I did a weird experiment… To grow the worst buds possible, but in good soil.
I took bagseeds of overfed commercially grown strains, and overfed the heck out of them, and hit them with the absolute saddest males I could find. The resulting seeds were grown correctly. The worst of the worst plants looked amazing. Tasted good, better than you can buy at least. The yields were huge huge to average huge. The effect was a crap shoot, leaning heavily in marketability’s favor. None of the bud smelled strongly enough or had a distinct/strong enough flavor for market though. Not a one out of hundreds.
Moral of the story: the only hard part to breed from current stock is the part you can’t advertise on Instagram. Don’t pay attention to any “breeder” who isn’t focused on smell chemistry. You couldn’t grow a frostless low yielding plant with today’s available genetics if you tried. That’s where Skunk really went I think. Traded quality chemicals for quantity chemicals.
I once heard a guy in a video say OG Kush fathers will have a vinegar smell. Can’t remember who the guy was. I’ve tried sifting through youtube to find the guy but it’s hours of kindergarten trash.
Stem rub? Means something. Don’t know what. Almost every plant I grew for 3 years straight, the stem rub on the bottom leaves would be sour peach rings, dead on, every plant. I have no idea what it means, but I’ve never smoked a sour peach flavored bud as a result.