Im gonna try and not give a 5 hour answer, Frosted mensioned growing style, that is called the plants environment, it includes everything your plant will be subject to through it
s life. well get to genetics after, some environmental factors have little or no effect on terps, but many small differences can have a combined effect, some terps are more prevalent no matter what, but given that you probably don
t know exactly how the plants where grown
back in the day
. it would be pretty hard to emulate those conditions, some factors are obvious like light, soil and fertilisers, but then think of water treatment, altitude, time of year of growing even indoors, while the sum total of the factors that influence the plants chemistry is not perfectly well known, some other factors will not influence terps.
Now if we ignore how long ago was
back in the day
, we can think about how cannabis has a very diversified gene pool, some breaders have done extensive selective inbreeding of a
new
strain, but even in the worlds best breeding companies, they use certain shortcuts that can give them the chance to more easily supply an almost constant result, in the same catalogue some are more stable than others, but rare are those who do them up to F10 like it was done with skunk 1, they did a couple off outcrosses, then maybe a backcross before inbreeding 10 generations of select plants, often many couples are used in one generation, then there is a mix and match sequence of those couples progeny, this is why people are still seeking those beans, it has strong allèles, so much that Sam later had em produced by the TON by a hemp seed farmer in Hungary, now theoreticaly a strain like it should remain the same over generations IF the conditions where to be perfectly identical every generation, but in my oppinion it is impossible to get identical conditions over time, the planet is moving at 100 000 miles an hour…no control over that. Plants will evolve slowly if conditions are
identical
but environment has very little effect on a strong pure breeds physical expression. So a concept to be analysed is that a
true breeding
strain can show diversity of Phenotypes, but the range of those traits should be recurent, i have a strain of squash that is pure and seems to have 1 of 5 plants that make a different color fruit and this happend for three generations i grew it. So the plant you are looking for may have been one recurent pheno that is always present in small number(still could of been reproduced by clone for decades even under prohibition), but it could be the concept of
Genetic Drift
that will be greater or less of a factor depending on how
pure
a strain was reproduced in identical conditions.
So to be more pragmatic, without being nostalgic, if the plants change over generations with
good
conditions, it is up to us to respect that plants are smart(if you have a good strain) and they want to work with us if we do the right things.. i have the feeling that even the same batch of seeds changes a little over the years, but that would be akin to astrologys natal theme stuff...So what i would do is research the creation of the strain, check all the details, who had it and where did it go, check what descriptions the breaders where giving. A lot of the
foundation strains
where exchanged or shared between Arjan, Nevil, Sam the Skunkman, Ben Dronkers, Scott Blakey and others in the
90s breeding community.