Laimis rašė:Sveiki, kadangi neradau atitinkamos temos tai paklausiu čia, nes kažkiek į temą bus: nuo kada kanapės lapuose atsiranda THC? Ar jo būna iškart nuo išaugimo, ar nuo kažkokio momento, ar tik žydėjimo metu?
Iš anksto ačiū.
Beveik iškart. Ne tik žydėjimo metu. Neseniai nustebau suskaitęs, kad jau trečioj savaitėj, jei gerai pamenu, jo ten gali būti jau gana nemažai.
Štai tas dėmesio vertas gabaliukas apie kai kurių kanabinoidų kiekį ankstyvojoje augimo stadijoje:
"Seeds possess extremely minute quantities of cannabinoids, if any. After germination, the two seed leaves (cotyledons) appear. They also contain no cannabinoids or such small quantities that they are difficult to measure. However, within a day after the sprouting of cotyledons the first pair of true leaves appears. These have measurable quantities of cannabinoids. A study of seeds from Thailand grown in a greenhouse found that the true leaves contained about three times as much CBD as THC and that the concentration did not change during the first three weeks of growth. The cannabinoids were being synthesized as fast as the other constituents. Another study found that Turkish plants increased their CBD content from 0,07 to 0,34% in one week and that Mexican plants increased their CBD content from 0,03 to 0,2% in three weeks. Although there were only traces of THC in the Turkish seedlings (as in the adults), Mexican seedlings rose from a mere 0,04% of THC to a respectable 0,46 % at three weeks. Furthermore, at two weeks the Mexican plants showed a variation of 0,2 to 1,1% THC (the average person will get quite stoned on marijuana containing 1,1% THC). These data show that not only is the cannabinoid pattern of the mature plant already well established in the seedling, but that a two-week-old seedling may sometimes be nearly as potent as mature plant. […] very young plants can be harvested and smoked; and, provided that the seeds are derived from a high THC content strain, they will be potent." (Michael Starks, "Marijuana Chemistry", p. 49-50)