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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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Biblioteca (s) : |
INIA Las Brujas. |
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Fecha : |
14/10/2014 |
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Actualizado : |
15/10/2019 |
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Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
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Autor : |
OTERO, A.; GOÑI, C.; JIFON, J.L.; SYVERTSEN, J.P. |
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Afiliación : |
ALVARO RICARDO OTERO CAMA, Instituto Nacional de Investigación Agropecuaria (INIA), Uruguay; CARMEN TERESITA GOÑI ALTUNA, Instituto Nacional de Investigación Agropecuaria (INIA), Uruguay. |
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Título : |
High temperature effects on citrus orange leaf gas exchange, flowering, fruit quality and yield. (Conference paper). |
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Fecha de publicación : |
2011 |
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Fuente / Imprenta : |
Acta Horticulturae, 2011, no.903, p.1069-1074. |
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Serie : |
(Acta Horticulturae; 903). |
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ISBN : |
978-90-66052-97-0 |
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ISSN : |
0567-7572 |
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DOI : |
10.17660/ActaHortic.2011.903.149 |
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Idioma : |
Inglés |
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Notas : |
ISHS Acta Horticulturae 903: IX International Symposium on Integrating Canopy, Rootstock and Environmental Physiology in Orchard Systems. Editor: T.L. Robinson.
Publication date: 1 August 2011 |
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Contenido : |
ABSTRACT.
High midday temperatures in subtropical citrus growing regions can lead to excessively high leaf temperature (Tlf) and large leaf-to-air vapor pressure difference (D) in sun exposed leaves. This heat stress reduced net CO 2 assimilation (AC), growth, fruit yield and quality. 50% shading reduced average mid-day Tlf and increased AC, stomatal conductance (gs) and leaf water use efficiency, but decreased the internal concentration of CO 2 (Ci) in the mesophyll compared with sun-exposed trees throughout the season. However, shade had little effect on leaf transpiration. Heat stress increased non-stomatal limitations to AC in the mesophyll of sunlit leaves that were greater than stomatal limitations. Shade treatment reduced leaf carbohydrates but did not affect tree canopy volume or fruit size. Shading in the late fall until harvest increased orange yield and juice content more than compensated for the lower total soluble sugars (TSS) and resulted in net increases in TSS per tree. Shaded 'Navel' orange fruit developed better external color but lower TSS than sunexposed fruit. Shade did not affect orange fruit yields. In warm citrus producing regions, shading could improve photosynthesis and fruit quality especially in young trees where most of the leaves are exposed to direct sunlight. Improved fruit color, yield and/or TSS per hectare of high-value varieties could offset the costs of particle film sprays or shading in commercial orchards. |
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Thesagro : |
CARBONO; CITRUS; COLOR; FOTOSÍNTESIS; MARCADO DEL COLOR. |
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Asunto categoría : |
F01 Cultivo |
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Marc : |
LEADER 02460naa a2200277 a 4500
001 1051053
005 2019-10-15
008 2011 bl uuuu u00u1 u #d
020 $a978-90-66052-97-0
022 $a0567-7572
024 7 $a10.17660/ActaHortic.2011.903.149$2DOI
100 1 $aOTERO, A.
245 $aHigh temperature effects on citrus orange leaf gas exchange, flowering, fruit quality and yield. (Conference paper).$h[electronic resource]
260 $c2011
490 $a(Acta Horticulturae; 903).
500 $aISHS Acta Horticulturae 903: IX International Symposium on Integrating Canopy, Rootstock and Environmental Physiology in Orchard Systems. Editor: T.L. Robinson. Publication date: 1 August 2011
520 $aABSTRACT. High midday temperatures in subtropical citrus growing regions can lead to excessively high leaf temperature (Tlf) and large leaf-to-air vapor pressure difference (D) in sun exposed leaves. This heat stress reduced net CO 2 assimilation (AC), growth, fruit yield and quality. 50% shading reduced average mid-day Tlf and increased AC, stomatal conductance (gs) and leaf water use efficiency, but decreased the internal concentration of CO 2 (Ci) in the mesophyll compared with sun-exposed trees throughout the season. However, shade had little effect on leaf transpiration. Heat stress increased non-stomatal limitations to AC in the mesophyll of sunlit leaves that were greater than stomatal limitations. Shade treatment reduced leaf carbohydrates but did not affect tree canopy volume or fruit size. Shading in the late fall until harvest increased orange yield and juice content more than compensated for the lower total soluble sugars (TSS) and resulted in net increases in TSS per tree. Shaded 'Navel' orange fruit developed better external color but lower TSS than sunexposed fruit. Shade did not affect orange fruit yields. In warm citrus producing regions, shading could improve photosynthesis and fruit quality especially in young trees where most of the leaves are exposed to direct sunlight. Improved fruit color, yield and/or TSS per hectare of high-value varieties could offset the costs of particle film sprays or shading in commercial orchards.
650 $aCARBONO
650 $aCITRUS
650 $aCOLOR
650 $aFOTOSÍNTESIS
650 $aMARCADO DEL COLOR
700 1 $aGOÑI, C.
700 1 $aJIFON, J.L.
700 1 $aSYVERTSEN, J.P.
773 $tActa Horticulturae, 2011, no.903, p.1069-1074.
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| 1. |  | OLIVEIRA NETO, T. S. DE; RIET-CORREA, F.; BARBOSA, F. M. S.; NASCIMENTO, H. H. L.; CARVALHO, L. R. R. A.; ALVES, A. J.; LUCENA, R. B. Intoxicação por Portulaca elatior (Portulacaceae) em bovinos. [Portulaca elatior (Portulacaceae) poisoning in cattle]. Pesquisa Veterinária Brasileira, Brasília, DF v. 37, n. 8, p. 785-789, ago. 2017. Article History: Recebido em13 de agosto de 2015.//Aceito para publicação em 21 de julho de 2016.//Parte da Tese de Doutorado do primeiro autor.| Tipo: Artículos en Revistas Indexadas Internacionales | Circulación / Nivel : Internacional - -- |
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