Breeding efforts and testing

Finding solutions to ToBRFV

tobrfv resistance promo image

Confidence on every level – committed to delivering durable resistance

At Vegetables by Bayer, we continuously innovate for long-term solutions to challenges like ToBRFV. Because we know our growers need reliable varieties they can trust, we invest in thorough research and testing to provide quality seeds with high marketable yield potential.

We are focused on rapidly obtaining durable ToBRFV resistance in combination with excellent agronomic performance and consumer and retail benefits. One way to achieve durable resistance is by stacking multiple resistance genes. This is a stepwise process where we expect resistance levels to increase over time.

Wageningen testing facility

Our quarantine greenhouse in Wageningen, the Netherlands, is dedicated to testing ToBRFV resistance in tomatoes. It will help strengthen and accelerate our search for resistant varieties.

This infrastructure is part of a worldwide testing footprint aimed at characterizing resistance genetics under a wide range of growing conditions and infection regimes.
JD RossouwHead of Vegetables R&D, Bayer Crop Science

Working on durable ToBRFV resistance


Jan Barten, Strategic Project Lead, explains the work being done at our Wageningen facility to develop varieties with durable ToBRFV resistance.

Testing single ToBRFV infection and ToBRFV in combination with PepMV

 

Pepino Mosaic Virus (PepMV) is present in many tomato-growing countries. This creates the possibility that tomatoes can be infected by PepMV, ToBRFV, or a combination of both. 

There are potentially many combinations of infection, be it ToBRFV – PepMV or vice versa or even tri-infection with TYLCV. Through our observations and technical discussion with our customers, Vegetables by Bayer is evaluating new tomato varieties in two ways that best reflect the real life and common practices of growers: with only a single ToBRFV infection and with a controlled infection of PepMV* followed by ToBRFV infection, here described as co-infection.

*PepMV is introduced via vaccination

In these trials, ToBRFV inoculation is carried out at an early stage, some weeks after planting. Our experience is that actively growing young plants are very susceptible to ToBRFV, with the virus multiplying very fast. There does not appear to be large difference between the symptoms caused by a single ToBRFV infection or by ToBRFV infection after vaccination with PepMV. Brown spots and rings are most likely from ToBRFV.

 

No silver bullet to mitigate ToBRFV co-infection

Co-infection with aggressive viruses is a big challenge, as uncontrolled infections will reduce yields. Growers will need to adopt and maintain a high level of hygiene practices to help maximize the number of productive plants and minimize ToBRFV infections at the end of the crop cycle.

Stay up to date about ToBRFV

Need more information?

All information on Bayer IR-ToBRFV tomato varieties reflects tests and knowledge at product launch. On request, Bayer will share available data on performance, seed treatment, and detection, as permitted by law and Grower shall maintain confidentiality with respect thereto. Resistance is defined by the virus state at launch and may be updated as knowledge evolves; this disclaimer shall be deemed modified by such update upon communication thereof. The Grower is responsible for assessing local suitability and acknowledges that crop management practices may affect resistance, for which Bayer is not liable. Bayer’s only warranty is label conformity at dispatch; all other warranties are disclaimed and liability is limited to a refund up to the seed price. Grower shall not transfer any data provided hereunder without Bayer’s prior written consent and shall indemnify and hold harmless Bayer for all losses arising from any unauthorised transfer, including by third parties.

All information concerning the products given orally or in writing by any entity of Bayer Group or its employees or agents, including the information in this website, is given in good faith, but is not to be taken as a representation or warranty by this entity as to the performance or suitability of those products, which may depend on local climatic conditions and other factors. Bayer Group and all its entities assume no liability for any such information. This information shall not form part of any contract with any entity of Bayer Group unless otherwise specified in writing.

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