Using 14/10 Photoperiod for Breeding??? Your Thoughts???

[bioguy]

I made some seeds recently and decide to sprout some this week. They are coming up now. I had an idea I wanted to share and see if anyone has experience or thoughts.

The seeds are from my "Grape Kush" female. I have no idea what it really is. I have put together that it has some Thai (nug on leaf mutation). It also has double serrated leaves that apparently come from Himalayan strains or NL5/Haze. It was pollinated with 3 unrelated hybrid males that together have a bit of everything from Skunk and Cheese to Jack Herer and OG to Blackberry.

Point being these seeds are partially unrelated polyhybrids and I expect wide variety of pheno's.

My idea is to veg the plants for a month or so and then flower the plants under 14/10. I suspect that Afghan dominant phenos will show themselves in a couple weeks while the Sativa's continue to veg.

14/10 is roughly the day length at the 35th parallel on August 1st and represents the day that flower induction is needed for an outdoor plant to finish between October 1st and 15th. It is also longer than a long tropical day and should prevent the Sativa's from flowering.

I planted 54 seeds and would like to get 2 trays to test. If I could run a tray of the more Afghan dominant plants and a tray of the Sativa dom's it would be cool (and helpful for feeding, training... etc).

Final thought...This might also work on males?!?!? Maybe used to find the Afghan or Sativa dominant phenos for more accurate crosses or to split a line into 2 halves.

 

[bioguy]

The more I think about this it seems like it is no different that growing seeds a little farther north each year. That is that it would select for early flowering plants the same way outdoor selection does.

 

[Ranger]

if you have full sativas they shouldn't flower at 10 hours of darkness and the indica dominant ones "should" i say should because i have had some that wouldn't flower at 10 hours of darkness, they needed 11 to get going.

 

[Granger2]

Bioguy,
You're logic looks sound to me. It'll be interesting to see the results. I hope you'll keep us apprised on how this progresses. Thanks for innovating. Good luck. -granger

 

[northerngrafta]

I need to refer to my reference but I'm sure that 18/6 is for indicas and 13/11 will show more sativa traits if I've got it the right way round the way it was explained to me was that seed banks used these light cycles and everything inbetween to identify different genetic traits

 

[bioguy]

I need to refer to my reference but I'm sure that 18/6 is for indicas and 13/11 will show more sativa traits if I've got it the right way round the way it was explained to me was that seed banks used these light cycles and everything in between to identify different genetic traits

I've read someone (I think DJ short) recommends those photoperiods (13/11) for enhancing the Sativa traits (like the clear high).

I am just trying to cut the batch in "2 halves" if you will. I will probably still flower under 12/12. I just want to use this for sexing.

I am crossing my fingers that this will let me get some/most/all of the long flowering phenos into one tray and the others into another.

We will see.

Thanks for following.

 

[bioguy]

Bioguy,
You're logic looks sound to me. It'll be interesting to see the results. I hope you'll keep us apprised on how this progresses. Thanks for innovating. Good luck. -granger

Thanks for the confirmation I'm not crazy. Sometimes I wonder

I will keep everyone posted. I just had the first few sprouts come up. Once its rolling I'll start posting. I may start a journal for these because it's the first time I've sprouted my own seeds - and my clones are looking great...I should a room with some braggin rights this time around.

 

[Easy7]

At 40 north, I see plants start to stretch at the last two weeks of July. Budsets at first of August.

 

[bioguy]

At 40 north, I see plants start to stretch at the last two weeks of July. Budsets at first of August.

Thanks, thats great info.

It translates to 14h 45m on July 15 and 14h 15m on the 1st. I suspect those photo periods are dependent on the constant shortening of the days so I will use the 14h 15m.

That is, if this even gets going. Its been really cold and germination is suffering (at least thats where I'm putting the blame....I might have made a bunch of duds...IDK). I have about 10 out of 54 on day 5. I rigged a heater last night so hopefully they will come up.

Maybe I get lucky and only the Afghan doms can sprout when its really cold.

Either way, its always a learning process and that keeps it fun.

 

[bioguy]

It is rumored in CO that plants planted after June 21st flower faster because the days get shorter every day after that... but are still long enough for a sufficient veg. Seems fishy given that is only a 15 hour day or maybe its the Afghan equivalent of sprouting Sativa under 12/12. IDK, just a thought.

 

[bioguy]

Turns out it was not day 5 it was day 11 and only 10. OUCH

I got the temps up and the sprouts started to flow in. But it was too late so I added another 18 seeds that are coming up now. Last night a couple containers had new sprouts from both batches pop on the same day (one 4 days, the other planted 20 days ago).

I can't believe they did not rot yet.

I bet I'll have 40 or so to play with when its done. I'll be back when they are ready to flower but I won't sex until mid march so don't hold your breath...lol