MozART
Nový Člen
Registrován: Oct 2006
Příspěvků: 3
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Tayem de Tox: uvedom si, ze predstava o jednoduse dna retezci, kterej jasne udava jak se jaky bilkoviny budou presne tvorit pochazi hadam ze 60-70. let ... dneska se skupiny vedcu hadaj, jestli maj vliv i extrony (drive se povazpovali jen za bezcucelne "spojovaci casti" retezce) ; ukazije se, ze v bunce se vytvori vetsina retezcu podle genu lehce jinak (dost vedcu tvrdi, ze je to chyba - syntetitozovat presneji by pry bylo pro bunku neokonomicke;ale jini vedci tvrdi, ze i ty maji vyznam ...) .. a dost novejsich studii poukazuje na to, ze podle 1 stejneho genu se muzou ve stejne bunce za odlisnych okolnosti tvorit funkcne jine bilkoviny .... takze v tom tak jasno asi nebude .... a jeden z dukazu toho, jak se muze stejna genetika chovat jinak na zaklade prostredi je napr stres kytky svetlem v noci ..... asi dost z nas pestitelu si obcas udelalo hermace jinak ze samice
samozrejme nejde udelat ze seminka ganji chmel :-D , ale minimalne ovlivnit lze
SeedBanka Dutch Passion udava tohle(vsimnete si doby po kterou tyto faktory pry maji stale velky vliv!!-tohle se mi zda duveryhodnejsi, nez zde typicke spekulace o pH...):
In an experiment done in 1999 we grew 15 varieties of "feminized" seeds. We started with 30 seeds per variety. The goals were: 1) to determine the percentages of female, male, and hermaphroditic plants. 2) to compare the uniformity (homogeneity) among plants from "feminized" seeds with those grown from "regular" seeds.
1. The results were excellent. Nine out of fifteen varieties had 100% female offspring. Percentages of female plants from the other 6 varieties were between 80 and 90%. These plants were all hermaphrodites, producing their male flowers at the end of their lifecycle. Seed-setting hardly took place. No males were found.
2. Approximately 70% of the plants of varieties grown from "feminized" seeds were far more uniform than plants grown from "regular" seeds of the same variety. About 20% of the varieties were a little more uniform, while in 10% of the varieties no difference in uniformity was seen.
From literature and our own findings it appears that the growth of a male or female plant from seed, except for the predisposition in the gender chromosomes, also depends on various environmental factors. The environmental factors that influence gender are:
a higher nitrogen concentration will give more females.
a higher potassium concentration will give more males.
a higher humidity will give more females.
a lower temperature will give more females.
more blue light will give more females.
Fewer hours of light will give more females. It is important to start these changes at the three-pairs-of-leaves stage and continue for two or three weeks, before reverting to standard conditions.
To produce our feminized seeds, we start with selected female clones. Under standard conditions these female clones do not produce any male flowers. By the method we found, we are able to have these female clones produce abundant male flowers and pollen (see photos). The pollen thus produced we use for the production of our "feminized" seeds
...vyplyva mi, ze je lepsi asi na kyti fem. semen nesvitet 24 hodin (viz. posledni bod) - docela by me zajimalo, jestli tu nekdo nema zkusenost kdy sazel indoor z normalnich semen, jednou svitil na rust 24hod a podruhe 18/16 a jestli se to projevilo na pomeru pohlavi ... ???- a i zpusobem hnojeni (vic dusiku vic samic - coz by odpovidalo s tvrzenim toho "fem prostredku"...) ...
(zajimave tema jen doufam ze se nezaseka uplnejma nesmyslama jako napr. tread od zeuse o zarivkach a bude mit aspon trochu informacni hodnotu...., tak se prosim snazte psat rozumny veci k tematu a ne se furt opakovat ... THX)
Naposledy upravil MozART 24-03-2007 v 04:12 AM
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