of carbohydrate reserves in coconut plants grown in an environment favourable to production. The study was carried out on the island of Santo (Republic of Vanuatu, Southern Pacific) on twelve 17-year-old adult plants, representative of a large population, which were felled and characterized for root, trunk and crown dry matter, and contents of soluble sugars and starch. Roots were divided into three diameter classes and distal/proximal portions, the trunk into three axial and three or four radial zones, and the crown into petiole, rachis and leaflets for various leaf ages. The aggregate reserve pool size was compared with estimates of incremental demand for assimilates for growth and fruit production. Plants contained little starch but large quantities of sucrose were found, mainly located in the trunk. Less sucrose was present in roots and little in leaf blades. Large glucose and fructose pools were found in leaves, near the apex of the trunk and in the terminal portions of large roots. Aggregate soluble and non-soluble sugar pools were about equivalent to six months of copra production or 51 days of crop growth. More studies are needed on the dynamics of these sugars to evaluate their physiological role, particularly with regards to stress periods and fluctuating demand for fruit filling.
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Subjects: | F62 - Physiologie végétale - Croissance et développement, Cocos nucifera, organe de réserve, teneur en glucides, physiologie végétale, feuille, racine, http://aims.fao.org/aos/agrovoc/c_1716, http://aims.fao.org/aos/agrovoc/c_7430, http://aims.fao.org/aos/agrovoc/c_1298, http://aims.fao.org/aos/agrovoc/c_25189, http://aims.fao.org/aos/agrovoc/c_4243, http://aims.fao.org/aos/agrovoc/c_6651, |
Online Access: | http://agritrop.cirad.fr/527430/ http://agritrop.cirad.fr/527430/1/527430.pdf |
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dig-cirad-fr-5274302024-01-28T13:45:20Z http://agritrop.cirad.fr/527430/ http://agritrop.cirad.fr/527430/ Assimilate storage in vegetative organs of coconut (Cocos nucifera). Mialet-Serra Isabelle, Clément Anne, Sonderegger Nicole, Roupsard Olivier, Jourdan Christophe, Labouisse Jean-Pierre, Dingkuhn Michaël. 2005. Experimental Agriculture, 41 : 161-174.https://doi.org/10.1017/S0014479704002467 <https://doi.org/10.1017/S0014479704002467> Assimilate storage in vegetative organs of coconut (Cocos nucifera) Mialet-Serra, Isabelle Clément, Anne Sonderegger, Nicole Roupsard, Olivier Jourdan, Christophe Labouisse, Jean-Pierre Dingkuhn, Michaël eng 2005 Experimental Agriculture F62 - Physiologie végétale - Croissance et développement Cocos nucifera organe de réserve teneur en glucides physiologie végétale feuille racine http://aims.fao.org/aos/agrovoc/c_1716 http://aims.fao.org/aos/agrovoc/c_7430 http://aims.fao.org/aos/agrovoc/c_1298 http://aims.fao.org/aos/agrovoc/c_25189 http://aims.fao.org/aos/agrovoc/c_4243 http://aims.fao.org/aos/agrovoc/c_6651 Assimilate storage in vegetative organs is an essential buffer for the source-sink imbalances that inevitably occur in perennial plants. In contrast to temperate trees, little information is available on such storage in tropical perennials, and almost none for Cocos nucifera. This paper describes the chemical nature, quantity and distribution of carbohydrate reserves in coconut plants grown in an environment favourable to production. The study was carried out on the island of Santo (Republic of Vanuatu, Southern Pacific) on twelve 17-year-old adult plants, representative of a large population, which were felled and characterized for root, trunk and crown dry matter, and contents of soluble sugars and starch. Roots were divided into three diameter classes and distal/proximal portions, the trunk into three axial and three or four radial zones, and the crown into petiole, rachis and leaflets for various leaf ages. The aggregate reserve pool size was compared with estimates of incremental demand for assimilates for growth and fruit production. Plants contained little starch but large quantities of sucrose were found, mainly located in the trunk. Less sucrose was present in roots and little in leaf blades. Large glucose and fructose pools were found in leaves, near the apex of the trunk and in the terminal portions of large roots. Aggregate soluble and non-soluble sugar pools were about equivalent to six months of copra production or 51 days of crop growth. More studies are needed on the dynamics of these sugars to evaluate their physiological role, particularly with regards to stress periods and fluctuating demand for fruit filling. article info:eu-repo/semantics/article Journal Article info:eu-repo/semantics/publishedVersion http://agritrop.cirad.fr/527430/1/527430.pdf text Cirad license info:eu-repo/semantics/restrictedAccess https://agritrop.cirad.fr/mention_legale.html https://doi.org/10.1017/S0014479704002467 10.1017/S0014479704002467 http://catalogue-bibliotheques.cirad.fr/cgi-bin/koha/opac-detail.pl?biblionumber=187072 info:eu-repo/semantics/altIdentifier/doi/10.1017/S0014479704002467 info:eu-repo/semantics/altIdentifier/purl/https://doi.org/10.1017/S0014479704002467 |
