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 | Acceso al texto completo restringido a Biblioteca INIA Las Brujas. Por información adicional contacte bibliolb@inia.org.uy. |
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Registro completo
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Biblioteca (s) : |
INIA Las Brujas. |
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Fecha : |
21/02/2014 |
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Actualizado : |
08/10/2019 |
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Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
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Autor : |
SYVERTSEN, J.P.; GOÑI, C.; OTERO, A. |
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Afiliación : |
J. P. SYVERTSEN, University of Florida, United States; CARMEN TERESITA GOÑI ALTUNA, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; ALVARO RICARDO OTERO CAMA, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay. |
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Título : |
Fruit load and canopy shading affect leaf characteristics and net gas exchange of 'Spring' navel orange trees. |
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Fecha de publicación : |
2003 |
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Fuente / Imprenta : |
Tree Physiology, September 2003, Volume 23, Issue 13, Pages 899-906. OPEN ACCESS. |
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ISSN : |
0829-318X |
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DOI : |
10.1093/treephys/23.13.899 |
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Idioma : |
Inglés |
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Notas : |
Article history: Received December 11, 2002 / Accepted March 8, 2003 / Published online August 1, 2003. |
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Contenido : |
ABSTRACT.
Five-year-old 'Spring' navel (Citrus sinensis (L.) Osbeck) orange trees were completely defruited, 50% defruited or left fully laden to study effects of fruit load on concentrations of nitrogen (N) and carbohydrate, net assimilation of CO2 (Ac) and stomatal conductance (g s) of mature leaves on clear winter days just before fruit harvest. Leaves on defruited trees were larger, had higher starch concentrations and greater leaf dry mass per area (LDMa) than leaves on fruited trees. Both Ac and gs were more than 40% lower in sunlit leaves on defruited trees than in sunlit leaves on trees with fruit. Leaves immediately adjacent to fruit were smaller, had lower leaf nitrogen and carbohydrate concentrations, lower LDMa and lower Ac than leaves on non-fruiting branches of the same trees. Removing half the crop increased individual fruit mass, but reduced fruit color development. Half the trees were shaded with 50% shade cloth for 4 months before harvest to determine the effects of lower leaf temperature (T1) and leaf-to-air vapor pressure difference on leaf responses. On relatively warm days when sunlit T1 > 25°C, shade increased Ac and gs, but had no effect on the ratio of internal to ambient CO2 (C i/Ca) concentration in leaves, implying that high mesophyll temperatures in sunlit leaves were more important than gs in limiting Ac. Sunlit leaves were more photoinhibited than shaded leaves on cooler days when T1 < 25°C. Shade decreased total soluble sugar concentrations in leaves, but had no effect on leaf starch concentrations. Shading had no effects on canopy volume, yield or fruit size, but shaded fruit developed better external color than sun-exposed fruit. Overall, the presence of a normal fruit crop resulted in lower foliar carbohydrate concentrations and higher Ac compared with defruited trees, except on warm days when Ac was reduced by high leaf temperatures.
Copyright © 2003, Oxford University Press MenosABSTRACT.
Five-year-old 'Spring' navel (Citrus sinensis (L.) Osbeck) orange trees were completely defruited, 50% defruited or left fully laden to study effects of fruit load on concentrations of nitrogen (N) and carbohydrate, net assimilation of CO2 (Ac) and stomatal conductance (g s) of mature leaves on clear winter days just before fruit harvest. Leaves on defruited trees were larger, had higher starch concentrations and greater leaf dry mass per area (LDMa) than leaves on fruited trees. Both Ac and gs were more than 40% lower in sunlit leaves on defruited trees than in sunlit leaves on trees with fruit. Leaves immediately adjacent to fruit were smaller, had lower leaf nitrogen and carbohydrate concentrations, lower LDMa and lower Ac than leaves on non-fruiting branches of the same trees. Removing half the crop increased individual fruit mass, but reduced fruit color development. Half the trees were shaded with 50% shade cloth for 4 months before harvest to determine the effects of lower leaf temperature (T1) and leaf-to-air vapor pressure difference on leaf responses. On relatively warm days when sunlit T1 > 25°C, shade increased Ac and gs, but had no effect on the ratio of internal to ambient CO2 (C i/Ca) concentration in leaves, implying that high mesophyll temperatures in sunlit leaves were more important than gs in limiting Ac. Sunlit leaves were more photoinhibited than shaded leaves on cooler days when T1 < 25°C. Shade decreased total soluble sugar concentrations in... Presentar Todo |
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Palabras claves : |
Carbohydrates; Chlorophyll fluorescence; Leaf CO2 assimilation; LVPD; Photoinhibition; Soluble sugars; Starch; Stomatal conductance. |
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Asunto categoría : |
F01 Cultivo |
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Marc : |
LEADER 02885naa a2200277 a 4500
001 1012763
005 2019-10-08
008 2003 bl uuuu u00u1 u #d
022 $a0829-318X
024 7 $a10.1093/treephys/23.13.899$2DOI
100 1 $aSYVERTSEN, J.P.
