Differential tolerance to iron deficiency of citrus rootstocks grown in nutrient solution
Identifieur interne : 002850 ( Main/Exploration ); précédent : 002849; suivant : 002851Differential tolerance to iron deficiency of citrus rootstocks grown in nutrient solution
Auteurs : Maribela Pestana [Portugal] ; Amarilis De Varennes [Portugal] ; Javier Abadia [Espagne] ; Eugénio Araujo Faria [Portugal]Source :
- Scientia horticulturae [ 0304-4238 ] ; 2005.
Descripteurs français
- Pascal (Inist)
- Wicri :
- topic : Biomasse, Horticulture.
English descriptors
- KwdEn :
Abstract
We studied the effects of Fe deficiency on physiological parameters of citrus rootstocks grown in nutrient solution. Three 4-week old rootstocks ('Troyer' citrange - Citrus sinensis (L.) Osb. x Poncirus trifoliata (L.) Raf., Citrus taiwanica Tan. and Shim., and 'Swingle' citrumelo - Poncirus trifoliata (L.) Raf. x Citrus paradisi Macf.) were grown in nutrient solutions with 0, 5, 10, 15 and 20 μmol Fe dm-3. Calcium carbonate (1 g dm-3) was added to all solutions to mimic the natural conditions in calcareous soils. For each rootstock, shoot length, number of leaves, and root and shoot dry weights were measured at the end of experiment. Chlorophyll concentration was estimated using a portable SPAD-502 meter calibrated for each rootstock. The amount of nutrients (P, K, Mg, Ca, Fe, Zn, Mn, and Cu) was determined in shoots. Chlorophyll fluorescence parameters (F0: basal fluorescence; Fm: maximum fluorescence; Fv = Fm - Fo: variable fluorescence) were measured with a portable fluorimeter. 'Troyer' citrange rootstock was the most tolerant to Fe deficiency. These plants grew more and accumulated more chlorophyll and nutrients than the others in the presence of low levels of Fe (10 μmol Fe dm-3). 'Swingle' citrumelo plants needed 20 μmol Fe dm-3 in the nutrient solution to secure adequate growth. 'Taiwanica' orange rootstock had an intermediate behaviour, but could be distinguished from 'Troyer' citrange based on fluorescence parameters, since there was a variation in the basal fluorescence in the former, whereas in 'Troyer' citrange the basal fluorescence was not affected by the supply of Fe.
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aut.</sZ></inist:fA14><country>Portugal</country><wicri:noRegion>1349-017 Lisbon</wicri:noRegion></affiliation></author><author><name sortKey="Abadia, Javier" sort="Abadia, Javier" uniqKey="Abadia J" first="Javier" last="Abadia">Javier Abadia</name><affiliation wicri:level="2"><inist:fA14 i1="03"><s1>Departamento de Nutrición Végétal, Estación Expérimental de Aula Dei, Consejo Superior de Investigaciones Científicas, Apartado 202</s1><s2>50080 Zaragoza</s2><s3>ESP</s3><sZ>3 aut.</sZ></inist:fA14><country>Espagne</country><placeName><region nuts="2" type="communauté">Aragon</region></placeName></affiliation></author><author><name sortKey="Araujo Faria, Eugenio" sort="Araujo Faria, Eugenio" uniqKey="Araujo Faria E" first="Eugénio" last="Araujo Faria">Eugénio Araujo Faria</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Faculdade de Engenharia de Recursos Naturais, Universidade do Algarve, Campus de Gambelas</s1><s2>8005-139 Faro</s2><s3>PRT</s3><sZ>1 aut.</sZ><sZ>4 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Maribela" uniqKey="Pestana M" first="Maribela" last="Pestana">Maribela Pestana</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Faculdade de Engenharia de Recursos Naturais, Universidade do Algarve, Campus de Gambelas</s1><s2>8005-139 Faro</s2><s3>PRT</s3><sZ>1 aut.</sZ><sZ>4 aut.</sZ></inist:fA14><country>Portugal</country><wicri:noRegion>8005-139 Faro</wicri:noRegion></affiliation></author><author><name sortKey="De Varennes, Amarilis" sort="De Varennes, Amarilis" uniqKey="De Varennes A" first="Amarilis" last="De Varennes">Amarilis De Varennes</name><affiliation wicri:level="1"><inist:fA14 i1="02"><s1>Departamento de Química Agrícola e Ambiental, Instituto Superior de Agronomia, Tapada da Ajuda</s1><s2>1349-017 Lisbon</s2><s3>PRT</s3><sZ>2 aut.</sZ></inist:fA14><country>Portugal</country><wicri:noRegion>1349-017 Lisbon</wicri:noRegion></affiliation></author><author><name sortKey="Abadia, Javier" sort="Abadia, Javier" uniqKey="Abadia J" first="Javier" last="Abadia">Javier Abadia</name><affiliation wicri:level="2"><inist:fA14 i1="03"><s1>Departamento de Nutrición Végétal, Estación Expérimental de Aula Dei, Consejo Superior de Investigaciones Científicas, Apartado 202</s1><s2>50080 Zaragoza</s2><s3>ESP</s3><sZ>3 aut.