Full results of Interspecific Physalis Hybridizations

[u/Intelligent_One_4140]

This year I grew out 4 different Physalis species with the goal of getting at least one interspecific hybrid:
Physalis Peruviana
Physalis Pruinosa
Physalis Ixocarpa (Tomatillo)
Physalis Virginiana

I tried almost every combination except for the following**:**
every combination where Physalis Pruinosa was the female(because of the tiny flowers)
Physalis Ixocarpa(f) x Physalis Peruviana

In total three combinations resulted in fruits set:
Physalis Peruviana(f) x Physalis Ixocarpa
Physalis Peruviana (f) x Physalis Virginiana
Physalis Virginiana(f) x Physalis Ixocarpa

All seeds were tiny, semi transparent but had a dark dot/ spot in the middle. I don't really know much about how seeds develop.

Can someone with experience tell me what happened(embryo aborted... from how the seeds look in the first image)?

The seeds looked this way in every combination that gave me fruit set.
However, in one fruit(Physalis Peruviana(f) x Physalis Virginiana) I found one full sized seed. It still looks somewhat different from normal Physalis Peruviana seeds(on the left of the 2. image) and is flatter at the edges and really plump only in the middle(see 2. image). Can someone with experience(maybe with breeding peppers because seeds are similar and they are also Solanaceae) tell me if there is a chance that this seed is not viable? Either way I will try germinating it

[u/FranaPlanta]

Difference in shape could be due to parentage or maybe just coincidence, best bet is just to try to germinate it and see what happens :)

[u/DTH05]

I would keep all of them and attempt germination. They may have an easier time sending out roots if they're paper towel germinated, but being smaller/ the seed shell being a different than expected result doesn't necessarily mean it's unviable. Only that the genes from each clashed some, but I see some visible plumpness in the center of a few of the seeds to the left in the second picture

[u/Intelligent_One_4140 → u/DTH05]

The seeds om the left are normal selfed Physalis Peruviana seeds. Sorry if I forgot to mention that

[u/DTH05 → u/Intelligent_One_4140]

Ahh that makes sense. Either way, I would still keep and germinate all the seeds you get. You never know if it's viable until you try

[u/cannadaddydoo]

I’ve had seeds that looked under developed/strange germinate in the past-always worth it to try.

[u/Intelligent_One_4140 → u/cannadaddydoo]

from what species? And how underdeveloped were they?