245 $aFruit load and canopy shading affect leaf characteristics and net gas exchange of 'Spring' navel orange trees.$h[electronic resource]
260 $c2003
500 $aArticle history: Received December 11, 2002 / Accepted March 8, 2003 / Published online August 1, 2003.
520 $aABSTRACT. Five-year-old 'Spring' navel (Citrus sinensis (L.) Osbeck) orange trees were completely defruited, 50% defruited or left fully laden to study effects of fruit load on concentrations of nitrogen (N) and carbohydrate, net assimilation of CO2 (Ac) and stomatal conductance (g s) of mature leaves on clear winter days just before fruit harvest. Leaves on defruited trees were larger, had higher starch concentrations and greater leaf dry mass per area (LDMa) than leaves on fruited trees. Both Ac and gs were more than 40% lower in sunlit leaves on defruited trees than in sunlit leaves on trees with fruit. Leaves immediately adjacent to fruit were smaller, had lower leaf nitrogen and carbohydrate concentrations, lower LDMa and lower Ac than leaves on non-fruiting branches of the same trees. Removing half the crop increased individual fruit mass, but reduced fruit color development. Half the trees were shaded with 50% shade cloth for 4 months before harvest to determine the effects of lower leaf temperature (T1) and leaf-to-air vapor pressure difference on leaf responses. On relatively warm days when sunlit T1 > 25°C, shade increased Ac and gs, but had no effect on the ratio of internal to ambient CO2 (C i/Ca) concentration in leaves, implying that high mesophyll temperatures in sunlit leaves were more important than gs in limiting Ac. Sunlit leaves were more photoinhibited than shaded leaves on cooler days when T1 < 25°C. Shade decreased total soluble sugar concentrations in leaves, but had no effect on leaf starch concentrations. Shading had no effects on canopy volume, yield or fruit size, but shaded fruit developed better external color than sun-exposed fruit. Overall, the presence of a normal fruit crop resulted in lower foliar carbohydrate concentrations and higher Ac compared with defruited trees, except on warm days when Ac was reduced by high leaf temperatures. Copyright © 2003, Oxford University Press
653 $aCarbohydrates
653 $aChlorophyll fluorescence
653 $aLeaf CO2 assimilation
653 $aLVPD
653 $aPhotoinhibition
653 $aSoluble sugars
653 $aStarch
653 $aStomatal conductance
700 1 $aGOÑI, C.
700 1 $aOTERO, A.
773 $tTree Physiology, September 2003, Volume 23, Issue 13, Pages 899-906. OPEN ACCESS.
