[SourPurp]

I searched and could not find any posts on this topic so sorry if it's been covered already... I am wondering if any growers have discovered a technique to determine to eventual sex of a seed simply by examining physical characteristics of it? I heard many years ago that it was possible..if I remember correctly it had something to do with examining the 'butt' or endpoint of the seed. If the the 'butt' was flat, it meant either a male or female. So, a little while ago, I remembered this and decided to really examine a batch of my seeds carefully to see if I could accurately separate the seeds into two piles...one with flat endpoints, and one where the endpoints have one side higher than the other. I found that for most of the seeds, I could easily separate them, but for about 5-10% of them, it was too hard determine one way or the other....so now I can grow them out, labeling each plant as to which pile it was in and see what the male/female ratio turns out to be. Has anyone else tried a similar technique and what was your results?

[SourPurp]

And just to be clear, the 'endpoint' as I am defining it is the point which stays connected as a hinge when the seed germinates.

[Harry Gypsna]

Simply put- NO there is no way to tell the sex of a seed-other than grow it out and wait and see.

[supermanlives]

not that i have heard of.

[Chimera]

No, you cannot tell the sex of a seed before it is germinated.

You can however extract the DNA after the cotyledons or first true leaves appear, and run a test called a PCR (polymerase chain reaction) for male associated DNA markers- you may need to hire a lab to do this. MADC markers are a series of markers isolated from cannabis and found to appear on the long arm of the Y-chromosome, making them useful for identifying plants with Y-chromsosomes, ie males.

That's your best bet. I'm set up to do PCR in house, so plants can be screened for markers like MADC, or B/T alleles, or any other marker you can pull from the available genomic data, at an extremely early age, avoiding the necessity to grow plants out to full maturity to determine phenotype.... this is essentially a method for determining the genotype of the plant, within just a few days of planting the seed.

Hope that helps,
-Chimera

[smithsutton]

now how many times has this come up in the past .. lol .. hey chimera been a long time .. good to see ya ..

ss ..

[LittleAmsterdam]

Germinating and growing seeds take 'Technique'. There's a lot that don't know how to grow from seed. AMAZING. It's like a guy not knowing how to use a wrench. LOL

[Hash Zeppelin]

All non-feminized seed's sex is undetermined, and it decides based quality of conditions. using blue light like Metal halide or blue spectrum cfl's, plus a little extra nitrogen, high humidity, and low stress encourage a seed to be female. I read about it and tested it. When I pop seeds they are about 90 percent female with my technique. last time i popped beans i got all females.

If this does not work than I have been constantly lucky with seeds for 12 plus years, and so have the other people that do this. However you still get throw away females sometimes.

[Cool Moe]

the rounder ones with the vajayjays are the ladies

[smithsutton]

Originally Posted by Cool Moe

the rounder ones with the vajayjays are the ladies

yah and u prolly sell female seeds too .. .. we understand that u dont ..

thanks ..

ss ..