**4. Conclusion**

In summary, PMRC advanced fruit maturity and improved average fruit weight compared to MRS. SSC, TA and firmness of the strawberry fruits from PMRC were significantly increased at all harvests. Fruit weight loss, juice leakage and presences of grey mould were lower, and fruit glossiness was higher for those harvested under PMRC than those from MRS. TPC, TAC as well as ORAC of strawberry were significantly changed under different production systems. The phenolic compounds assessed in strawberry were grouped into six major categories, which were anthocyanins, kaempferol, flavonols, hydroxycinnamic acids, ellagic acid and benzoic acids.

Our results can provide useful insight to growers in north cooler climate because PMRC not only accelerates strawberry fruit ripening but also ameliorates fruit quality by improving nutritional value. PMRC could be a recommended alternative of MRS.
