Suntop - Australia's Largest Plant Breeding Company · early seedling protection through either...
Transcript of Suntop - Australia's Largest Plant Breeding Company · early seedling protection through either...
Variety snapshot
APH quality classification in NSW and Queensland
Elite grain yield & broad adaptation
Suited to main season (May) plantings
Good stem, stripe and leaf rust resistance
Excellent resistance and tolerance to RLN (P. thornei)
Very good tolerance to sodic/saline soils
Moderately tolerant of black point
– Risk of screenings when affected by heat shock and drought stress
Breeders commentsSuntop is one of the most widely adapted wheat varieties ever bred for the east coast of Australia. This adaptability was established by crossing a highly disease resistant CIMMYT line (including acid and sodic soil tolerance) with a high yielding, high quality AGT breeding line. This resulted in a variety which is high yielding from central Queensland right down to the Victorian border, has excellent grain quality (APH) and a highly competitive disease resistance package.
Suntop performs well in most environments, and particularly well in areas with high crown rot and root lesion nematode RLN (P. thornei) pressure. In numerous DPI and CAS crown rot trials, Suntop consistently out yielded crown rot susceptible APH varieties such as EGA Gregory and Flanker by up to 20%.
Independent trial work carried out by AMPs suggests that Suntop also has a greater tolerance to sodic/saline soils across northern NSW and QLD compared with other commercially available wheat varieties.
The stripe rust resistance of Suntop is based on adult plant resistance (APR) genes. The expression of these APR genes can be affected by temperature, crop growth stage and nutrient status. It is strongly recommended that Suntop growers provide early seedling protection through either fungicide treated fertiliser at sowing or the inclusion of a preventative fungicide during post emergent spraying to protect the vulnerable seedling until the APR genes activate.
In general, Suntop produces grain with moderate screenings losses. However, screenings losses can be magnified in harsh finishes due to the combination of both drought stress and heat shock. Early and main season NVT data illustrate that sowing Suntop in the first three weeks of May reduces the risk of grain quality issues whilst also maximising potential yield.
Seed AvailabilityCommercial quantities of Suntop may be available through AGT Affiliates, or your local retailer. Please consult the AGT website for AGT Affiliate contact details.
Suntop is able to be traded between growers upon the completion of a License Agreement as part of AGTs Seed Sharing™ initiative.
PBR and EPRSuntop is protected by Plant Breeders Rights (PBR) and all production (except seed saved for sowing) is liable to an End Point Royalty (EPR), which funds future plant breeding. Suntop growers will be subject to a Growers License Agreement that acknowledges that an EPR of $3.25/tonne + GST has to be paid on all production other than seed saved for planting.
Predicted yield of Suntop versus control varieties: Main season NVT series Grain yield as % of region average (NVT long term MET analysis 2012-2016)
Predicted yield of Suntop versus control varieties: Early sown NVT series Grain yield as % of region average (NVT long term MET analysis 2012-2016)
South East New South Wales
South West New South Wales
North East New South Wales
North West New South Wales
Central Queensland
South East Queensland
South West Queensland
Suntop 100 102 105 105 105 105 108
Beckom 110 110 106 108 108 108 111
EGA Gregory 101 96 101 102 105 102 103
Flanker 104 101 105 107 111 109 110
Reliant 101 96 106 108 112 111 111
Lancer 92 92 94 96 96 98 96
Spitfire 94 95 99 96 98 96 98
Trial mean (t/ha) 4.48 3.72 3.95 3.40 3.42 4.39 3.10
South East New South Wales
South West New South Wales
North East New South Wales
North West New South Wales
Central Queensland
South East Queensland
South West Queensland
Suntop 105 106 111 110 106 105 110
Beckom 108 111 116 114 109 106 114
EGA Gregory 100 100 102 104 107 102 106
Flanker 105 105 107 109 113 107 112
Lancer 100 102 106 105 101 100 103
Trial mean (t/ha) 4.68 4.01 3.94 3.57 3.58 4.24 2.94
Disease, agronomic and grain quality ratings for Suntop and control varieties
Suntop Beckom EGA Gregory
Flanker Lancer Spitfire
Stem Rust MR MR MR RMR R MR
Stripe Rust MRMS MRMS MR RMR MR MR
Leaf Rust MRMS S MR MRMS RMR S
Yellow Leaf Spot MSS MSS S MSS MS MSS
RLN (P. thornei) Resistance MRMS MS MSS MS MS MS
RLN (P. thornei) Tolerance TMT MT TMT TMT TMT MTMI
Crown Rot MSS S S S MSS MS
Acid Soil Tolerance MI TMT MT - MII MTMI
Maturity Mid Mid Mid-Late Mid-Late Mid-Late Early
Plant Height Tall Short Very Tall Very Tall Short Medium
Lodging Resistance MRMS MRMS MS MS MR MS
Northern Zone Quality Classification
APH AH APH APH APH APH
South Eastern Zone Quality Classification
APH AH APH APH APH APH
Sprouting Tolerance I MII I I - MI
Black Point Resistance MR MS MS MS MRMS S
Screening Risk Moderate-High Moderate Moderate Moderate Low Low
R ResistantMR Moderately ResistantMS Moderately SusceptibleS SusceptibleVS Very Susceptible
T TolerantMT Moderately TolerantMI Moderately IntolerantI IntolerantVI Very Intolerant
Source / NSW DPI Winter Crop Variety Sowing Guide 2017, NVT and AGT data.
Published July 2017
Kerrie Gleeson, Marketing Manager, Northern NSW/QLD 0427 958 259
Meiqin Lu, Wheat Breeder 0428 856 612
Russell Eastwood, Wheat Breeder 0427 716 632
End Point Royalty Office (08) 8313 6810
agtbreeding.com.au
Disclaimer / The information contained in this brochure is based on knowledge and understanding at
the time of writing. Growers should be aware of the need to regularly consult with their advisors on local
conditions and currency of information.