N. Tomlekova, B. Atanassova, D. Baralieva, F. Ribarova, D. Marinova
Lycopene and β-carotene content in tomato varies not only in relation to genotype but also depending on several factors such as growing conditions, harvest date, degree of fruit maturity. The latter specificity gives reason to doubt that determination of genotypes possessing high lycopene and β-carotene content based on one only screening procedure, at times might be not correct. The present study was designed to evaluate the reliability of the results of screening genotypes characterized by high lycopene and β-carotene content. Investigations were carried out on lines originating from hybridization between Lycopersicon esculentum Mill. and Lycopersicon pimpinellifolium Mill. or carrying genes hp and ogc on three harvest dates (July 25, August 5 and August 25). A relatively large scale of variability was observed throughout the three harvest dates in lycopene and β-carotene content in the fruits. Despite this fact, however, based on their lycopene and β-carotene content, the genotypes investigated ranked in the same way, regardless of the harvest date and the method of determining the content of the two compounds (spectrophotometrical method and HPLC). The results obtained give reason to assume that the genotypes possessing genetic potential to synthesize high lycopene and β-carotene content might be assessed based on one single analysis. The second and if possible the third analysis might be helpful as they could provide additional information on the genotype capacity to synthesize lycopene and β-carotene, as well as their varying limits throughout the harvest season.
Tomlekova, N., Atanassova, B., Baralieva, D., Ribarova, F. and Marinova, D. (2007). STUDY ON THE VARIABILITY OF LYCOPENE AND Β-CAROTENE CONTENT IN TOMATO (LYCOPERSICON ESCULENTUM MILL.). Acta Hortic. 729, 101-104
DOI: 10.17660/ActaHortic.2007.729.14
β-carotene, harvest date, lycopene, tomato

Acta Horticulturae