Effects of the `Stay Green' Genotype GGd1d1d2d2 on Leaf Gas Exchange, Dry Matter Accumulation and Seed Yield in Soybean (Glycine max L. Merr.)

Autores
Luquez, Virginia Martha Cristina; Guiamet, Juan José
Año de publicación
2001
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The homozygous combination of the recessive mutations d1 and d2, i.e. d1d1d2d2, causes retention of chlorophyll, chlorophyll-binding proteins and Rubisco in senescing leaves of soybean (Glycine max L. Merr.). Together with G (a gene that preserves only chlorophyll in the mature seed coat), d1d1d2d2 prolonged photosynthetic activity and increased seed yield in growth chamber experiments. The objective of this work was to test the effects of GGd1d1d2d2 (abbreviated to Gd1d2) on leaf gas exchange, growth and seed yield in soybean plants cultured outdoors during the normal growing season. Despite preservation of the photosynthetic machinery in Gd1d2, photosynthesis during the seed filling period was similar in Gd1d2 and its near-isogenic wild type line `Clark'. The main factor limiting photosynthesis in the mutant appeared to be stomatal conductance, which was substantially lower in Gd1d2 than in `Clark'. In Gd1d2 the rate of dry matter accumulation during the seed ®lling period was similar or lower than in the wild type. At maturity, Gd1d2 had fewer nodes, fruiting nodes, fruits and seeds per plant, and therefore its seed yield was reduced by 10±20% compared to `Clark'. Thus, pleiotropic effects of G, d1 and/or d2 affecting stomatal conductance and seed number appear to be major limitations to the yield potential of Gd1d2. These pleiotropic effects suggest that G, d1 and/or d2 have regulatory functions in addition to the control of chloroplast disassembly during senescence.
Instituto de Fisiología Vegetal
Materia
Ciencias Agrarias
Glycine max L. Merr., photosynthesis, seed yield, senescence, soybean, stay green, stomatal conductance
Plantas
Soja
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by-nc-nd/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/74999

id SEDICI_2f1f596bca331947cbde8b43eb2893dc
oai_identifier_str oai:sedici.unlp.edu.ar:10915/74999
network_acronym_str SEDICI
repository_id_str 1329
network_name_str SEDICI (UNLP)
spelling Effects of the `Stay Green' Genotype GGd1d1d2d2 on Leaf Gas Exchange, Dry Matter Accumulation and Seed Yield in Soybean (Glycine max L. Merr.)Luquez, Virginia Martha CristinaGuiamet, Juan JoséCiencias AgrariasGlycine max L. Merr., photosynthesis, seed yield, senescence, soybean, stay green, stomatal conductancePlantasSojaThe homozygous combination of the recessive mutations d1 and d2, i.e. d1d1d2d2, causes retention of chlorophyll, chlorophyll-binding proteins and Rubisco in senescing leaves of soybean (Glycine max L. Merr.). Together with G (a gene that preserves only chlorophyll in the mature seed coat), d1d1d2d2 prolonged photosynthetic activity and increased seed yield in growth chamber experiments. The objective of this work was to test the effects of GGd1d1d2d2 (abbreviated to Gd1d2) on leaf gas exchange, growth and seed yield in soybean plants cultured outdoors during the normal growing season. Despite preservation of the photosynthetic machinery in Gd1d2, photosynthesis during the seed filling period was similar in Gd1d2 and its near-isogenic wild type line `Clark'. The main factor limiting photosynthesis in the mutant appeared to be stomatal conductance, which was substantially lower in Gd1d2 than in `Clark'. In Gd1d2 the rate of dry matter accumulation during the seed ®lling period was similar or lower than in the wild type. At maturity, Gd1d2 had fewer nodes, fruiting nodes, fruits and seeds per plant, and therefore its seed yield was reduced by 10±20% compared to `Clark'. Thus, pleiotropic effects of G, d1 and/or d2 affecting stomatal conductance and seed number appear to be major limitations to the yield potential of Gd1d2. These pleiotropic effects suggest that G, d1 and/or d2 have regulatory functions in addition to the control of chloroplast disassembly during senescence.Instituto de Fisiología Vegetal2001info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf313-318http://sedici.unlp.edu.ar/handle/10915/74999enginfo:eu-repo/semantics/altIdentifier/doi/10.1006/anbo.2000.1324info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-nd/4.0/Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-29T11:12:56Zoai:sedici.unlp.edu.ar:10915/74999Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:12:56.334SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Effects of the `Stay Green' Genotype GGd1d1d2d2 on Leaf Gas Exchange, Dry Matter Accumulation and Seed Yield in Soybean (Glycine max L. Merr.)
title Effects of the `Stay Green' Genotype GGd1d1d2d2 on Leaf Gas Exchange, Dry Matter Accumulation and Seed Yield in Soybean (Glycine max L. Merr.)
spellingShingle Effects of the `Stay Green' Genotype GGd1d1d2d2 on Leaf Gas Exchange, Dry Matter Accumulation and Seed Yield in Soybean (Glycine max L. Merr.)
