1. New Developments in the Australian breeding program CT15017 Building a genetic foundation for Australia’s citrus future
Research team: Malcolm Smith
Deb Gultzow
Toni Newman

2. Todays talk:
For now: Commercial release of a uniquely Australian hybrid For the future: New opportunities in scion breeding

3. First commercial release from the Mandarin Hybridisation Project!!
’11C017’ is now available for commercial plantings in Qld
Budwood with AusCitrus (Oct 2017) for southern plantings

4. 11C017 is a low-seeded variant of 01C011

5. Seeds & productivity of 12 different mutations of 01C011
(8 daughter trees of each mutation)

6. Seeds & productivity of 12 different mutations of 01C011
(8 daughter trees of each mutation)

7. Three different low-seeded selections of 01C011

8. Three different low-seeded selections of 01C011

10. Mandarin Hybridisation Committee decision:
Release ‘11C017’ because preliminary data and experience suggest it has commercial potential.
Pending release of ‘15C001’ and ‘12C009’ (when productivity confirmed).

11. More than 1,500 trees of Advanced Hybrids now in commercial test sites.
Fruit displays this season.
Grower field day anticipated June/July next year + major field day in 2021.

12. New opportunities in scion breeding:
Frost damage
New source of seedlessness
Blackspot resistance breeding
Melanose screening
Canker resistance
Fruit fly
Gall wasp
HLB

13. Severe frost (approx. -5°C) late August, no pre-conditioning.
Tree size matters, but there is a significant genetic component.
605 trees
138 rootstocks

14. Single generation seedlessness breeding
Within grasp!
Potential new genetic source discovered by the Australian breeding program in the 2018 season

15. Black spot resistant citrus?
Diverse germplasm and segregating hybrid populations in the Australian breeding program have made it possible to identify genetic resistance.
Potential new work to find molecular markers for this trait.
Collaboration: Andrew Miles, Nga Tran, Andre Drenth

16. Melanose: Minor disease, but does resistance exist?
Can we screen seedlings?
Skin blemish ‘wind rub’?
Evolving spray programs
Collaboration: Andrew Miles

17. Citrus canker: Can we transfer resistance?
Can we breed resistant varieties for the nursery and backyard trade?
Testing at EMAI, NSW DPI
Testing Australian leaves in Vietnam
Collaboration: Nerida Donovan, Grant Chambers, Nga Tran

18. Fruit fly: Does resistance exist within citrus varieties?
Can we transfer resistance via breeding?
Collaboration: Brendan Missenden

19. Gall wasp: Can we infest seedlings? How does resistance segregate?
Collaboration: Dan Papacek, Graeme Sanderson

20. HLB: Improve eating quality using non-edible HLB parents.
Building collaborations and exchange with international breeding programs.
New planting of Bundaberg hybrids, Fort Pierce, Florida.
International citrus breeders in front of HLB tolerant ‘Sugar Belle’

21. THANK YOU Contributors to the breeding program during 2018 H&FS
Royalty Fund
Committee Members
Mandarin Hybridisation Committee
QCIS Committee
International colleagues
QDAF backup
David Innes
Helen Hofman
Matt Webb
Natalie Dillon
Brendan Missenden
Justin Davies
THANK YOU
Contributors to the breeding program during 2018
Professional advice
Andrew Miles
Graeme Sanderson
Nerida Donovan
Mark Hoult
Pat Barkley
Grant Chambers
Nga Tran
Andre Drenth
Dan Papacek
Field-trial hosts
Benhams
Shepherds
Trotts
Presslers
Ulcoqs
Berthelsens
Spencers