Rootstocks Development Project Updates
March 2011Progress report on the Rootstocks Development Programme:
The Management Team is pleased with the progress to date and the achievements thus far.
Cohort 1 Rootstocks:
Citation, Penta, and Krymsk 6 material will be available for budding in March 2012 with the first trees expected to be available for trials in 2013.
Krymsk 86 material provided a 90% strike rate: this material is now planted, and ready to promote to the industry.
Cohort 2 Rootstocks:
Krymsk 2 and Okinawa material will be available for budding in March 2012 with the first trees expected to be available for trials in 2013.
Floraguard seed has been harvested. This will be cleaned and prepared for planting by Pattullo’s Nurseries. The first trees are expected to be available for trials in 2013.
Application has been made to place material of Gisela 5, Gisela 6, and Gisela 12 into the Level 3 Quarantine Facility at Prosser, USA prior to importation into New Zealand
Maxma 14 has proved extremely difficult to establish, and there are doubts about its virus status. Although this variety is considered to have real potential, a decision to continue with attempts to satisfactorily propagate the material will be made after discussion with Greg Reighard who has been advising the programme.
Cohort 3 Rootstocks:
Bailey, Lovell, Krymsk 1, and Krymsk 9 material is now being maintained ex-quarantine in New Zealand.
F/12/1 material is in level 2 quarantine in New Zealand.
Application has been made to place material of Wavit, Krymsk 5, and Krymsk 99 into the Level 3 Quarantine Facility at Prosser prior to importation into New Zealand.
Controller 5 – some concern has been expressed relating to fruit size when the variety is used as a rootstock for apricot and due virus indications in testing. A decision has been made to discontinue with application to obtain this material for importation into New Zealand.
HBOK 27 (Controller 6) material is now available and has been recommended by Greg Reighard to be the rootstock of choice. We will continue with the application to place this material at Prosser before importing into New Zealand.