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Old June 16, 2018   #14
bower
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Join Date: Feb 2012
Location: Newfoundland, Canada
Posts: 6,793
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Yes, to get seed from the F1 you only need one plant - if both parents are stable OP, every F1 will be identical genetically, so there's no need for extra F1 plants unless you are testing out the F1 itself.

The usual advice is to collect several hundred F2 seeds. But that may also depend on your plans and needs. I often end up with hundreds of seeds that will never be grown out - I don't have the capability to grow hundreds of plants per generation, and in addition, if I can find what I'm looking for with ten plants, well the rest of the seeds will be waiting a long time for their chance to be grown here. It's nice to have some seeds as backup, in case I needed to start over for some reason, but in most cases the seeds from one fruit of the F1 would be more than enough.
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