New indoor citrus varieties

[Marcin]

Recently I've ran across two new citrus hybrids bred exclusively for indoor cultivation - First Canadian and First Canadian Golden. They are said to thrive in low light conditions and still flower and bear heavy crops of lemon/lime-like seedless fruits.
(Citron 'Odichu Kuthi' x Ponderosa lemon) x Meyer lemon: http://www.lemonbreederofthenorth.com/indoor-citrus/
(Citron 'Odichu Kuthi' x Ponderosa lemon) x some sort of lime, maybe Key lime: http://www.lemonbreederofthenorth.com/llt-lime/
Patent information: http://www.inspection.gc.ca/english/plaveg/pbrpov/cropreport/lem/app00008346e.shtml

I think this shows a new niche - breeding citrus for indoor conditions. It's true that some citrus types grow on the windowsill better than others, but still there are no exclusively indoor varieties available. And these could perform indoors even better than a Ponderosa or Meyer.

[Millet]

Marcin welcome to the citrus forum.  The First Canadian "lemon" is an exciting find.  Thanks for posting it.  Great post.

[SoCal2warm]

Ponderosa lemon is really a regular lemon crossed with citron (and regular lemons are themselves a hybrid between citron and sour orange).
Meyer lemon is a hybrid between lemon and mandarin (or basically it is, it might just be a different lemon lineage with more mandarin in its ancestry than regular lemon).