The sex is determined at polination, but sex expression is not.. China is correct, I have read more than a few general botany abstracts that support the notion that acetylsalicylic acid disrupts ethylene pathways in a similar fashion to GA or ionic silver solutions, and that is understood to be the mechanism behind inducing typically diocious plants to go monocious.. Different genetics will have different resilience to sex adaptation both early, and late season.. Its commonly believed that great environmental conditions early in veg can tilt the balance toward XX expression, while less desirable conditions later in life can tilt those expressing XX to grow staminate flowers.. It actually makes sense from a propogation of species POV.. Ignoring the fact that this might sound like plants have intelligence, an XX expressing plant that is stressed can fear that available breeding partners will not be able to polinate it, therefore it does what it can to produce its own pollen since male flower growth does not require a ton of effort to achieve.. Similarily, positive conditions early tell XY polinated seedlings that its likely they will be able to take on the bigger job of seed production themselves..
I would personally avoid inducing XX expression via these means though, because those particular genetics are not tightly bound to it, and my hypothesis is that these will be more likely to also grow male flowers.. Merely an opposite form of herming..
Lastly, although it might generally work out for simple classification, the XX/XY system is BS in plants.. Its not even really 100% effective for animals either (a Y chromosome is merely an X chromosome with a minor mutation apparently caused by testosterone iirc), but we tend to diverge from it much less than plants..
http://en.wikipedia.org/wiki/Cannabi..._determination

Hey born2killspam and china, i have to agree with you both... Good ideas I will outline my thoughts a bit more...
So if sex is predetermined and lets say it is for this experiment, and we know that the male plant grows and matures faster.
Then it following that train of thought, i come to the idea the the female plant, due to survival stress, will grow first...
(more than likely will show nothing cant know that till you try)

Now this is a experiment to prove one way or the other, i can argue both sides of this, so time for experiment

The 24/7, 18/6, debate is also one the as a group we could find definitive answers too.. may show, SOG should veg clones in 24/7, and lst growers should veg in 18/7.. Who knows
Together we will!!

Hey CaveChest, Thanks for the comments.. Conditions for this one are easy... Normal germ method, paper towels, plate on top of another..
All you have to do is.....
1. number seeds
2. record time from placing in water to cracking... This is the only hard part we are looking for when the seed first cracks, before the root tip has come out.
3. Keep growing them till they sex or sex them yourself when you feel like it.
4. keep growing till you have buds.
5. Smoke your buds
6.post your research.

Right i have been thinking about a study involving the benefits of 24/7 vs 18/6 for grow styles... I also run more than one clone/veg chamber believe in redundancy

This one will have to be a little more involved, would also like to include clones as well as seeds in this
The outline.
1. germ seeds normal way
2. split seeds into two random groups
3. veg one group under 24/7 light from sprout
4. veg one group under 18/6 light from sprout

The hard part of this one will be recording stats and the period of recording..

Stats to look for...
1. Height of plant
2. Number of nodes
3. Veg mass... this is the real hard one!! even i wont kill a plant for anything but smoke so this one has two parts
3.1 Length of leaf, from tip of leaf to leaf stem node ie where the green starts
3.2 width of leaf at widest point (would like to do a average but too hard)
4. space between nodes

This will also have genius specific 4. wont really mean much unless we know the type of plant indica/sativa

The same process can be followed for clones, will just have to makes sure clones are say within 10% size of each other, with the same amount of nodes and each group is from the same mother.

Hope that all makes sence Any input is welcome!!

Alot of these light questions have been legitimately studied via other C3 plants.. PM me with an email that can accept a 1.2MB pdf if you want to read an indepth bio-chem write-up on the evolution of chemical reactions involved in photosynthesis..

Both of my seeds have sprouted and they are in separate closets. One with a 24 hour lighting, and another with 16/8. I'll be taking measurements every other day for four weeks. I'll post some results once I get enough data to be worth posting. This strain was slow to start last time I grew it, but it really took off once it got going, so it may be a week or so before there's any noticeable difference.

__________________
Yes, I live in China. No, I'm not Chinese. No, I'm not going to get killed. They save that for people who traffic hard drugs.
Chinese Bagseed Grow - June 10th, 2009 - Ongoing.

Ok....

I'm not sure if i'm retarded or i've got crap seeds but its been close to 4 days and they havnt moved an inch....
I have 2 plates, one over the top of the other and 4 seeds in the middle of them wrapped in tea towels wet with tap water.
Its pretty cold over here but i still think they should have germinated by now.

PEace
J

__________________
"so there is no sheep?"

Bagseeds can take a while, or just not want to work at all. Because they weren't grown for the seeds, they're not as viable. I only got 2 out of 8 seeds to germinate for my test.

__________________
Yes, I live in China. No, I'm not Chinese. No, I'm not going to get killed. They save that for people who traffic hard drugs.
Chinese Bagseed Grow - June 10th, 2009 - Ongoing.

Hey CaveChest, sorry to here about your seeds.... How Hot is the room temp? Should be shooting for about 25c-29c i think thats about 79f... your have to look that one up to make sure But then again i havent grown from seed for about 10 years so.... Good luck though!!!! dont give up on them just yet!!

Thanks Sloth

I havnt given up i'm still trying out seeds. Yea im in AU so its C. 21c is meant to be the optimal and i'm pretty sure thats what the entire house is heated too in winter + the heat of the lights, im pretty sure its not the temperature....

Still the process continues

peace
J

__________________
"so there is no sheep?"