I'm curious as to who you obtained this information from...Can you post a source?
Scientifically speaking, it makes very little sense to think that increased air salinity would have any major effect on a plant's metabolic function, especially a function regarding primary and secondary resin production. In general, resin production may increase if a plant is exposed to elements it isn't exactly appreciative of, as a defense mechanism. This process, however, would counter intuitively decrease bud mass, not to mention, secondary resin production will decrease.
I'm not sure if you know what I mean by primary and secondary resins....If you get the chance, look into a book called "Plant Resins" (The only one out there, can't think of the author at the moment).
It goes into great detail regarding resin production, and why plants go about doing what they do.
Basically, your primary resins mostly consist of terpenes, or scent molecules that serve multiple purposes for the plant (defense, pollen attraction, anti-fungal, etc.).
Your secondary resins consist of extremely complex molecules that are often composed of chains of simple resins, and the biological function of these secondary resins is relatively unknown. As far as scientists know, the plants just produce them to produce them. They serve no purpose regarding the persistence of the plant's genetics.
THC, CBD, CBC, and THCV all fall under the category of secondary resins. They are produced in highest amounts when the plant is unstressed, and has no other processes it needs to carry out.
So while stressing a plant may increase resin production, it isn't particularly the resin you may be looking for. Hope this helps you out mate, and any questions or responses are welcome!!