New Developments in the
Australian breeding program
CT15017 Building a genetic foundation for Australia’s citrus future
Research team: Malcolm SmithDeb GultzowToni Newman
For now: Commercial release of a uniquely Australian hybrid
For the future: New opportunities in scion breeding
Todays talk:
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
11C017 is a low-seeded variant of 01C011
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11C001 11C003 11C011 11C012 11C012a 11C012b 11C013 11C017 11C018 11C019 11C020 11C021
% t
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s fr
uit
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See
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r fr
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Seeds & productivity of 12 different mutations of 01C011(8 daughter trees of each mutation)
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11C001 11C003 11C011 11C012 11C012a 11C012b 11C013 11C017 11C018 11C019 11C020 11C021
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Seeds & productivity of 12 different mutations of 01C011(8 daughter trees of each mutation)
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BRS Mund2 Mund3 BRS Mund2 Mund3 BRS Mund2 Mund3
Av.
Se
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s/fr
uit
Orchard
11C017
11C011
11C012
Three different low-seeded selections of 01C011
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BRS Mund2 Mund3 BRS Mund2 Mund3 BRS Mund2 Mund3
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11C017
11C011
11C012
Three different low-seeded selections of 01C011
Release ‘11C017’ because preliminary data and experience suggest it has commercial potential.
Mandarin Hybridisation Committee decision:
Pending release of ‘15C001’ and ‘12C009’ (when productivity confirmed).
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.
New opportunities in scion breeding:
Frost damageNew source of seedlessnessBlackspot resistance breedingMelanose screeningCanker resistanceFruit flyGall waspHLB
A874
CH3
CH376
CH380CH383
CH409CH410
D103
D266
D59
D77
E79
F116
F168F20
F45
F84
ICA3
JAP7
V28
14Q055
BUX16
BUX2BUX7
CH377
CH378
CH381
CH394
CH403
CH405
D122
D193
D234D60
F34
F47
F56
F66F67
F69
F94
ICA7
ICA8 ICA9JAP3
BUX13 CH374CH385
CH388 CH389
CH393CH402 CH418
CH421
CH428
D37
D9E233F108
F131
F43
F52
F68 F86
F92 ICA1
ICA2
ICA6
US812
BUX4
CH432
BarkleyBentonICA12
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Freeze Survival
Rootstocks with at least 5 reps
Severe frost (approx. -5°C) late August, no pre-conditioning.
Tree size matters, but there is a significant genetic component.
605 trees 138 rootstocks
Single generation seedlessness breeding
Within grasp!
Potential new genetic source discovered by the Australian breeding program in the 2018 season
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
Melanose: Minor disease, but does resistance exist?Can we screen seedlings?
Skin blemish ‘wind rub’?
Evolving spray programs
Collaboration: Andrew Miles
Testing Australian leaves in Vietnam
Testing at EMAI, NSW DPI
Citrus canker: Can we transfer resistance?Can we breed resistant varieties for the nursery and backyard trade?
Collaboration: Nerida Donovan, Grant Chambers, Nga Tran
Fruit fly: Does resistance exist within citrus varieties?Can we transfer resistance via breeding?
Collaboration: Brendan Missenden
2017
2018
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BRS21 BRS23 BRS25 BRS29 Apple/pear
Tota
l pu
pae
Gall wasp: Can we infest seedlings?How does resistance segregate?
Collaboration: Dan Papacek, Graeme Sanderson
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’
THANK YOU
Professional adviceAndrew MilesGraeme SandersonNerida DonovanMark HoultPat BarkleyGrant ChambersNga TranAndre DrenthDan Papacek
Field-trial hostsBenhamsShepherdsTrottsPresslersUlcoqsBerthelsensSpencers
H&FS Royalty Fund
QDAF backupDavid InnesHelen HofmanMatt WebbNatalie DillonBrendan MissendenJustin Davies
Contributors to the breeding program during 2018
Committee MembersMandarin Hybridisation CommitteeQCIS CommitteeInternational colleagues