Originally Posted by Ibechillin
Ive been trying to spread this around, perfect for this thread.
Originally Posted by Natural high
As someone with a biological science background and 35+ years growing experience I think I can add further to the discussion.
I have been cloning multiple strains for over 25 years and have regularly taken clones from plants well into flowering. I have also maintained a Jack Herer cut since the early 2000's. In my experience I have never had any phenotypic change in my cuttings despite not keeping a mother plant and always starting with new cuttings each grow cycle.
The so called monster cropping response is simply because when a plant is in flower the internode length is extremely short (within the bud) and so there is many nodes available to re-sprout when the clone reverts back to a vegetative state. Taking cuttings off this plant (once it is fully back to the vegetative state) will not carry this morphology across - the cuttings are invariably identical to the original mother prior to flowering. There has been anecdotal reports over the years of cutting lines changing over time - losing vigour, potency etc. but there has never been any concrete evidence of this happening and I certainly haven't observed it.
I think people who "notice or remember" the changes over time are thinking about Genetic Drift. There is NO genetic drift over time with clones.
Most clones are not exposed to any stressors. But I'm very curious to know if clones *can be stressed into genetic change.
Change due to environmental factors do occur. For example, exposure to magnetic fields can increase germination and plant weight.
(Magnetic field effects on plant growth, development, and evolution
I suspect extreme stressors can mutate the genetics. I've seen this first hand (I haven't cloned anything in my life) where the progeny of fem seed plants reverted to regular and expressed it's Thai lineage in a plant that should have been Indica dominant. They also reverted to continual flowering from 4 weeks to harvest much like Autoflower strains did when they were first developed. Two phenotypes emerged where 3/20 were single cola Indica dwarfs. This was a population of about 75 plants.
The seeds came from a NL Auto Indica drawf (stressed to the max) in the middle of 3 males (stressed to the max) from the same seed pack, that I let go until they were shooting blanks. 6 plants died from the shit they went through. The dwarf gave me 350 seeds. I planted those seeds and when I saw the strange growth, I let them some open pollinate which gave me 12k seeds. I'll plant another 100 females this year to see if the mutations are permanent in the females. I'm looking for a good location to do 50 males. I've sent seeds to the tropics where photo period plants don't get big at all to see how they'll do.
This ain't no normal NL auto.
Indica dwarf pheno was ready to pick at week 9 from seed.
Sativa phenos were packed tight like an Indica, and just kept growing and flowering.
Harvested end of September.