One can't forget to take into account the environmental /growing conditions & their effect on the potential end result of the produced fruit. A clone from a certain plant can produce a variance of the wanted characteristics (here being chemical/alkaloidal - Capsaicin & its friends) from the same clone grown under differing conditions. Said clone that has been continually stressed (water deprived/heat/wind/etc..) will usually (it's generally believed) contain more heat/capsaicin's than one under 'edenic' conditions. This is
especially true with any plants where the desired compounds are produced/released as 'defensive' mechanisms! More stress = more of the good stuff!! Some believe that peppers produce heat as a defensive mechanism- don't think this has been proven conclusively however. I saw a video about the UK breeder of the hottest peppers over there (Katie & Lucy) where he ripped at leaves, hit and scratched the stems & even screamed at the plants! Stressfull! Old timey' outdoor Cannabis growers swear by such- like driving a nail/stake through the stem before harvest (to produce more 'crystals'... trichomes). I would love to know of/read a study done on environmental factors
specifically related to our hot little friends - haven't really looked.
Many other factors affect the production/outcome of producing more heat- nutritional for one! Don't know of a detailed study of this either- could be very long/extremely detailed. For example- say the application of added Nitrogen in the 1st, 2nd, or 3rd week of growth might affect the end result in a positive or detrimental way. But them how
much of whatever additives (their concentration- what's ideal?). TONS of variables- essentially trying to find the perfect grow out plan! Big companies spend
decades & millions on research and determining all these factors (thinking of like big Pharma- say, opium production in Tasmania....read a study where if you add phosphorus at certain weeks growth, or supplement with other things- plants can switch from higher concentraions of Morphine & vice versa to Codeine, etc..) Plant manipulation by natural/nutritive/environmental means!
All is
waaay to complicated for just simple home/hobby growers (IMO). Personally only really care about how to produce good & beautiful results...now if your chasing the record books... then yeah, go all out. Go get a PHD at the Chili Pepper Institute!
I just like em hot (& REALLY HOT!!) & tasty!