</sZ></inist:fA14><country>Espagne</country><placeName><region nuts="2" type="communauté">Aragon</region></placeName></affiliation></author><author><name sortKey="Araujo Faria, Eugenio" sort="Araujo Faria, Eugenio" uniqKey="Araujo Faria E" first="Eugénio" last="Araujo Faria">Eugénio Araujo Faria</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Faculdade de Engenharia de Recursos Naturais, Universidade do Algarve, Campus de Gambelas</s1><s2>8005-139 Faro</s2><s3>PRT</s3><sZ>1 aut.</sZ><sZ>4 aut.</sZ></inist:fA14><country>Portugal</country><wicri:noRegion>8005-139 Faro</wicri:noRegion></affiliation></author></analytic><series><title level="j" type="main">Scientia horticulturae</title><title level="j" type="abbreviated">Sci. hortic.</title><idno type="ISSN">0304-4238</idno><imprint><date when="2005">2005</date></imprint></series></biblStruct></sourceDesc><seriesStmt><title level="j" type="main">Scientia horticulturae</title><title level="j" type="abbreviated">Sci. hortic.</title><idno type="ISSN">0304-4238</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Biomass</term><term>Chlorophyll</term><term>Citrus</term><term>Fluorescence</term><term>Horticulture</term><term>Inorganic analysis</term><term>Iron chlorosis</term><term>Nutrient solution</term><term>Rootstock</term><term>Tolerance</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>Tolérance</term><term>Chlorose ferrique</term><term>Porte greffe</term><term>Biomasse</term><term>Fluorescence</term><term>Analyse minérale</term><term>Horticulture</term><term>Citrus</term><term>Solution nutritive</term><term>Chlorophylle</term></keywords><keywords scheme="Wicri" type="topic" xml:lang="fr"><term>Biomasse</term><term>Horticulture</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">We studied the effects of Fe deficiency on physiological parameters of citrus rootstocks grown in nutrient solution. Three 4-week old rootstocks ('Troyer' citrange - Citrus sinensis (L.) Osb. x Poncirus trifoliata (L.) Raf., Citrus taiwanica Tan. and Shim., and 'Swingle' citrumelo - Poncirus trifoliata (L.) Raf. x Citrus paradisi Macf.) were grown in nutrient solutions with 0, 5, 10, 15 and 20 μmol Fe dm<sup>-3</sup>. Calcium carbonate (1 g dm<sup>-3</sup>) was added to all solutions to mimic the natural conditions in calcareous soils. For each rootstock, shoot length, number of leaves, and root and shoot dry weights were measured at the end of experiment. Chlorophyll concentration was estimated using a portable SPAD-502 meter calibrated for each rootstock. The amount of nutrients (P, K, Mg, Ca, Fe, Zn, Mn, and Cu) was determined in shoots. Chlorophyll fluorescence parameters (F<sub>0</sub>: basal fluorescence; F<sub>m</sub>: maximum fluorescence; F<sub>v</sub> = F<sub>m</sub> - F<sub>o</sub>: variable fluorescence) were measured with a portable fluorimeter. 'Troyer' citrange rootstock was the most tolerant to Fe deficiency. These plants grew more and accumulated more chlorophyll and nutrients than the others in the presence of low levels of Fe (10 μmol Fe dm<sup>-3</sup>). 'Swingle' citrumelo plants needed 20 μmol Fe dm<sup>-3</sup> in the nutrient solution to secure adequate growth. 'Taiwanica' orange rootstock had an intermediate behaviour, but could be distinguished from 'Troyer' citrange based on fluorescence parameters, since there was a variation in the basal fluorescence in the former, whereas in 'Troyer' citrange the basal fluorescence was not affected by the supply of Fe.</div></front></TEI><affiliations><list><country><li>Espagne</li><li>Portugal</li></country><region><li>Aragon</li></region></list><tree><country name="Portugal"><noRegion><name sortKey="Pestana, Maribela" sort="Pestana, Maribela" uniqKey="Pestana M" first="Maribela" last="Pestana">Maribela Pestana</name></noRegion><name sortKey="Araujo Faria, Eugenio" sort="Araujo Faria, Eugenio" uniqKey="Araujo Faria E" first="Eugénio" last="Araujo Faria">Eugénio Araujo Faria</name><name sortKey="De Varennes, Amarilis" sort="De Varennes, Amarilis" uniqKey="De Varennes A" first="Amarilis" last="De Varennes">Amarilis De Varennes</name></country><country name="Espagne"><region name="Aragon"><name sortKey="Abadia, Javier" sort="Abadia, Javier" uniqKey="Abadia J" first="Javier" last="Abadia">Javier Abadia</name></region></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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