How Soon Can a Pre-Flower Be Accurately Verified Under a Microscope??

[newguy41410]

Thundercat pretty much explained it ..... plants will mature accordingly on its own terms even from the “ same “ seed stock.

My concerns are you are looking to “ preflower “ growth in a restricted solo. Spending valuable time vegging in such a small scale. They should have been up potted so you can not waste the topping techniques on a CUP GROW .

A proper veg / rooting stage in a container big enough to allow bigger rootmass makes more sense , then cull the plants once ( the veg time to put in ) will pan out and the plant sets up the structure “ it needs “ ....

Example .....

Say both go preflower ( female ) .... now what ?...

That rootmass will not give you any plant potential since it is ready to flower and it only threw
a few lateral branches. I personally only keep solos only for simple clone jobs / seedling starts after that , I plant solo cup as a root plug and let them do their thing. I mean you already spent 30 days in that cup. There is a time when the roots will be so constricted that it will preflower BECAUSE it has no choice and sometimes it becomes a stressor to the plant. Both creating either a good or bad / herm plant.

Click to see GIF of roots>> https://i.imgur.com/Giymxo2.gifv

The roots in my "solo cup grows" are not limited to the confines of the solo cups as I use a PPK cloner/propogator to start all my seeds and clones. And they have the potential to get very large with large root masses while in my solo cups.

 

[mustbetribbin]

#6 is male.

#8 is female.

Early guess, I look at the stipules, I don't look at the new growth if it's too early to tell, notice the stipules on #6 are facing straight up on the stalk, and how they have kind of a airy thin look to them, and how they bend outwards then go straight up, there's no curve to them, which to me is identifiable with being male.

#8 looks female because if you notice, the stipules are curved inwards towards each other, and even the base where they attach to the trunk is webbed across to where the base of the two stipules are almost touching each other as well, notice the width of the stipules at the base compared to #6.( Female hips.)

Notice # 8 is more hair covered, now it is a bit difficult to tell because you've topped #6 at node 6? I'm guessing and #8 you've allowed to grow to node 8 or 9 it looks like, but #6 does look more spindly in growth and with less vigour to put out secondary branches which, usually indicates a male.

So my guess would be #6 Male, #8 Female. Cheers.

 

[grayeyes]

I will call it. The above is BS. You can't tell.

 

[newguy41410]

#6 turned out to be a female and #8 turned out to be a male. I eventually answered my own question. My assumptions based on the pre-flowers themselves were correct. I had 13 total seedlings and I was able to hypothesize the gender of 11 of them using the microscope correctly. I was able to accurately "predict" the gender of 11 of them. Two of them never showed conclusive enough pre-flowers for me to determine gender. But yes, it does work if you know what to look for.

I would never use stipules to confirm gender though. It's all in the pre-flowers

 

[mustbetribbin]

#6 turned out to be a female and #8 turned out to be a male. I eventually answered my own question. My assumptions based on the pre-flowers themselves were correct. I had 13 total seedlings and I was able to hypothesize the gender of 11 of them using the microscope correctly. I was able to accurately "predict" the gender of 11 of them. Two of them never showed conclusive enough pre-flowers for me to determine gender. But yes, it does work if you know what to look for.

I would never use stipules to confirm gender though. It's all in the pre-flowers

All in good fun, it was just a guess after all, lol.

 

[Beantown_greentown]

Hey brother sweet garden going. Don’t even stress em. I can usually tell about twenty or so days from seeds popping. You could give a little extra dark cause em to stretch a little and they’ll show faster. Usually by five branch sets the preflower is there but don’t forget this.

You don’t know what you have till you have it. Marijuana plants have the ability to be both male and female throughout there entire lives. Just be glad it’s not a true hermaphrodite and you don’t even know that yet. It is soooooo worth finding a good mom and knowing what your gonna get than chancing it every damd time. Especially with the way genetics are these days. A bunch of made up stolen strains from other people that someone finds a good pheno and next thing you know they name it some shit . So happy hunting once you find something nice make sure to take cuts off it and keep her going. Good genetics are tough to come by.

 

[Beantown_greentown]

Forget everything I said I’m an idiot and should have read the whole thing. lol. I just saw a tag pheno 8. Your the man.

 

[dirrtyd]

IMO you should be able to tell after the sixth node from seed.

 

[waterproof808]

#6 turned out to be a female and #8 turned out to be a male. I eventually answered my own question. My assumptions based on the pre-flowers themselves were correct. I had 13 total seedlings and I was able to hypothesize the gender of 11 of them using the microscope correctly. I was able to accurately "predict" the gender of 11 of them. Two of them never showed conclusive enough pre-flowers for me to determine gender. But yes, it does work if you know what to look for.

I would never use stipules to confirm gender though. It's all in the pre-flowers

#6 is Female
#8 is Male
Those are my guesses, still a little too early to tell though. Usually if the preflower has a little "overbite" like #8 its male, but sometimes they'll surprise you. Females stay pointy like #6.

Looks like I was correct. I have gotten pretty good at identifying the preflowers early. Like I said, males have a small "overbite" and females are pointy.

I also agree, looking at stipules is totally unreliable for determining sex, you should only be looking at the actual plant sex organs.

 

[Gemtree]