The first ‘quad-layer’ oilseed rape varieties featuring enhanced disease resistance and physical properties to deliver high yields with minimal agronomic inputs are expected to be commercially available in 2020.
Announcing the development at Cereals 2019 Sarah Hawthorne, UK sales and marketing manager at DSV, the first company to develop quad layering said two new varieties are now entering the UK testing system.
“The first is a high output hybrid oilseed rape featuring Rlm7 phoma stem canker, turnip yellows virus, pod shatter and club root resistances.” The second is a Clearfield variety featuring Rlm7 phoma stem canker, turnip yellows virus and pod shatter resistances, she says.
Layering refers to a specific combination of genetic traits and physical properties with the higher the number of layers, the greater the disease resistance and yield protection features of the variety.
According to Ms Hawthorne breeding technology developed by the company is ensuring the usual complications of drops in yield and consistency when disease resistance and agronomic features are added to oilseed rape are now eliminated.
“The penalty for better disease resistance and agronomic functionality has historically been reduced yields, but modern hybrid breeding techniques are allowing us to quickly assimilate different genetic characteristics without yield drops.
“In conventional varieties you cannot get the traits in quick enough so we are seeing hybrids pulling away. In the future I hope we will be able to grow varieties without spraying for any diseases.”
The company’s double-layer variety Temptation was added to the 2019/20 RL and its triple-layer varieties Darling and Dazzler are currently on the 2019/20 AHDB Candidate List.