Dwarfing mechanisms of Prunus species as interstems and rootstocks on peach [Prunus persica (L.) Batsch] tree vegetative growth and physiology

Autores
Weibel, Antonio Marcelo
Año de publicación
2008
Idioma
inglés
Tipo de recurso
tesis doctoral
Estado
versión aceptada
Colaborador/a o director/a de tesis
Reighard, Gregory L.
Descripción
Tesis para obtener el grado de Doctor of Philosophy Plant and Environmental Sciences, de Clemson University, diciembre 2008
The use of small trees in orchard systems reduces manual labor (pruning, thinning and harvesting), and induces precocity, thus making high-density plantations economically advantageous, which has elicited an interest in size-controlling rootstocks. However, the mechanisms involved in the reduction of scion growth by the rootstock are not well understood. The main objective of this study was to gain a better understanding of the dwarfing mechanism induced by size-controlling peach rootstocks. The relationship among different rootstocks (dwarfing to invigorating range) as to stored carbohydrates, tree water status, and interstem and grafting height was evaluated on young and mature `Redhaven' and `Redtop' peach trees in California, Georgia and South Carolina. The main rootstocks involved in the study were Cadaman® (vigorous), Lovell (control), Pumiselect® (semivigorous), Controller® 5 (semivigorous), and Krymsk® 1 (more size-controlling). Greater concentrations of TNC were found in `Redhaven' and `Redtop' roots in California compared to the other two sites; however, shoot TNC did not differ significantly among sites. Concentration of TNC in roots were at least two fold compared to shoot TNC concentration. About 70% of total non-structural carbohydrates were accumulated in root tissues, where smaller roots accounted for most of the carbohydrates (>80%). The more vigorous rootstocks not only had the higher accumulation of dormant carbohydrates but also the highest root and shoot dry weight per tree, suggesting that the initial difference in new spring growth could be the result of these growth components. Rootstock genotypes used as interstems and not the grafting height affected the size of `Redhaven' trees in the studied combinations. Krymsk® 1 and Pumiselect® interstem trees were 81% and 88%, respectively, the size of Lovell trees at the end of the first year, while Krymsk® 1 interstem trees were almost 50% of the control at the end of second year. Budding height did not affected significanltly scion growth, however a tendency was observed when trees on Krymsk® 1 had reduced growth when grafted at higher height. These data suggest the dwarfing mechanism in some Prunus rootstocks involves other plant tissues rather than roots. There was a positive correlation between scion vegetative growth as affected by rootstock and tree water status. In addition, the results suggested that the seasonal changes in dry matter production and partitioning found in two peach cultivars may be influenced, at least in part, by seasonal variations in stem water potential, stomatal conductance and transpiration rates. Xylem vessel diameters of Lovell rootstocks were two fold greater than those of Krymsk® 1 rootstocks. The results also suggested that in peach rootstocks the main hydraulic resistance might be located at the root such as the case of Krymsk® 1 or graft union interface as in Pumiselect®; so, depending on genotype combinations.
EEA Junín
Fil: Weibel, Antonio Marcelo. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Junín; Argentina
Materia
Durazno
Prunus Persica
Stems
Portainjertos
Portainjertos Enanizantes
Crecimiento
Fisiología Vegetal
Peaches
Tallos
Rootstocks
Dwarfing Rootstocks
Growth
Plant Physiology
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by-nc-sa/4.0/
Repositorio
INTA Digital (INTA)
Institución
Instituto Nacional de Tecnología Agropecuaria
OAI Identificador
oai:localhost:20.500.12123/6867

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oai_identifier_str oai:localhost:20.500.12123/6867
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spelling Dwarfing mechanisms of Prunus species as interstems and rootstocks on peach [Prunus persica (L.) Batsch] tree vegetative growth and physiologyWeibel, Antonio MarceloDuraznoPrunus PersicaStemsPortainjertosPortainjertos EnanizantesCrecimientoFisiología VegetalPeachesTallosRootstocksDwarfing RootstocksGrowthPlant PhysiologyTesis para obtener el grado de Doctor of Philosophy Plant and Environmental Sciences, de Clemson University, diciembre 2008The use of small trees in orchard systems reduces manual labor (pruning, thinning and harvesting), and induces precocity, thus making high-density plantations economically advantageous, which has elicited an interest in size-controlling rootstocks. However, the mechanisms involved in the reduction of scion growth by the rootstock are not well understood. The main objective of this study was to gain a better understanding of the dwarfing mechanism induced by size-controlling peach rootstocks. The relationship among different rootstocks (dwarfing to invigorating range) as to stored carbohydrates, tree water status, and interstem and grafting height was evaluated on young and mature `Redhaven' and `Redtop' peach trees in California, Georgia and South Carolina. The main rootstocks involved in the study were Cadaman® (vigorous), Lovell (control), Pumiselect® (semivigorous), Controller® 5 (semivigorous), and Krymsk® 1 (more size-controlling). Greater concentrations of TNC were found in `Redhaven' and `Redtop' roots in California compared to the other two sites; however, shoot TNC did not differ significantly among sites. Concentration of TNC in roots were at least two fold compared to shoot TNC concentration. About 70% of total non-structural carbohydrates were accumulated in root tissues, where smaller roots accounted for most of the carbohydrates (>80%). The more vigorous rootstocks not only had the higher accumulation of dormant carbohydrates but also the highest root and shoot dry weight per tree, suggesting that the initial difference in new spring growth could be the result of these growth components. Rootstock genotypes used as interstems and not the grafting height affected the size of `Redhaven' trees in the studied combinations. Krymsk® 1 and Pumiselect® interstem trees were 81% and 88%, respectively, the size of Lovell trees at the end of the first year, while Krymsk® 1 interstem trees were almost 50% of the control at the end of second year. Budding height did not affected significanltly scion growth, however a tendency was observed when trees on Krymsk® 1 had reduced growth when grafted at higher height. These data suggest the dwarfing mechanism in some Prunus rootstocks involves other plant tissues rather than roots. There was a positive correlation between scion vegetative growth as affected by rootstock and tree water status. In addition, the results suggested that the seasonal changes in dry matter production and partitioning found in two peach cultivars may be influenced, at least in part, by seasonal variations in stem water potential, stomatal conductance and transpiration rates. Xylem vessel diameters of Lovell rootstocks were two fold greater than those of Krymsk® 1 rootstocks. The results also suggested that in peach rootstocks the main hydraulic resistance might be located at the root such as the case of Krymsk® 1 or graft union interface as in Pumiselect®; so, depending on genotype combinations.EEA JunínFil: Weibel, Antonio Marcelo. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Junín; ArgentinaClemson UniversityReighard, Gregory L.2020-03-02T12:40:10Z2020-03-02T12:40:10Z2008-12info:eu-repo/semantics/doctoralThesisinfo:eu-repo/semantics/acceptedVersionhttp://purl.org/coar/resource_type/c_db06info:ar-repo/semantics/tesisDoctoralapplication/pdfhttp://hdl.handle.net/20.500.12123/6867https://tigerprints.clemson.edu/cgi/viewcontent.cgi?article=1301&context=all_dissertationsenginfo:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)reponame:INTA Digital (INTA)instname:Instituto Nacional de Tecnología Agropecuaria2025-09-29T13:44:53Zoai:localhost:20.500.12123/6867instacron:INTAInstitucionalhttp://repositorio.inta.gob.ar/Organismo científico-tecnológicoNo correspondehttp://repositorio.inta.gob.ar/oai/requesttripaldi.nicolas@inta.gob.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:l2025-09-29 13:44:53.903INTA Digital (INTA) - Instituto Nacional de Tecnología Agropecuariafalse
dc.title.none.fl_str_mv Dwarfing mechanisms of Prunus species as interstems and rootstocks on peach [Prunus persica (L.) Batsch] tree vegetative growth and physiology
title Dwarfing mechanisms of Prunus species as interstems and rootstocks on peach [Prunus persica (L.) Batsch] tree vegetative growth and physiology
spellingShingle Dwarfing mechanisms of Prunus species as interstems and rootstocks on peach [Prunus persica (L.) Batsch] tree vegetative growth and physiology
Weibel, Antonio Marcelo
Durazno
Prunus Persica
Stems
Portainjertos
Portainjertos Enanizantes
Crecimiento
Fisiología Vegetal
Peaches
Tallos
Rootstocks
Dwarfing Rootstocks
Growth
Plant Physiology
title_short Dwarfing mechanisms of Prunus species as interstems and rootstocks on peach [Prunus persica (L.) Batsch] tree vegetative growth and physiology
title_full Dwarfing mechanisms of Prunus species as interstems and rootstocks on peach [Prunus persica (L.) Batsch] tree vegetative growth and physiology
title_fullStr Dwarfing mechanisms of Prunus species as interstems and rootstocks on peach [Prunus persica (L.) Batsch] tree vegetative growth and physiology
title_full_unstemmed Dwarfing mechanisms of Prunus species as interstems and rootstocks on peach [Prunus persica (L.) Batsch] tree vegetative growth and physiology
title_sort Dwarfing mechanisms of Prunus species as interstems and rootstocks on peach [Prunus persica (L.) Batsch] tree vegetative growth and physiology
dc.creator.none.fl_str_mv Weibel, Antonio Marcelo
author Weibel, Antonio Marcelo
author_facet Weibel, Antonio Marcelo
author_role author
dc.contributor.none.fl_str_mv Reighard, Gregory L.
