Cut flowering chrysanthemum: varietal improvement interventions (CRIREC)

RDP 2014-2020 Measure 16.01


Recover, rehabilitate and make available to Ligurian growers varieties of cut flowering chrysanthemums that are very commercially attractive but have now disappeared from the catalogs of both Dutch and Danish breeders.


Florcoop Sanremo sca
IPSP-CNR of Turin
CREA-OF of Sanremo

Project duration

01/03/2021 – 30/11/2022


The project

Examples of chrysanthemum varieties that have disappeared from the catalogs of major breeders include Dilana, Snowdon, and Turner, which are still in demand in the domestic market but have lost the variety’s inherent positive characteristics due to viral diseases spread by continuous agamic propagation.

To restore these varieties, sampling was conducted for:

  1. Diagnosis of viruses and viroids with Next Generation Sequencing techniques to recognize known and novel viral forms with molecular diagnostic assays for control of rehabilitated plants
  2. Taking plant material for remediation. Plants were placed in vitro, restored by heat treatments, and following meristem collection were micropropagated in vitro. Restored plants were set in a greenhouse with insect proof net to have a pool of mother plants:
        • Checked for the absence of viruses
        • For the production of agamic material to meet territorial needs

Download the slides produced for the International Society for Horticultural Science (ISHS)

Download the slides from the seminar on December 3, 2021

Download the slides of the July 29, 2022 seminar

Download slides on rehabilitation of virus-infected chrysanthemum varieties from the July 29, 2022 seminar

Download the slides of the seminar of November 04, 2022