ISHS Acta Horticulturae 789: XV Meeting of the EUCARPIA Tomato Working Group
EVALUATION AND SELECTION OF LYCOPERSICON ACCESSIONS FOR HIGH CAROTENOID AND VITAMIN C CONTENT |
| Authors: | A.M. Adalid, S. Roselló, J. Cebolla-Cornejo, F. Nuez |
| Keywords: | Lycopersicon esculentum var. cerasiforme, traditional varieties of tomato, nutritional value, GGEBiplot analysis |
| Abstract:
Tomatoes are one of the most consumed vegetables in the world all year round. For this reason, tomato has become a valuable source of antioxidants (mainly carotenoids and vitamin C), which play an important role in preventing certain cancer and cardiovascular diseases. Thus, tomato breeding for nutritional value is an increasingly important objective. One way to improve the vitamin and carotenoid content in the tomato is the use of "high antioxidant content" accessions of the genus Lycopersicon as donor parents in breeding programs. Nonetheless, new sources of variability have to be identified to carry out this strategy. In this work, we have characterized the carotenoid and vitamin C content in 11 accessions of Lycopersicon esculentum var. cerasiforme and in six L. esculentum traditional Spanish varieties. Three mutants of L. esculentum with high pigment accumulation, one commercial hybrid, two experimental breeding lines and one tomato variety for processing were used as controls in comparisons made with different tomato types. A very interesting L. esculentum traditional Spanish variety (UPV17790) was selected with 4 times the lycopene content of the commercial hybrid control and 1.35 times the content of the mutant controls. This traditional variety also stands out for its  -carotene content (0.65 times the content of mutant controls and 6 times the content of the commercial hybrid control). The accession UPV20525 of L. esculentum var. cersiforme was an interesting option given its ß-carotene content (0.78 and 7.36 times the content of mutants and commercial hybrid controls, respectively) and also for its vitamin C content (1.97 times the content of the commercial hybrid control). The UPV22353 and UPV22487 L. esculentum var. cersiforme accessions are of particular interest for their vitamin C content (similar to UPV20525). All the selected accessions may be used as donor parents in breeding programs or per se in specific uses (organic farming or gourmet products).
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