dc.subject.none.fl_str_mv Durazno
Prunus Persica
Stems
Portainjertos
Portainjertos Enanizantes
Crecimiento
Fisiología Vegetal
Peaches
Tallos
Rootstocks
Dwarfing Rootstocks
Growth
Plant Physiology
topic Durazno
Prunus Persica
Stems
Portainjertos
Portainjertos Enanizantes
Crecimiento
Fisiología Vegetal
Peaches
Tallos
Rootstocks
Dwarfing Rootstocks
Growth
Plant Physiology
dc.description.none.fl_txt_mv Tesis para obtener el grado de Doctor of Philosophy Plant and Environmental Sciences, de Clemson University, diciembre 2008
The use of small trees in orchard systems reduces manual labor (pruning, thinning and harvesting), and induces precocity, thus making high-density plantations economically advantageous, which has elicited an interest in size-controlling rootstocks. However, the mechanisms involved in the reduction of scion growth by the rootstock are not well understood. The main objective of this study was to gain a better understanding of the dwarfing mechanism induced by size-controlling peach rootstocks. The relationship among different rootstocks (dwarfing to invigorating range) as to stored carbohydrates, tree water status, and interstem and grafting height was evaluated on young and mature `Redhaven' and `Redtop' peach trees in California, Georgia and South Carolina. The main rootstocks involved in the study were Cadaman® (vigorous), Lovell (control), Pumiselect® (semivigorous), Controller® 5 (semivigorous), and Krymsk® 1 (more size-controlling). Greater concentrations of TNC were found in `Redhaven' and `Redtop' roots in California compared to the other two sites; however, shoot TNC did not differ significantly among sites. Concentration of TNC in roots were at least two fold compared to shoot TNC concentration. About 70% of total non-structural carbohydrates were accumulated in root tissues, where smaller roots accounted for most of the carbohydrates (>80%). The more vigorous rootstocks not only had the higher accumulation of dormant carbohydrates but also the highest root and shoot dry weight per tree, suggesting that the initial difference in new spring growth could be the result of these growth components. Rootstock genotypes used as interstems and not the grafting height affected the size of `Redhaven' trees in the studied combinations. Krymsk® 1 and Pumiselect® interstem trees were 81% and 88%, respectively, the size of Lovell trees at the end of the first year, while Krymsk® 1 interstem trees were almost 50% of the control at the end of second year. Budding height did not affected significanltly scion growth, however a tendency was observed when trees on Krymsk® 1 had reduced growth when grafted at higher height. These data suggest the dwarfing mechanism in some Prunus rootstocks involves other plant tissues rather than roots. There was a positive correlation between scion vegetative growth as affected by rootstock and tree water status. In addition, the results suggested that the seasonal changes in dry matter production and partitioning found in two peach cultivars may be influenced, at least in part, by seasonal variations in stem water potential, stomatal conductance and transpiration rates. Xylem vessel diameters of Lovell rootstocks were two fold greater than those of Krymsk® 1 rootstocks. The results also suggested that in peach rootstocks the main hydraulic resistance might be located at the root such as the case of Krymsk® 1 or graft union interface as in Pumiselect®; so, depending on genotype combinations.
EEA Junín
Fil: Weibel, Antonio Marcelo. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Junín; Argentina
description Tesis para obtener el grado de Doctor of Philosophy Plant and Environmental Sciences, de Clemson University, diciembre 2008
publishDate 2008
dc.date.none.fl_str_mv 2008-12
2020-03-02T12:40:10Z
2020-03-02T12:40:10Z
dc.type.none.fl_str_mv info:eu-repo/semantics/doctoralThesis
info:eu-repo/semantics/acceptedVersion
http://purl.org/coar/resource_type/c_db06
info:ar-repo/semantics/tesisDoctoral
format doctoralThesis
status_str acceptedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/20.500.12123/6867
https://tigerprints.clemson.edu/cgi/viewcontent.cgi?article=1301&context=all_dissertations
url http://hdl.handle.net/20.500.12123/6867
https://tigerprints.clemson.edu/cgi/viewcontent.cgi?article=1301&context=all_dissertations
dc.language.none.fl_str_mv eng
language eng
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Clemson University
publisher.none.fl_str_mv Clemson University
dc.source.none.fl_str_mv reponame:INTA Digital (INTA)
instname:Instituto Nacional de Tecnología Agropecuaria
reponame_str INTA Digital (INTA)
collection INTA Digital (INTA)
instname_str Instituto Nacional de Tecnología Agropecuaria
repository.name.fl_str_mv INTA Digital (INTA) - Instituto Nacional de Tecnología Agropecuaria
repository.mail.fl_str_mv tripaldi.nicolas@inta.gob.ar
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