OrangerV1, Main, Exploration, bibRecord, 001599

Influence of Rootstocks on Photosynthesis in Navel Orange Leaves: Effects on Growth, Yield, and Carbohydrate Distribution

Identifieur interne : 001599 ( Main/Exploration ); précédent : 001598; suivant : 001600

Influence of Rootstocks on Photosynthesis in Navel Orange Leaves: Effects on Growth, Yield, and Carbohydrate Distribution

Auteurs : Sara Jover [Espagne] ; Belén Martinez-Alcantara [Espagne] ; Juan Rodriguez-Gamir [Espagne] ; Francisco Legaz [Espagne] ; Eduardo Primo-Millo [Espagne] ; Juan Forner [Espagne] ; M. Angeles Forner-Giner [Espagne]

Source :

Crop science [ 0011-183X ] ; 2012.

RBID : Pascal:12-0122583

Descripteurs français

Pascal (Inist)
- Porte greffe, Photosynthèse, Feuille végétal, Croissance, Rendement, Citrus sinensis, Orange, Glucide.

English descriptors

KwdEn :
- Carbohydrate, Citrus sinensis, Growth, Orange, Photosynthesis, Plant leaf, Rootstock, Yield.

Abstract

The effects of two rootstocks on tree growth, fruit set and development, yield, CO₂ assimilation, ¹³C- photoassimilates transport, and carbohydrate distribution were investigated. Cleopatra mandarin (CM) (Citrus reshni hort. ex Tanaka) and Forner-Alcaide 13 (FA-13) [Citrus reshni hort. ex Tanaka x Poncirus trifoliata (L.) Raf.] rootstocks were used for this study. The first experiment was performed with 2-yr-old plants grown under greenhouse conditions. The results showed that leaves from navel orange [Citrus sinensis (L.) Osbeck] grafted onto FA-13 rootstock (navel onto FA-13) had higher net CO₂ assimilation (Aco₂) rates than those from navel orange grafted onto CM rootstock (navel onto CM). Also, FA-13 rootstock induced an increase in leaf transpiration rate with respect to CM rootstock resulting in similar water use efficiency (WUE) values. The higher of photosynthetic activity in navel onto FA-13 plants resulted in higher photoassimilate transport (¹³C-labeled) from leaves to roots compared to navel onto CM plants, causing higher sucrose and starch accumulation in FA-13 roots. The second experiment was performed under field conditions using 7-yr-old trees. Navel orange grafted onto FA-13, which had the highest Aco₂ values, displayed higher photoassimilate transport (¹³C-labeled) from leaves to developing fruits than those on CM. navel onto FA-13 leaf sucrose content decreased compared to navel onto CM and leaf concentrations of this sugar were inversely correlated with Aco₂ values. On the other hand, sucrose and starch concentrations in root bark appeared to be related with fruit sink strength. In conclusion, FA-13 rootstock enhances photosynthetic rate in navel orange leaves compared to CM and differences in this parameter affected growth and increased yield.

Affiliations:

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<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Carbohydrate</term>
<term>Citrus sinensis</term>
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<term>Photosynthesis</term>
<term>Plant leaf</term>
<term>Rootstock</term>
<term>Yield</term>
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<keywords scheme="Pascal" xml:lang="fr"><term>Porte greffe</term>
<term>Photosynthèse</term>
<term>Feuille végétal</term>
<term>Croissance</term>
<term>Rendement</term>
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<front><div type="abstract" xml:lang="en">The effects of two rootstocks on tree growth, fruit set and development, yield, CO<sub>2</sub>
 assimilation, <sup>13</sup>
C- photoassimilates transport, and carbohydrate distribution were investigated. Cleopatra mandarin (CM) (Citrus reshni hort. ex Tanaka) and Forner-Alcaide 13 (FA-13) [Citrus reshni hort. ex Tanaka x Poncirus trifoliata (L.) Raf.] rootstocks were used for this study. The first experiment was performed with 2-yr-old plants grown under greenhouse conditions. The results showed that leaves from navel orange [Citrus sinensis (L.) Osbeck] grafted onto FA-13 rootstock (navel onto FA-13) had higher net CO<sub>2</sub>
 assimilation (Aco<sub>2</sub>
) rates than those from navel orange grafted onto CM rootstock (navel onto CM). Also, FA-13 rootstock induced an increase in leaf transpiration rate with respect to CM rootstock resulting in similar water use efficiency (WUE) values. The higher of photosynthetic activity in navel onto FA-13 plants resulted in higher photoassimilate transport (<sup>13</sup>
C-labeled) from leaves to roots compared to navel onto CM plants, causing higher sucrose and starch accumulation in FA-13 roots. The second experiment was performed under field conditions using 7-yr-old trees. Navel orange grafted onto FA-13, which had the highest Aco<sub>2</sub>
 values, displayed higher photoassimilate transport (<sup>13</sup>
C-labeled) from leaves to developing fruits than those on CM. navel onto FA-13 leaf sucrose content decreased compared to navel onto CM and leaf concentrations of this sugar were inversely correlated with Aco<sub>2</sub>
 values. On the other hand, sucrose and starch concentrations in root bark appeared to be related with fruit sink strength. In conclusion, FA-13 rootstock enhances photosynthetic rate in navel orange leaves compared to CM and differences in this parameter affected growth and increased yield.</div>
</front>
</TEI>
<affiliations><list><country><li>Espagne</li>
</country>
<region><li>Communauté valencienne</li>
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<tree><country name="Espagne"><region name="Communauté valencienne"><name sortKey="Jover, Sara" sort="Jover, Sara" uniqKey="Jover S" first="Sara" last="Jover">Sara Jover</name>
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<name sortKey="Forner Giner, M Angeles" sort="Forner Giner, M Angeles" uniqKey="Forner Giner M" first="M. Angeles" last="Forner-Giner">M. Angeles Forner-Giner</name>
<name sortKey="Forner, Juan" sort="Forner, Juan" uniqKey="Forner J" first="Juan" last="Forner">Juan Forner</name>
<name sortKey="Legaz, Francisco" sort="Legaz, Francisco" uniqKey="Legaz F" first="Francisco" last="Legaz">Francisco Legaz</name>
<name sortKey="Martinez Alcantara, Belen" sort="Martinez Alcantara, Belen" uniqKey="Martinez Alcantara B" first="Belén" last="Martinez-Alcantara">Belén Martinez-Alcantara</name>
<name sortKey="Primo Millo, Eduardo" sort="Primo Millo, Eduardo" uniqKey="Primo Millo E" first="Eduardo" last="Primo-Millo">Eduardo Primo-Millo</name>
<name sortKey="Rodriguez Gamir, Juan" sort="Rodriguez Gamir, Juan" uniqKey="Rodriguez Gamir J" first="Juan" last="Rodriguez-Gamir">Juan Rodriguez-Gamir</name>
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</tree>
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Influence of Rootstocks on Photosynthesis in Navel Orange Leaves: Effects on Growth, Yield, and Carbohydrate Distribution

Influence of Rootstocks on Photosynthesis in Navel Orange Leaves: Effects on Growth, Yield, and Carbohydrate Distribution

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Descripteurs français

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Abstract

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