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F62 - Physiologie végétale - Croissance et développement Cocos nucifera organe de réserve teneur en glucides physiologie végétale feuille racine http://aims.fao.org/aos/agrovoc/c_1716 http://aims.fao.org/aos/agrovoc/c_7430 http://aims.fao.org/aos/agrovoc/c_1298 http://aims.fao.org/aos/agrovoc/c_25189 http://aims.fao.org/aos/agrovoc/c_4243 http://aims.fao.org/aos/agrovoc/c_6651 F62 - Physiologie végétale - Croissance et développement Cocos nucifera organe de réserve teneur en glucides physiologie végétale feuille racine http://aims.fao.org/aos/agrovoc/c_1716 http://aims.fao.org/aos/agrovoc/c_7430 http://aims.fao.org/aos/agrovoc/c_1298 http://aims.fao.org/aos/agrovoc/c_25189 http://aims.fao.org/aos/agrovoc/c_4243 http://aims.fao.org/aos/agrovoc/c_6651 |
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F62 - Physiologie végétale - Croissance et développement Cocos nucifera organe de réserve teneur en glucides physiologie végétale feuille racine http://aims.fao.org/aos/agrovoc/c_1716 http://aims.fao.org/aos/agrovoc/c_7430 http://aims.fao.org/aos/agrovoc/c_1298 http://aims.fao.org/aos/agrovoc/c_25189 http://aims.fao.org/aos/agrovoc/c_4243 http://aims.fao.org/aos/agrovoc/c_6651 F62 - Physiologie végétale - Croissance et développement Cocos nucifera organe de réserve teneur en glucides physiologie végétale feuille racine http://aims.fao.org/aos/agrovoc/c_1716 http://aims.fao.org/aos/agrovoc/c_7430 http://aims.fao.org/aos/agrovoc/c_1298 http://aims.fao.org/aos/agrovoc/c_25189 http://aims.fao.org/aos/agrovoc/c_4243 http://aims.fao.org/aos/agrovoc/c_6651 Mialet-Serra, Isabelle Clément, Anne Sonderegger, Nicole Roupsard, Olivier Jourdan, Christophe Labouisse, Jean-Pierre Dingkuhn, Michaël Assimilate storage in vegetative organs of coconut (Cocos nucifera) |
description |
Assimilate storage in vegetative organs is an essential buffer for the source-sink imbalances that inevitably occur in perennial plants. In contrast to temperate trees, little information is available on such storage in tropical perennials, and almost none for Cocos nucifera. This paper describes the chemical nature, quantity and distribution of carbohydrate reserves in coconut plants grown in an environment favourable to production. The study was carried out on the island of Santo (Republic of Vanuatu, Southern Pacific) on twelve 17-year-old adult plants, representative of a large population, which were felled and characterized for root, trunk and crown dry matter, and contents of soluble sugars and starch. Roots were divided into three diameter classes and distal/proximal portions, the trunk into three axial and three or four radial zones, and the crown into petiole, rachis and leaflets for various leaf ages. The aggregate reserve pool size was compared with estimates of incremental demand for assimilates for growth and fruit production. Plants contained little starch but large quantities of sucrose were found, mainly located in the trunk. Less sucrose was present in roots and little in leaf blades. Large glucose and fructose pools were found in leaves, near the apex of the trunk and in the terminal portions of large roots. Aggregate soluble and non-soluble sugar pools were about equivalent to six months of copra production or 51 days of crop growth. More studies are needed on the dynamics of these sugars to evaluate their physiological role, particularly with regards to stress periods and fluctuating demand for fruit filling. |
format |
article |
topic_facet |
F62 - Physiologie végétale - Croissance et développement Cocos nucifera organe de réserve teneur en glucides physiologie végétale feuille racine http://aims.fao.org/aos/agrovoc/c_1716 http://aims.fao.org/aos/agrovoc/c_7430 http://aims.fao.org/aos/agrovoc/c_1298 http://aims.fao.org/aos/agrovoc/c_25189 http://aims.fao.org/aos/agrovoc/c_4243 http://aims.fao.org/aos/agrovoc/c_6651 |
author |
Mialet-Serra, Isabelle Clément, Anne Sonderegger, Nicole Roupsard, Olivier Jourdan, Christophe Labouisse, Jean-Pierre Dingkuhn, Michaël |
author_facet |
Mialet-Serra, Isabelle Clément, Anne Sonderegger, Nicole Roupsard, Olivier Jourdan, Christophe Labouisse, Jean-Pierre Dingkuhn, Michaël |
author_sort |
Mialet-Serra, Isabelle |
title |
Assimilate storage in vegetative organs of coconut (Cocos nucifera) |
title_short |
Assimilate storage in vegetative organs of coconut (Cocos nucifera) |
title_full |
Assimilate storage in vegetative organs of coconut (Cocos nucifera) |
title_fullStr |
Assimilate storage in vegetative organs of coconut (Cocos nucifera) |
title_full_unstemmed |
Assimilate storage in vegetative organs of coconut (Cocos nucifera) |
title_sort |
assimilate storage in vegetative organs of coconut (cocos nucifera) |
url |
http://agritrop.cirad.fr/527430/ http://agritrop.cirad.fr/527430/1/527430.pdf |
work_keys_str_mv |
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_version_ |
1792496228492115968 |