Several rose varieties sold by European retailers suffer significant and unnecessary quality loss as a result of exposure to ethylene, a recent Dutch study has shown. With a few preventive measures, the post-harvest performance of these roses can be greatly improved. An alternative is to develop ethylene-resistant varieties. Either way, retailers will be able to offer consumers flowers with improved colour and opening and a vase life up to five days longer than today’s average.
The study of the effects of ethylene on roses was carried out in December 2012 and January 2013 by FlowerWatch, a leading Dutch centre for supply chain expertise, monitoring and development, and commissioned by Chrysal Netherlands, a specialist in flower care solutions. In the study, FlowerWatch followed a range of 25 rose cultivars exported to European retail destinations by two Kenyan growers. The researchers monitored the ethylene concentrations to which the flowers were exposed throughout their post-harvest journey from grower to consumer. They looked at the flowers’ sensitivity to ethylene as well as to ethylene inhibitor AVB, a post-harvest conditioner developed by Chrysal.