OrangerV1, Main, Exploration, bibRecord, 001596

Interstock of 'Valencia' Orange Affects the Flooding Tolerance in 'Verna' Lemon Trees

Identifieur interne : 001596 ( Main/Exploration ); précédent : 001595; suivant : 001597

Interstock of 'Valencia' Orange Affects the Flooding Tolerance in 'Verna' Lemon Trees

Auteurs : Vicente Gimeno [Espagne] ; James P. Syvertsen [États-Unis] ; Inma Simon [Espagne] ; Vicente Martinez [Espagne] ; Jose M. Camara-Zapata [Espagne] ; Manuel Nieves [Espagne] ; Francisco Garcia-Sanchez [Espagne]

Source :

HortScience [ 0018-5345 ] ; 2012.

RBID : Pascal:12-0181515

Descripteurs français

Pascal (Inist)
- Greffon plante, Noyage, Tolérance, Fluorescence, Arbre fruitier, Feuille végétal, Echange gazeux, Horticulture, Facteur abiotique, Citrus sinensis, Citrus limon, Agrume, Orange, Chlorophylle, Stress abiotique.
Wicri :
- topic : Horticulture, Agrume.

English descriptors

KwdEn :
- Abiotic factor, Abiotic stress, Chlorophyll, Citrus fruit, Citrus limon, Citrus sinensis, Flooding, Fluorescence, Fruit tree, Gas exchange, Horticulture, Orange, Plant leaf, Scion, Tolerance.

Abstract

Previous work on citrus trees has shown that an interstock, grafted between the rootstock and scion combination, not only can improve tree growth, longevity, fruit production, and quality, but also can increase salinity tolerance. This research was designed to evaluate flooding responses of 2-year-old 'Verna' lemon trees [Citrus limon (L.) Burm.; VL] either grafted on 'Sour' orange (C. aurantium L.; SO) rootstock without an interstock (VL/SO) or interstocked with 'Valencia' orange (C. sinensis Osbeck;VLN/SO) or with 'Castellano' orange (C. sinensis Osbeck; VL/C/SO). Well-watered and fertilized trees were grown under greenhouse conditions and half were flooded for 9 days. At the end of the flooded period, leaf water relations, leaf gas exchange, chlorophyll fluorescence parameters, mineral nutrition, organic solutes, and carbohydrate concentrations were measured. Leaf water potential (Ψ_w), relative water content (RWC), net CO₂ assimilation rate (A_CO2), and stomatal conductance (g_s) were decreased by flooding in all the trees but the greatest decreases occurred in VL/V/SO. The C_i/C_a (leaf internal CO₂ to ambient CO₂ ratio), F_v/F_o (potential activity of PSII) and F_v/F_m (maximum quantum efficiency) ratios were similar in flooded and non-flooded VL/SO and VL/C/SO trees but were decreased in VL/V/SO trees by flooding. Regardless of interstock, flooding increased root calcium (Ca), iron (Fe), copper (Cu), and manganese (Mn) concentration but decreased nitrogen (N) and potassium (K) concentration. Based on the leaf water relations, gas exchange, and chlorophyll parameters, 'Verna' lemon trees interstocked with 'Valencia' orange had the least flooding tolerance. Regardless of interstock, the detrimental effect of flooding in 'Verna' lemon trees was the leaf dehydration which decreased A_CO2 as a result of non-stomatal factors. Lowered A_CO2 did not decrease the leaf carbohydrate concentration. Flooding decreased root starch in all trees but more so in VL/V/SO trees. Sugars were decreased by flooding in roots of interstocked trees but were increased by flooding in VL/SO roots suggesting that the translocation of carbohydrates from shoots to roots under flooded condition was impaired in interstocked trees.

Affiliations:

