The Reg can do better!
Not quite sure what "simulated conditions" would be, or how they would differ from actual conditions. The fact that nobody else does this anymore points out that this has not been cutting-edge science for some decades, if ever. It's already possible to induce as many mutations as one wants on Earth (even more than one per seed on average), and to choose among methods that cause big changes (e.g. deletions/inversions) or small changes (e.g. single-base changes); the reason for this weak Chinese PR plant is most likely to try to drum up domestic support for the country's space program.
Now, if mutated sees produced Tang, that would be worth reading about!