Luquez, Virginia Martha Cristina
Ciencias Agrarias
Glycine max L. Merr., photosynthesis, seed yield, senescence, soybean, stay green, stomatal conductance
Plantas
Soja
title_short Effects of the `Stay Green' Genotype GGd1d1d2d2 on Leaf Gas Exchange, Dry Matter Accumulation and Seed Yield in Soybean (Glycine max L. Merr.)
title_full Effects of the `Stay Green' Genotype GGd1d1d2d2 on Leaf Gas Exchange, Dry Matter Accumulation and Seed Yield in Soybean (Glycine max L. Merr.)
title_fullStr Effects of the `Stay Green' Genotype GGd1d1d2d2 on Leaf Gas Exchange, Dry Matter Accumulation and Seed Yield in Soybean (Glycine max L. Merr.)
title_full_unstemmed Effects of the `Stay Green' Genotype GGd1d1d2d2 on Leaf Gas Exchange, Dry Matter Accumulation and Seed Yield in Soybean (Glycine max L. Merr.)
title_sort Effects of the `Stay Green' Genotype GGd1d1d2d2 on Leaf Gas Exchange, Dry Matter Accumulation and Seed Yield in Soybean (Glycine max L. Merr.)
dc.creator.none.fl_str_mv Luquez, Virginia Martha Cristina
Guiamet, Juan José
author Luquez, Virginia Martha Cristina
author_facet Luquez, Virginia Martha Cristina
Guiamet, Juan José
author_role author
author2 Guiamet, Juan José
author2_role author
dc.subject.none.fl_str_mv Ciencias Agrarias
Glycine max L. Merr., photosynthesis, seed yield, senescence, soybean, stay green, stomatal conductance
Plantas
Soja
topic Ciencias Agrarias
Glycine max L. Merr., photosynthesis, seed yield, senescence, soybean, stay green, stomatal conductance
Plantas
Soja
dc.description.none.fl_txt_mv The homozygous combination of the recessive mutations d1 and d2, i.e. d1d1d2d2, causes retention of chlorophyll, chlorophyll-binding proteins and Rubisco in senescing leaves of soybean (Glycine max L. Merr.). Together with G (a gene that preserves only chlorophyll in the mature seed coat), d1d1d2d2 prolonged photosynthetic activity and increased seed yield in growth chamber experiments. The objective of this work was to test the effects of GGd1d1d2d2 (abbreviated to Gd1d2) on leaf gas exchange, growth and seed yield in soybean plants cultured outdoors during the normal growing season. Despite preservation of the photosynthetic machinery in Gd1d2, photosynthesis during the seed filling period was similar in Gd1d2 and its near-isogenic wild type line `Clark'. The main factor limiting photosynthesis in the mutant appeared to be stomatal conductance, which was substantially lower in Gd1d2 than in `Clark'. In Gd1d2 the rate of dry matter accumulation during the seed ®lling period was similar or lower than in the wild type. At maturity, Gd1d2 had fewer nodes, fruiting nodes, fruits and seeds per plant, and therefore its seed yield was reduced by 10±20% compared to `Clark'. Thus, pleiotropic effects of G, d1 and/or d2 affecting stomatal conductance and seed number appear to be major limitations to the yield potential of Gd1d2. These pleiotropic effects suggest that G, d1 and/or d2 have regulatory functions in addition to the control of chloroplast disassembly during senescence.
Instituto de Fisiología Vegetal
description The homozygous combination of the recessive mutations d1 and d2, i.e. d1d1d2d2, causes retention of chlorophyll, chlorophyll-binding proteins and Rubisco in senescing leaves of soybean (Glycine max L. Merr.). Together with G (a gene that preserves only chlorophyll in the mature seed coat), d1d1d2d2 prolonged photosynthetic activity and increased seed yield in growth chamber experiments. The objective of this work was to test the effects of GGd1d1d2d2 (abbreviated to Gd1d2) on leaf gas exchange, growth and seed yield in soybean plants cultured outdoors during the normal growing season. Despite preservation of the photosynthetic machinery in Gd1d2, photosynthesis during the seed filling period was similar in Gd1d2 and its near-isogenic wild type line `Clark'. The main factor limiting photosynthesis in the mutant appeared to be stomatal conductance, which was substantially lower in Gd1d2 than in `Clark'. In Gd1d2 the rate of dry matter accumulation during the seed ®lling period was similar or lower than in the wild type. At maturity, Gd1d2 had fewer nodes, fruiting nodes, fruits and seeds per plant, and therefore its seed yield was reduced by 10±20% compared to `Clark'. Thus, pleiotropic effects of G, d1 and/or d2 affecting stomatal conductance and seed number appear to be major limitations to the yield potential of Gd1d2. These pleiotropic effects suggest that G, d1 and/or d2 have regulatory functions in addition to the control of chloroplast disassembly during senescence.
publishDate 2001
dc.date.none.fl_str_mv 2001
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Articulo
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://sedici.unlp.edu.ar/handle/10915/74999
url http://sedici.unlp.edu.ar/handle/10915/74999
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1006/anbo.2000.1324
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-nd/4.0/
Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-nd/4.0/
Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0)
dc.format.none.fl_str_mv application/pdf
313-318
dc.source.none.fl_str_mv reponame:SEDICI (UNLP)
instname:Universidad Nacional de La Plata
instacron:UNLP
reponame_str SEDICI (UNLP)
collection SEDICI (UNLP)
instname_str Universidad Nacional de La Plata
instacron_str UNLP
institution UNLP
repository.name.fl_str_mv SEDICI (UNLP) - Universidad Nacional de La Plata
repository.mail.fl_str_mv alira@sedici.unlp.edu.ar
_version_ 1844615999909789696
score 13.070432