Salinity-calcium interactions on growth and ionic concentration of Citrus plants
Identifieur interne : 003B55 ( Main/Exploration ); précédent : 003B54; suivant : 003B56Salinity-calcium interactions on growth and ionic concentration of Citrus plants
Auteurs : J. Ba Uls [Espagne] ; F. Legaz [Espagne] ; E. Primo-Millo [Espagne]Source :
- Plant and Soil [ 0032-079X ] ; 1991-05-01.
Abstract
Abstract: Two-year-old Navel orange scions (Citrus sinensis (L.) Osbeck) budded to either Cleopatra mandarin (C. reticulata) and Troyer citrange (C. sinensis × P. trifoliata) rootstocks were used in this experiment. Cleopatra manda in rootstock was considered more tolerant to salinity than Troyer citrange, and this property was attributed to a greater capacity to exclude chloride ions. Plants were grown under glasshouse conditions and supplied with nutrient solution containing either no or 45 mM NaCl. Calcium concentration was increased from 3 to 30 mM. Sodium, potassium, calcium and chloride concentrations in plant organs were analyzed after 90 days of treatment. Supplemental Ca was found to mitigate the adverse effects of salinity on plant growth, defoliation or leaf injury. Chemical analysis indicated that in plants grafted on Troyer citrange Ca restricted uptake and subsequent translocation of Na to the leaves and increased K concentration in both roots and leaves. However, in Cleopatra mandarin-grafted plants increasing Ca levels seemed to reduce transport of Na from roots to leaves, and Na accumulation in roots was associated with reduced concentration of K in this rootstock. Organ chloride analysis showed that Cl accumulation in leaves of plants grafted on both rootstocks was reduced when external Ca concentration increased, whereas Cl concentration in roots remained constant or increased. The data of distribution of Cl in plants showed that a high external Ca level increased Cl accumulation in the basal stem and roots, and reduced the transport of Cl from roots to leaves.
Url:
DOI: 10.1007/BF00011897
Affiliations:
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Ba Uls</name><affiliation wicri:level="1"><country xml:lang="fr">Espagne</country><wicri:regionArea>Departamento de Citricultura, Instituto Valenciano de Investigaciones Agrarias, Apartado Oficial, E-46113, Moncada (Valencia)</wicri:regionArea><wicri:noRegion>Moncada (Valencia)</wicri:noRegion></affiliation></author><author><name sortKey="Legaz, F" sort="Legaz, F" uniqKey="Legaz F" first="F." last="Legaz">F. Legaz</name><affiliation wicri:level="1"><country xml:lang="fr">Espagne</country><wicri:regionArea>Departamento de Citricultura, Instituto Valenciano de Investigaciones Agrarias, Apartado Oficial, E-46113, Moncada (Valencia)</wicri:regionArea><wicri:noRegion>Moncada (Valencia)</wicri:noRegion></affiliation></author><author><name sortKey="Primo Millo, E" sort="Primo Millo, E" uniqKey="Primo Millo E" first="E." last="Primo-Millo">E. 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Osbeck) budded to either Cleopatra mandarin (C. reticulata) and Troyer citrange (C. sinensis × P. trifoliata) rootstocks were used in this experiment. Cleopatra manda in rootstock was considered more tolerant to salinity than Troyer citrange, and this property was attributed to a greater capacity to exclude chloride ions. Plants were grown under glasshouse conditions and supplied with nutrient solution containing either no or 45 mM NaCl. Calcium concentration was increased from 3 to 30 mM. Sodium, potassium, calcium and chloride concentrations in plant organs were analyzed after 90 days of treatment. Supplemental Ca was found to mitigate the adverse effects of salinity on plant growth, defoliation or leaf injury. Chemical analysis indicated that in plants grafted on Troyer citrange Ca restricted uptake and subsequent translocation of Na to the leaves and increased K concentration in both roots and leaves. However, in Cleopatra mandarin-grafted plants increasing Ca levels seemed to reduce transport of Na from roots to leaves, and Na accumulation in roots was associated with reduced concentration of K in this rootstock. Organ chloride analysis showed that Cl accumulation in leaves of plants grafted on both rootstocks was reduced when external Ca concentration increased, whereas Cl concentration in roots remained constant or increased. The data of distribution of Cl in plants showed that a high external Ca level increased Cl accumulation in the basal stem and roots, and reduced the transport of Cl from roots to leaves.</div></front></TEI><affiliations><list><country><li>Espagne</li></country></list><tree><country name="Espagne"><noRegion><name sortKey="Ba Uls, J" sort="Ba Uls, J" uniqKey="Ba Uls J" first="J." last="Ba Uls">J. Ba Uls</name></noRegion><name sortKey="Legaz, F" sort="Legaz, F" uniqKey="Legaz F" first="F." last="Legaz">F. Legaz</name><name sortKey="Primo Millo, E" sort="Primo Millo, E" uniqKey="Primo Millo E" first="E." last="Primo-Millo">E. Primo-Millo</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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