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Our products are currently operating in several local and international plant research and plant breeding facilities that are saving industries millions with reductions in use of resources, operating costs and improvements in crop success due to innovative agro technology (please see the article below). The world is changing and sustainability is becoming an increasing necessity in many parts of the world. We strive to use science and innovation to find better ways for us to carry out our existence on this planet in harmony with the environment.  

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This is sample https://grdc.com.au/Media-Centre/Ground-Cover/Ground-Cover-Issue-123-JulyAugust-2016/LEDs-speed-up-rust-resistance-development code.

LEDs Speed Up Rust-Resistance Development

Author: Professor Robert Park, Matthew Williams, Associate Professor Harbans Bariana, Dr Urmil Bansal, Dr Davinder Singh, Dr Peter Dracatos and Dr Will Cuddy

Image of Matthew Williams

Matthew Williams from the University of Sydney’s Plant Breeding Institute with wheat grown under Grow Candy LED lighting.

PHOTO: University of Sydney

To accelerate the backcrossing process used to incorporate new rust-resistance genes into commercial wheat cultivars, we have been trialling new light-emitting diode (LED) lamps with the aim of developing controlled growth facilities that are energy efficient and produce multiple generations of high-quality plants a year.

LED technology is finding increasing applications in plant growth; however, fine-tuning the light spectrum for cereal growth has taken significant trial and error, and development in collaboration with an LED supply company (Sol-Sense).

The lights now being used at the Plant Breeding Institute (PBI) mean that cereal plants can be grown from seed to harvest in 12 weeks. Compared with previous plant-growth room designs, the newly designed rooms use much less energy because the LED lamps emit very little heat.

The plants grown under LED lights maintain the same growth form they would develop in the paddock under conditions ideal for cross-pollinating, enabling important rust-resistance germplasm to be fast-tracked to Australian growers.

More than 40 per cent of the wheat cultivars currently grown in Australia carry rust-resistance genes from donor germplasm generated at PBI.

New sources of rust resistance are identified through lengthy testing in the greenhouse and field, followed by detailed genetic analyses.

In the past five years, 24 new rust-resistance genes have been found and characterised in wheat and barley at PBI. These resistant genes include: Yr51Yr55Yr56Yr57Yr58Yr63Yr66Yr67Yr70Yr71Yr72Yr73Yr74, and Yr75 for wheat stripe rust; Lr65Lr71Lr73Lr74, and Lr76 for wheat leaf rust; Sr48Sr49 and Sr56 for wheat stem rust; and Rph21 and Rph23 for barley leaf rust.

Most of these genes were found in low-quality germplasm. As a result, many had to be crossed with locally adapted germplasm before they could be used in commercial breeding.

This backcrossing typically involves seven generations of crossing to ensure the desired rust-resistance is retained, while the low-yielding, poor-quality attributes are left behind.

At the end of this backcrossing process, final selections are made and distributed to breeders for use in developing high-yielding, high-quality, rust-resistant cultivars. 

More information:

Professor Robert Park, 
02 9351 8806, 

@rpark_f (Twitter)

Dr Will Cuddy, 02 9351 8771,