Physiological study on coloration of plum fruits. I. Effect of ethephon on fruit composition and anthocyanin development in Santa Rosa plum (Prunus salicina)

Lee, J. C.; Lee, Y. B.

Plum, Santa Rosa, fruits were sprayed with ethephon at 80 p.p.m. 3 weeks before maturity or left unsprayed (control). Anthocyanin development was advanced by approximately 10 days in sprayed fruit and was accompanied by a rapid increase in total sugar content. The leucoanthocyanin and phenol content of sprayed fruits increased rapidly compared with the controls which showed no significant change.