Light interception and radiation-use efficiency in wheat varieties with contrasting heat stress tolerance

2015

Research organisation
Funding sources

Trial details

Researcher(s) Nicholas Collins
Livinus Emebiri
Shane Hildebrand
Year(s) 2015
Contributor Department of Primary Industries NSW
Trial location(s) Wagga Wagga, ACT
Further information View external link
Light interception and radiation-use efficiency in wheat varieties with contrasting heat stress tolerance locations
Aims

To determine whether wheat varieties that differ in heat tolerance also differ in their ability to capture incident light energy and to convert the energy into biomass. Delayed sowing was used to expose the crop to rising temperatures.

Key messages

• Wheat varieties that differ in heat tolerance also differ in their ability to capture incident light energy and to convert the energy into biomass.
• Radiation-use efficiency was more closely related to grain yield in the heat-tolerant varieties than in the sensitive varieties.
• The results suggest that breeding for heat tolerance would deliver benefits for wheat growers, even under optimal growing conditions.

Wagga Wagga ACT 2015

Experiment design: Spatially optimised incomplete block design

Lead research organisation N/A
Host research organisation N/A
Trial funding source GRDC UA00147
Trial funding source DPI NSW
Related program N/A
Acknowledgments

This experiment was part of the project ‘Genetic analysis of heat tolerance in wheat’, UA00147, 2014–18, with joint investment by GRDC, NSW DPI and University of Adelaide.
Technical assistance from Danial Newton and Warren Burdach is gratefully acknowledged.


Other trial partners Not specified
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Method

Crop type Cereal (Grain): Wheat
Treatment type(s)
  • Crop : Variety
  • Adverse Effects Management : Heat
  • Sowing : Timing
Trial type Experimental
Trial design Blocked

Wagga Wagga 2015

Sow date 5 June (early sowing) and 1 August (late sowing) 2015
Harvest date Unknown
Trial design method O Other
Plot size Not specified
Plot replication Not specified
Herbicide

Knockdown: Spray.Seed® 2 L/ha, Roundup 1.25 L/ha, 100 L/ha water rate
Pre-emergent: Boxer Gold® 2.5 L/ha, TreflanTM 480 2 L ha, 100 L/ha water rate
In-crop: first post-emergent: Terbutrex® 600 g/ ha, Lonestar® 13 g/ha, 100 L/ha water rate
Second post-emergent: Affinity® 100 mL/ha, Agritone® 750 330 mL/ha, 100 L/ha water rate

Fungicide

Fungicide: Bumper® 625EC 200 mL/ha, @ 250 L water rate.

Download the trial report to view additional method/treatment information
Trial source data and summary not available
Check the trial report PDF for trial results.
Observed trial site soil information
Trial site soil testing
Not specified
Soil conditions
Trial site Soil texture
Wagga Wagga, ACT Not specified
Derived trial site soil information
Australian Soil Classification Source: ASRIS
Trial site Soil order
Wagga Wagga, ACT Sodosol
Soil Moisture Source: BOM/ANU
Average amount of water stored in the soil profile during the year, estimated by the OzWALD model-data fusion system.
Year Wagga Wagga ACT
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Climate

Derived climate information

No observed climate data available for this trial.
Derived climate data is determined from trial site location and national weather sources.

Wagga Wagga ACT

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Some data on this site is sourced from the Bureau of Meteorology

SILO weather estimates sourced from https://www.longpaddock.qld.gov.au/silo/
Jeffrey, S.J., Carter, J.O., Moodie, K.B. and Beswick, A.R. (2001). Using spatial interpolation to construct a comprehensive archive of Australian climate data , Environmental Modelling and Software, Vol 16/4, pp 309-330. DOI: 10.1016/S1364-8152(01)00008-1.

Trial report and links

2015 trial report



Trial last modified: 20-05-2026 22:18pm AEST