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Le document en format XML

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<sZ>6 aut.</sZ>
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<author><name sortKey="Garcia Sanchez, Francisco" sort="Garcia Sanchez, Francisco" uniqKey="Garcia Sanchez F" first="Francisco" last="Garcia-Sanchez">Francisco Garcia-Sanchez</name>
<affiliation wicri:level="1"><inist:fA14 i1="06"><s1>Centro de Edafologia y Biologia Aplicada del Segura, CSIC, Campus Universitario de Espinardo, Espinardo</s1>
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<term>Feuille végétal</term>
<term>Echange gazeux</term>
<term>Horticulture</term>
<term>Facteur abiotique</term>
<term>Citrus sinensis</term>
<term>Citrus limon</term>
<term>Agrume</term>
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<front><div type="abstract" xml:lang="en">Previous work on citrus trees has shown that an interstock, grafted between the rootstock and scion combination, not only can improve tree growth, longevity, fruit production, and quality, but also can increase salinity tolerance. This research was designed to evaluate flooding responses of 2-year-old 'Verna' lemon trees [Citrus limon (L.) Burm.; VL] either grafted on 'Sour' orange (C. aurantium L.; SO) rootstock without an interstock (VL/SO) or interstocked with 'Valencia' orange (C. sinensis Osbeck;VLN/SO) or with 'Castellano' orange (C. sinensis Osbeck; VL/C/SO). Well-watered and fertilized trees were grown under greenhouse conditions and half were flooded for 9 days. At the end of the flooded period, leaf water relations, leaf gas exchange, chlorophyll fluorescence parameters, mineral nutrition, organic solutes, and carbohydrate concentrations were measured. Leaf water potential (Ψ<sub>w</sub>
), relative water content (RWC), net CO<sub>2</sub>
 assimilation rate (A<sub>CO2</sub>
), and stomatal conductance (g<sub>s</sub>
) were decreased by flooding in all the trees but the greatest decreases occurred in VL/V/SO. The C<sub>i</sub>
/C<sub>a</sub>
 (leaf internal CO<sub>2</sub>
 to ambient CO<sub>2</sub>
 ratio), F<sub>v</sub>
/F<sub>o</sub>
 (potential activity of PSII) and F<sub>v</sub>
/F<sub>m</sub>
 (maximum quantum efficiency) ratios were similar in flooded and non-flooded VL/SO and VL/C/SO trees but were decreased in VL/V/SO trees by flooding. Regardless of interstock, flooding increased root calcium (Ca), iron (Fe), copper (Cu), and manganese (Mn) concentration but decreased nitrogen (N) and potassium (K) concentration. Based on the leaf water relations, gas exchange, and chlorophyll parameters, 'Verna' lemon trees interstocked with 'Valencia' orange had the least flooding tolerance. Regardless of interstock, the detrimental effect of flooding in 'Verna' lemon trees was the leaf dehydration which decreased A<sub>CO2</sub>
 as a result of non-stomatal factors. Lowered A<sub>CO2</sub>
 did not decrease the leaf carbohydrate concentration. Flooding decreased root starch in all trees but more so in VL/V/SO trees. Sugars were decreased by flooding in roots of interstocked trees but were increased by flooding in VL/SO roots suggesting that the translocation of carbohydrates from shoots to roots under flooded condition was impaired in interstocked trees.</div>
</front>
</TEI>
<affiliations><list><country><li>Espagne</li>
<li>États-Unis</li>
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<tree><country name="Espagne"><noRegion><name sortKey="Gimeno, Vicente" sort="Gimeno, Vicente" uniqKey="Gimeno V" first="Vicente" last="Gimeno">Vicente Gimeno</name>
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<name sortKey="Camara Zapata, Jose M" sort="Camara Zapata, Jose M" uniqKey="Camara Zapata J" first="Jose M." last="Camara-Zapata">Jose M. Camara-Zapata</name>
<name sortKey="Garcia Sanchez, Francisco" sort="Garcia Sanchez, Francisco" uniqKey="Garcia Sanchez F" first="Francisco" last="Garcia-Sanchez">Francisco Garcia-Sanchez</name>
<name sortKey="Martinez, Vicente" sort="Martinez, Vicente" uniqKey="Martinez V" first="Vicente" last="Martinez">Vicente Martinez</name>
<name sortKey="Nieves, Manuel" sort="Nieves, Manuel" uniqKey="Nieves M" first="Manuel" last="Nieves">Manuel Nieves</name>
<name sortKey="Simon, Inma" sort="Simon, Inma" uniqKey="Simon I" first="Inma" last="Simon">Inma Simon</name>
</country>
<country name="États-Unis"><region name="Floride"><name sortKey="Syvertsen, James P" sort="Syvertsen, James P" uniqKey="Syvertsen J" first="James P." last="Syvertsen">James P. Syvertsen</name>
</region>
</country>
</tree>
</affiliations>
</record>

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Interstock of 'Valencia' Orange Affects the Flooding Tolerance in 'Verna' Lemon Trees

Interstock of 'Valencia' Orange Affects the Flooding Tolerance in 'Verna' Lemon Trees

Source :

Descripteurs français

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri