Yes, resistance breeding has even been intensified in recent years! New processes supported by molecular biology make the selection process faster and more efficient.
When we say natural breeding, it means we're still crossing like we've done for the last 150 years to put the male seeds on the pistil of the female flower part, so nothing changes.
What is happening now is the application of new crossing methods in the laboratory. Scientists are still working on individual genes or parts of DNA, RNA.
PIWI International is closely monitoring these new methods approved in the US and other countries; at the moment we do not accept new crossed strains from the laboratory.