Salt resistance of tomato species grown in sand culture
In this study, Na+, Cl-, K+, Ca2+, chlorophyll and proline levels and the rate of lipid peroxidation level in terms of malondialdehyde (MDA), were investigated in tissues of 15 different tomato cultivars in salt tolerance. As a material, 15 different tomato genotypes were used during a 28-day period...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Czech Academy of Agricultural Sciences
2010-11-01
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| Series: | Plant, Soil and Environment |
| Subjects: | |
| Online Access: | https://pse.agriculturejournals.cz/artkey/pse-201011-0001_salt-resistance-of-tomato-species-grown-in-sand-culture.php |
| Summary: | In this study, Na+, Cl-, K+, Ca2+, chlorophyll and proline levels and the rate of lipid peroxidation level in terms of malondialdehyde (MDA), were investigated in tissues of 15 different tomato cultivars in salt tolerance. As a material, 15 different tomato genotypes were used during a 28-day period and 150 mmol NaCl was applied in sand culture. While one of tomato genotypes was a wild type belonging to Lycopersicum peruvianum, the others were local genotypes belonging to Lycopersicum esculentum L. Better NaCl-stress tolerance in salt-tolerant cultivars as compared to salt-sensitive cultivars observed during the present investigation might be due to restriction of Na+ accumulation and ability to maintain high K+/Na+ ratio in tissue. The chlorophyll level decreased more in salt-sensitive than in salt-resistant cultivars, whereas proline level increased more in salt-sensitive than in salt-resistant cultivars. The exposure to NaCl induced a significant increase in MDA level in both salt-resistant and salt-sensitive cultivars; yet, MDA level was higher in salt-sensitive cultivars. As a result, exclusion or inclusion of Na+, Cl-, K+ and Ca2+ MDA levels, chlorophyll and proline levels may play a key protective role against stress and these features can be used as identifiers for tolerance to salt. |
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| ISSN: | 1214-1178 1805-9368 |