Postharvest characteristics of plumcot cultivars bred in Republic of Korea
Three plumcot (Prunus salicina × P. armeniaca) cultivars, Harmony, Tiffany, and Symphony, were bred by an interspecific cross between Soldam plum (P. salicina) and Harcot apricot (P. armeniaca) in Rural Development Administration, Korea. Postharvest management, as well as cultivation technology, is essential to expand the cultivation area and increase consumption of new cultivars. In this study, we evaluated postharvest characteristics of Harmony, Tiffany, and Symphony plumcot cultivars bred in Korea. Harmony and Symphony changed exocarp color from yellow to red during storage at 25°C, however Tiffany maintained exocarp color in red. Examine of exocarp color change for Harmony and Tiffany was performed only for 4 days at 25°C due to occurrence of decay, however Symphony remained for 7 days under the same condition. During storage for 4 days at 25°C, Tiffany exhibited a dramatic decrease of fruit firmness but Symphony showed the slowest softening among the cultivars. Considering the rate of exocarp color change and fruit softening, shelf-life of Symphony was longer than the others. In addition, respiration and ethylene production rate in Symphony were significantly lower than the other cultivars at harvest and during storage at 25°C. Overall data indicated that three plumcot cultivars exhibited different postharvest characteristics as well as fruit morphology including fruit size and exocarp and mesocarp color despite sharing the same parents. Therefore, postharvest technology in each plumcot cultivar should be developed based on the cultivar-specific postharvest characteristics in further study.
Kwon, J.H., Choi, H.J., Nam, E.Y., Yun, S.K., Kim, S.J. and Lee, J.S. (2020). Postharvest characteristics of plumcot cultivars bred in Republic of Korea. Acta Hortic. 1290, 191-196
color, quality, respiration, ethylene, storage