Anyone know male/female seeds?

No, that's not possible. I guess you would have to analyze the DNA which would be a little bit expensive.

 

Seeds are not already programed as a seed to be male or female. This is usually decided in the first 3 weeks of the seedlings life. If you put the least amount of stress on it it usually will end up female. This is basically the plant just wanting to continue its gene pool and males can make more reproductive pollen than females can make seeds (in turn saving energy and making most product possible).

 

^^ hummmmm.

you can just buy femmed seeds. and it will increase the odds of them being female. xome companies boast a 99% chance of them being female. In my Exp with them I have yet to get a femmed seed that was a male or herm.

 

that is a process which reduces the chances of the male chromosome from the male plant showing in the seed. Same as you changing your hair color. You chemically changed it, but at some point your natural hair color will show through which is why fem seeds are not 100%

 

"It was very difficult to make these seeds," he explained. "There were several years of experiments that went into this. At first, we relied on the fact that if you let females flower a long time without getting pollen, near the end of their life cycle some will try to pollinate themselves. But this did not produce a reliable amount of pollen. Then, we tried hormone and chemical agents. The hormone produced pollen, but it also affected the plants in other ways that we didn't like. We tried other applications, and found some that could change basic female plants into plants that produced pollen, which we then used to fertilize other 100% female plants to produce what we used to call ?female seeds.'"

source :Feminized seeds | Cannabis Culture Magazine in bye bye boys section

 

In MJ, gender is genetically predetermined. Females have XX chromosomes, males have XY chromosomes.

If sex was not predetermined then there would be no way to produce feminized seeds (nor would there be any point).

 

I have to call BS on that. Not true!!! It's common knowledge that pink seeds are female and blue seeds are male. Don't need a microscope!!!

 

There are some things that are correct here and some things that very wrong. First it is not possible to determine sex of a plant based on the seed. The only thing that a seed can help to determine is if its a sativa or indica based on if its spotted or not and sometimes the area from which the seed originates and if its more related to an outdoor or indoor strain based on the size. Of course this is just a way to get a rough guess of what the plant will be because there are of course many strains that are exceptions to what I previously said.
Also plants do not determine sex until after they germinate. Certain things such as temperature and the ratio of nutrients can cause the plant to become one sex over the other. For example, causing the plant to be stressed though heat tends to cause more males then females to be produced. The way feminized seeds are produced is that these come from hermaphroditic plants which create mostly female plants and the occasional plant that is doomed to be hermaphroditic. That's why plants that come from bag seed, especially when there are a lot of seeds, tend to produce seeds the grow into females. This is because these plants are usually hermaphrodites and the grower either doesnt notice the male pollen sacs or doesn't care about them.