i guess i dont really know what this is. u mean the apical meristem (am)...which would be the uppermost part of the plant?http://www.esb.utexa...apmer/6.1-1.htm
backing up a bit...
weed is an annual so typically annuals only grow one dominate am which would be the 'brains' or the head of the plant. by wacking the primal (first) am of an annual ...ur plant builds other am's. that is why we prune cuz we want lots of am. the more the merrier so to speak. but alas its not that easy and the plant needs a brain and the next dominate am will become the dominate am brain.
so...lets say we wanna start our plant flowering early...for the sake of argument...which i dont think u need to to in this case. what u do to the dominate can easily start a chain reaction in the plant. if u can shut the light down on that dominate am...in theory u could maybe start the plant to budding earlier. a 'cap' of some sort over the dominate am for a few hours earlier in the day would certainly get ur plants to be flowering faster in the year. this could easly push a plant that is on the edge of time for flowering over the edge.
but also remember there are genetics that really trigger what the time frame is for flowering. so a 'northern lights' would bud earlier in time of year than a 'thai' veri's. so u would really HAVE to know when ur plant flowers before u could even attempt this cuz u could be doing this for a long time before u actually get the timing right. and by then the plant could have already started the budding process and u just wasted a whole lot of trips to ur illegal stand.
which gets to the critical question, "how to make my outside plant bud faster?"
first get a faster growing lifecycle plant. some varieties just are faster than others.
second. refer to the first
its all about genetics. yea u 'could' turn ur plant to flowering faster but u would have to be fairly accurate with bud timing to begin the process on. u would also need to 'cap' it gently as well as accurately every day. my guess is that something like 2 weeks earlier could mabye be achieved. frankly its an interesting question that u bring up, especially up in the farther north/south of the world.
ur plant will flower. its doing its own lifecycle. by wackin the top am off...yea maybe u are gainin some time but ur also losing the mack daddy of the plant. and in the long run...its best to just leave the damn thing along and let a fine wine do its thing and dont pick it before its time.
one more thing...if u put out older seedlings or clones...they are more mature and prob. flower early than a lesses established seedling in the year. i cant prove it but ill betchya its true.
hope that helps
fyi...ive been smokin collected big fat calyxes off of lesser dominate am node stipules and im stoned