This is a purely theoretical question which has been bugging me for some time now.
As far as I know, most cacti flowers will be able to make fruit only when pollinated by a genetically different plant (i.e. a cutting separated from mother plant will not do). Now suppose I have a flowering cactus which I pollinated with a completely different plant (not mine) and a single fruit was formed. That fruit contains multiple seeds. My question is, do the plants grown from these seeds have exactly the same genotype? Can two specimens grown from two different seeds from the same fruit pollinate each other?
Hope the question makes sense. Cheers!
Are seeds in the same fruit genetic twins?
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Re: Are seeds in the same fruit genetic twins?
Of course it make sense.
As far as I know two seedlings from the same seed pod can mate. Teoreticaly siblings (human ones) doesn't have exactly the same DNA. Nor do twins if they are from different ovule. So it should do at cacti aswell as I'm consered.
But then again....I'm no botanist.
As far as I know two seedlings from the same seed pod can mate. Teoreticaly siblings (human ones) doesn't have exactly the same DNA. Nor do twins if they are from different ovule. So it should do at cacti aswell as I'm consered.
But then again....I'm no botanist.
Re: Are seeds in the same fruit genetic twins?
Now this is something that interests me too. I've always regardeg seeds from a single pod as being so similar genetically to not being able to pollinate each other but I'm probably wrong. Do any of our experts know the answer?
Steve
Steve
Re: Are seeds in the same fruit genetic twins?
The answer is no. While the seeds are certainly closely related, they are not genetically identical.
In recognition of the great similarity of seeds in the same crossing event, orchid growers assign a grex designation to a single cross, but the different plants in the same grex are distinct.
In recognition of the great similarity of seeds in the same crossing event, orchid growers assign a grex designation to a single cross, but the different plants in the same grex are distinct.
I'll grow it as long as it doesn't have glochids. Gaudy flowers a plus.
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Re: Are seeds in the same fruit genetic twins?
Distinct enough to successfully pollinate each other?BarryRice wrote:The answer is no. While the seeds are certainly closely related, they are not genetically identical.
In recognition of the great similarity of seeds in the same crossing event, orchid growers assign a grex designation to a single cross, but the different plants in the same grex are distinct.
Re: Are seeds in the same fruit genetic twins?
Ah, so you're talking about a plant that does not self, right. Well, I don't know. Interesting question!
I'll grow it as long as it doesn't have glochids. Gaudy flowers a plus.
Re: Are seeds in the same fruit genetic twins?
No, seeds from the same cross-pollinated fruit are not genetically identical. They are just like brothers and sisters. I've grown Gymno's from my own fruits like this and the seedlings all differed visually from each other - by number and length of spines, ribs, skin colour, etc.
Even seeds from self-pollination are not identical but much more similar.
Even seeds from self-pollination are not identical but much more similar.
If your cacti mess in your job just forget about the job.
°C = (°F - 32)/1.8
°C = (°F - 32)/1.8
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Re: Are seeds in the same fruit genetic twins?
I must have phrased my question a bit badly, but my main concern is whether these "brothers and sisters" can pollinate each other. Does anyone have experience with this?
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Re: Are seeds in the same fruit genetic twins?
Yes they can but genetic variation is reduced. Its not like insest causing immediate physical issues but after generations it can cause weakening of the genes When compared to cross bread plants.
And as the walls come down and as I look in your eyes
My fear begins to fade recalling all of the times
I have died and will die.
It's all right.
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My fear begins to fade recalling all of the times
I have died and will die.
It's all right.
I dont mind
I dont mind.
I DONT MIND