Floral quality and inflorescence architecture in Olea europaea 'Arauco' (La Rioja, Argentina)

Floral quality is often overlooked as being one of the key yield determinants in olive. One aspect of floral quality is the number of perfect hermaphroditic flowers with both male and female reproductive parts relative to imperfect, staminate (male) flowers. We assessed inflorescence density, number...

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Detalles Bibliográficos
Autores principales: Brizuela, M.M., Fernández, F.J., Searles, P.S., Torres M., Searles P., Vita Serman F.
Formato: SER
Materias:
Branch orientation
Crop load
Imperfect flowers
Inflorescences
Perfect flowers
Olea europaea
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_05677572_v1057_n_p95_Brizuela
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
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spelling todo:paper_05677572_v1057_n_p95_Brizuela2023-10-03T15:35:52Z Floral quality and inflorescence architecture in Olea europaea 'Arauco' (La Rioja, Argentina) Brizuela, M.M. Fernández, F.J. Searles, P.S. Torres M. Searles P. Vita Serman F. Branch orientation Crop load Imperfect flowers Inflorescences Perfect flowers Olea europaea Floral quality is often overlooked as being one of the key yield determinants in olive. One aspect of floral quality is the number of perfect hermaphroditic flowers with both male and female reproductive parts relative to imperfect, staminate (male) flowers. We assessed inflorescence density, number of perfect and imperfect flowers, and inflorescence architecture in the cultivar 'Arauco' on the north- and south-sides of six 40-year-old trees growing in a small traditional orchard with a 10x10 m planting density in Aimogasta (La Rioja, Argentina). Some complementary measurements were done in a second orchard. A trade-off was found in the first orchard between inflorescence density and floral quality with inflorescence density being less on the north side of the trees versus the south, while the number of perfect flowers showed the opposite pattern. This phenomenon led to a negative relationship between inflorescence density and percentage of perfect flowers per inflorescence. Comparing the two orchards, the well-irrigated and fertilized first orchard that received flood irrigation every two weeks and manure as fertilizer had the greatest percentage of perfect flowers at the most terminal position on the inflorescence. In contrast, the second orchard received only occasional flood irrigation and no fertilization, had fewer perfect flowers, and the perfect flowers (%) were not greater at the terminal position than more basal branch positions. As a whole, these results show that both biological factors such as inflorescence density and orchard management strongly affect floral quality in the Argentinean cultivar 'Arauco'. Detailed experimental studies are needed to better understand the various influences on floral quality and inflorescence architecture. © 2014, International Society for Horticultural Science. All rights reserved. Fil:Brizuela, M.M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. SER info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_05677572_v1057_n_p95_Brizuela
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Branch orientation
Crop load
Imperfect flowers
Inflorescences
Perfect flowers
Olea europaea
spellingShingle Branch orientation
Crop load
Imperfect flowers
Inflorescences
Perfect flowers
Olea europaea
Brizuela, M.M.
Fernández, F.J.
Searles, P.S.
Torres M.
Searles P.
Vita Serman F.
Floral quality and inflorescence architecture in Olea europaea 'Arauco' (La Rioja, Argentina)
topic_facet Branch orientation
Crop load
Imperfect flowers
Inflorescences
Perfect flowers
Olea europaea
description Floral quality is often overlooked as being one of the key yield determinants in olive. One aspect of floral quality is the number of perfect hermaphroditic flowers with both male and female reproductive parts relative to imperfect, staminate (male) flowers. We assessed inflorescence density, number of perfect and imperfect flowers, and inflorescence architecture in the cultivar 'Arauco' on the north- and south-sides of six 40-year-old trees growing in a small traditional orchard with a 10x10 m planting density in Aimogasta (La Rioja, Argentina). Some complementary measurements were done in a second orchard. A trade-off was found in the first orchard between inflorescence density and floral quality with inflorescence density being less on the north side of the trees versus the south, while the number of perfect flowers showed the opposite pattern. This phenomenon led to a negative relationship between inflorescence density and percentage of perfect flowers per inflorescence. Comparing the two orchards, the well-irrigated and fertilized first orchard that received flood irrigation every two weeks and manure as fertilizer had the greatest percentage of perfect flowers at the most terminal position on the inflorescence. In contrast, the second orchard received only occasional flood irrigation and no fertilization, had fewer perfect flowers, and the perfect flowers (%) were not greater at the terminal position than more basal branch positions. As a whole, these results show that both biological factors such as inflorescence density and orchard management strongly affect floral quality in the Argentinean cultivar 'Arauco'. Detailed experimental studies are needed to better understand the various influences on floral quality and inflorescence architecture. © 2014, International Society for Horticultural Science. All rights reserved.
format SER
author Brizuela, M.M.
Fernández, F.J.
Searles, P.S.
Torres M.
Searles P.
Vita Serman F.
author_facet Brizuela, M.M.
Fernández, F.J.
Searles, P.S.
Torres M.
Searles P.
Vita Serman F.
author_sort Brizuela, M.M.
title Floral quality and inflorescence architecture in Olea europaea 'Arauco' (La Rioja, Argentina)
title_short Floral quality and inflorescence architecture in Olea europaea 'Arauco' (La Rioja, Argentina)
title_full Floral quality and inflorescence architecture in Olea europaea 'Arauco' (La Rioja, Argentina)
title_fullStr Floral quality and inflorescence architecture in Olea europaea 'Arauco' (La Rioja, Argentina)
title_full_unstemmed Floral quality and inflorescence architecture in Olea europaea 'Arauco' (La Rioja, Argentina)
title_sort floral quality and inflorescence architecture in olea europaea 'arauco' (la rioja, argentina)
url http://hdl.handle.net/20.500.12110/paper_05677572_v1057_n_p95_Brizuela
work_keys_str_mv AT brizuelamm floralqualityandinflorescencearchitectureinoleaeuropaeaaraucolariojaargentina
AT fernandezfj floralqualityandinflorescencearchitectureinoleaeuropaeaaraucolariojaargentina
AT searlesps floralqualityandinflorescencearchitectureinoleaeuropaeaaraucolariojaargentina
AT torresm floralqualityandinflorescencearchitectureinoleaeuropaeaaraucolariojaargentina
AT searlesp floralqualityandinflorescencearchitectureinoleaeuropaeaaraucolariojaargentina
AT vitasermanf floralqualityandinflorescencearchitectureinoleaeuropaeaaraucolariojaargentina
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