ISHS Acta Horticulturae 573: International Symposium on Techniques to Control Salination for Horticultural Productivity
INFLUENCE OF ROOTSTOCK IN THE TOMATO RESPONSE TO SALINITY |
| Authors: | M.M. Martínez-Rodríguez, A. Santa-Cruz, M.T. Estañ, M. Caro, M.C. Bolarín |
| Keywords: | Grafting, Lycopersicon esculentum, plant growth, ion contents, NaCl stress |
| DOI: | 10.17660/ActaHortic.2002.573.55 |
| Abstract:
With the aim of determining whether the root system modifies the salinity response of tomato plants, scions of L. esculentum cv UC-82B were grafted onto tomato rootstock cv Futuria, and compared with UC-82B grafted on its own root. After the grafts had taken, growth and physiological responses of the grafted plants to salinity were determined under controlled conditions using a control (nutrient solution) and a salt level (100 mM NaCl), applied for 35 days. The biomass production was higher in plants with Futuria rootstock than in the self-grafted plants after 35 days of salt treatment. Rootstock induced significant physiological changes in the leaves after only 15 days of salt treatment. Thus, Na+ and Cl- accumulation leaves of UC-82B grown in salty conditions were lower when the root of this cultivar had been substituted by that of the cv. Futuria. These differences increased with the salination period. These results suggest that differences in response to salinity observed in the scions depend on the rootstock, and that rootstock behaviour in salty conditions could be tested in short salination periods (15 to 35 days). | |
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