Surprisingly, I think that a shikuwasa seed I have planted can be albino or variegated. I know many of you have an interest in this type of plant, but I am not very good at growing from seed, so I could do with some advice on how to increase their chances, because I seem to remember that they had problems with photosynthesis.
If it is albino I guess it would need to be grafted onto another plant, but it is too small now and I don't know how long it can live on its own.
Agree the albio will most likely die. I didn't have any with Shiikuwasha. Your soil mixture it's not so good for germinating seeds. Pathogens from compost are not good and looks like you have organic material decaying.
I have that quite often with my seedlings (I also use a non-sterile mix with a high proportion of fresh compost). It typically affects a small percentage of the seedlings, so this doesn't bother me (there are enough healthy seedlings in the end).
I read somewhere* that removing the "peel" (outer and inner peel) of the seed helps prevent this fungus-related albinism. But perhaps this only applies if you use sterile potting soil.
If I had only a few seeds available from a rare variety, I would certainly put more effort into keeping the soil uncontaminated, but what I grow is usually very common (seeds from commercially grown lemons, oranges and bitter oranges).