Super-fast breeding system developped at the University of Western Australia to double breeding efficiency in cereal crops


Researchers from The University of Western Australia have developed a super-fast breeding system in the cereals oat and triticale, which will help breeders make crop improvements in half the time as conventionally required.

The newly developed method reduces the conventional crop breeding cycle from 12 years down to six years.

Doubling the breeding efficiency means new cultivars that are better suited to the changing and variable climate will be more readily available to growers, once the new approach is implemented.

Professor Guijun Yan from UWA’s School of Plant Biology and Institute of Agriculture who led the research, said modern crop breeding has been seeking ways to shorten the generation cycle for producing pure line populations for genetic studies and selection of new cultivars.

“The fast generation cycling system involves growing plants under stressed conditions to promote reproduction, followed by in vitro culture of immature embryos,” Professor Yan said.

“This means we bypass the full seed maturation stage and advance seven generations per year.”

Oat breeder Dr Pamela Zwer from the South Australian Research and Development Institute (SARDI) who co-authored the paper said oat production in Australia is fast expanding and new cultivars with more adaptability are in high demand.

“Oat is amongst the most important cereal crops in Australia, following wheat and barley,” Dr Zwer said.

“This newly developed methodology will help us achieve new cultivars much quicker if implemented, with pure lines possible within a year.”

Previously Professor Guijun Yan and his team has developed such fast generation systems in Australian wheat and barley cultivars.

The findings were published in the paper A fast generation cycling system for oat and triticale breedingin Plant Breeding and was supported by Council of Grain Grower Organisations (COGGO) and SuperSeed Technologies.

 News from: University of Western Australia (UWA)