The Tomato Brown Rugose Fruit Virus (ToBRFV) is affecting all varieties of tomatoes and is spreading
worldwide. NRGene partnered with Philoseed to develop HR (high resistant) varieties
Our high resistance source has been tested successfully by several seed companies!
We currently offer early access to seeds containing the QTLs and selection markers (patent pending).
Figure 1. Symptoms of ToBRFV on fruits of sensitive tomato plants and symptoms on tomato leaves.
Symptoms of ToBRFV on fruits of sensitive tomato plants and symptoms on tomato leaves by resistance scale.
Disease severity index (DSI):
(0) no visible symptoms;
(1) light mosaic pattern on the apical leaf;
(2) severe mosaic pattern on the apical leaf;
(3) very severe mosaic pattern.
Figure 4. Manhattan plot of significant QTL region in Chromosome 7. LOD score = 9
Minor QTL on chromosome 7
No, the ToBRFV resistance trait was co-developed with Philoseed and an independent IP protection claim has been filed.
The background used for the introgression process is a cultivated line for the big fresh tomato sector, indeterminate type.
No linkage drag has been observed for any obvious phenotypes including male sterility or plant and fruit size
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