Fruit physical and chemical characters in twelve European and Japanese plum genotypes during two harvesting years
2012
Drogoudi, P.D. | Pantelidis, G. | Papachatzis, A.
The aims of the present study were to evaluate the effects of genetic and environmental factors on the phenolic content and antioxidant capacity in plum and prune genotypes; knowledge that can be utilized by breeding programs and health concerned consumers. Measurements of fruit fresh weight, skin and flesh color, total antioxidant capacity, using the radical DPPH, total phenolic, ascorbic acid, and total soluble and acid contents were made in 8 European and 4 Japanese cultivars. Measurements of antioxidant compounds were made during two harvesting years. The ascorbic acid content varied between 2.6 and 10.5 mg 100 g-1 FW in 2005, and considerable variation was found in the total phenolic content and antioxidant capacity in 2004 (0.9-3.5 mg g-1 DW and 3.4-17.5 mg g-1 DW, respectively), and 2005 (1.1-7.2 mg g-1 DW and 3.8-18.7 mg g-1 DW, respectively). Our results revealed a great genetic diversity among genotypes in terms of their fruit antioxidant contents, with cultivars ‘Valor’ and ‘Reine Claude’ being the most prominent. There were no significant correlations found between fruit physical and chemical characters. The similarity among cultivars was examined using a principal component analyses.
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