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INIA Las Brujas (LB) |
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| Registros recuperados : 106 | |
| 62. |  | SYVERTSEN, J.P.; GOÑI, C.; OTERO, A. Fruit load and canopy shading affect leaf characteristics and net gas exchange of 'Spring' navel orange trees. Tree Physiology, September 2003, Volume 23, Issue 13, Pages 899-906. OPEN ACCESS. Article history: Received December 11, 2002 / Accepted March 8, 2003 / Published online August 1, 2003.| Tipo: Artículos en Revistas Indexadas Internacionales | Circulación / Nivel : A - 1 |
| Biblioteca(s): INIA Las Brujas. |
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| 64. | | OTERO, A.; PIRIZ, S.; SILVERA, E. Optimización de la intensidad de raleo de frutas en mandarina Satsuma cv Okitsu (Citrus unshiu Marc) en las condiciones productivas de Salto, Uruguay. ln: Congreso Nacional de Horticultura, 8.; Seminario Regional de Frutilla, 2001, Salto, Uruguay. Resúmenes. Montevideo (Uruguay): SUH; INIA, 2001. p. 63 Sociedad Uruguaya de Horticultura; Instituto Nacional de Investigación Agropecuaria, Uruguay| Biblioteca(s): INIA Las Brujas; INIA Salto Grande; INIA Tacuarembó; INIA Treinta y Tres. |
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| 71. | | NAVAS, R.; TISCORNIA, G.; BERGER, A.; OTERO, A. Assessing MODIS16A2 actual evapotranspiration across three spatial resolutions in Uruguay. [Evaluación de la evapotranspiración de MODIS16A2 en tres resoluciones espaciales en Uruguay.]. [Avaliação do producto da evapotranspiração MODIS16A2 em três resoluções espaciais no Uruguai.] Section: Natural and environmental resources. Agrociencia Uruguay, 2021, vol. 25, n.2, article e429. Doi: https://doi.org/10.31285/AGRO.25.429 Article history: Received 22 Oct 2020; Accepted 04 May 2021; Published 26 Jun 2021.
Editor: Mónica M. Barbazán, Universidad de la República, Montevideo, Uruguay.
Correspondence: Rafael Navas, mail: rafaelnavas23@gmail.com| Tipo: Artículos en Revistas Indexadas Nacionales | Circulación / Nivel : Nacional - -- |
| Biblioteca(s): INIA Las Brujas. |
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| 72. | | GASO, D.; BERGER, A.; POLACK, G.; CIGANDA, V.; OTERO, A. Assimilating leaf area index time series into a simple crop growth model to estimate soil water holding capacity and soybean yield. In: INTERNATIONAL ANNUAL MEETINGS,2013, Tampa, FL, USA. Water, Food, Energy & Innovation for a Sustainable World: Poster no. 804. Florida: ASA/CSSA/SSSA, 2013.| Biblioteca(s): INIA La Estanzuela. |
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| 74. | | BERGER, A.; OTERO, A.; MORALES, X.; CALISTRO, R. Actual evapotranspiration measurement trough [i.e. through] eddy covariance in Uruguay: abstract. Agrociencia Uruguay, v. 19, special issue "Inter-Regional CIGR Conference on Land and Water Challenges, 3., La Estanzuela, Colonia, UY. Tools for developing; "Dr. Mario García Petillo"", p. 4, 2015.| Tipo: Trabajos en Congresos/Conferencias |
| Biblioteca(s): INIA La Estanzuela. |
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| 77. | | OTERO, A.; BERGER, A.; MORALES, X.; CALISTRO, R. Eddy covariance estimates of evapotranspiration in irrigated and rainfed soybean in Uruguay: abstract. Agrociencia Uruguay, 2015, v.19, Special Issue, Congreso CIGR. 3r. Inter-Regional CIGR Conference on Land and Water Challenges: Tools for developing "Dr. Mario García Petillo", p.8 EDITORIAL BOARD SPECIAL ISSUE: García, C. (Instituto Nacional de Investigación Agropecuaria); Puppo, L. (Universidad de la República, Facultad de Agronomía); Tarjuelo, J.M. (Univ. Castilla-La Mancha, España); Carsjens, G-.J....| Tipo: Abstracts/Resúmenes |
| Biblioteca(s): INIA La Estanzuela; INIA Las Brujas. |
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| 80. | | MUJICA, V.; OSORIO, F.; BISIO, L.; OTERO, A. Evaluación de un modelo de desarrollo floral en Valencia Late (Citrus sinensis, Osbeck) bajo condiciones de riego y secano. In: Congreso Nacional de Horticultura, 8.; Seminario Regional de Frutilla, 2001, Salto, Uruguay. Resúmenes. Montevideo (Uruguay): S635 CONr 8UH; INIA, 2001. p. 62 "Sociedad Uruguaya de Horticultura; Instituto Nacional de Investigación Agropecuaria, Uruguay"| Tipo: Abstracts/Resúmenes |
| Biblioteca(s): INIA Las Brujas; INIA Salto Grande; INIA Tacuarembó; INIA Treinta y Tres. |
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| Registros recuperados : 106 | |
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