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Open AccessArticle

The Antioxidant Profile Evaluation of Some Tomato Landraces with Soil Salinity Tolerance Correlated with High Nutraceuticaland Functional Value

1
Faculty of Horticulture and Forestry, Banat’s University of Agricultural Sciences and Veterinary Medicine “King Michael I of Romania” from Timisoara, CaleaAradului 119, 300645 Timisoara, Romania
2
Faculty of Food Processing, Banat’s University of Agricultural Sciences and Veterinary Medicine “King Michael I of Romania”from Timisoara, CaleaAradului 119, 300645 Timisoara, Romania
3
Faculty of Agriculture, Banat’s University of Agricultural Sciences and Veterinary Medicine “King Michael I of Romania” from Timisoara, CaleaAradului 119, 300645 Timisoara, Romania
4
“CoriolanDragulescu” Institute of Chemistry, 24 Mihai Viteazul Blvd., 300223 Timisoara, Romania
5
Faculty of Food Engineering, Tourism and Environmental Protection, Research Center in Technical and Natural Sciences, “AurelVlaicu” University, Elena Dragoi 2, 310330 Arad, Romania
*
Author to whom correspondence should be addressed.
Agronomy 2020, 10(4), 500; https://doi.org/10.3390/agronomy10040500
Received: 23 March 2020 / Revised: 30 March 2020 / Accepted: 31 March 2020 / Published: 2 April 2020
Romania has a wide variety of local landraces and heirloom genotypes. Our study aims to assess the performance of twenty halotolerant tomato landraces, collected from areas with medium and high levels of soil salinity, in terms ofthe accumulation of antioxidant compounds in fruits and to cluster them according to their nutraceutical components. The tomatoes used in the study were harvested once they had attained full ripeness and then analyzed for lycopene (Lyc), ascorbic acid content (AsA), total phenolic content (TPC), and total antioxidant capacity (TAC). The results revealed major differences between genotypes in terms of nutraceutical values. According to principal component analysis, the tomato landraces were grouped into five clusters, characterized by different proportions of compounds with antioxidant activity. The high/moderate nutritional values of Lyc, TAC, TPC, and AsA were obtained from varieties taken from local lands with high soil salinity, over 6.5 dS m−1. These findings support the idea that metabolites and secondary antioxidants are involved in the process of stress adaptation, thereby increasing salinity tolerance in tomatoes. Our results show that there are tomato landraces with a tolerance of adaptation to conditions of high soil salinity and provide information on their ability to synthesize molecules with antioxidant functions that protect plants against oxidative damage. View Full-Text
Keywords: tomato cultivars; salinity tolerance; antioxidant activity; lycopene; ascorbic acid; total polyphenols content tomato cultivars; salinity tolerance; antioxidant activity; lycopene; ascorbic acid; total polyphenols content
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MDPI and ACS Style

Sumalan, R.M.; Ciulca, S.I.; Poiana, M.A.; Moigradean, D.; Radulov, I.; Negrea, M.; Crisan, M.E.; Copolovici, L.; Sumalan, R.L. The Antioxidant Profile Evaluation of Some Tomato Landraces with Soil Salinity Tolerance Correlated with High Nutraceuticaland Functional Value. Agronomy 2020, 10, 500.

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