Possibly a silly question but.
I know (for example) a diploid oriental crossed with a diploid Asiatic would require embryo rescue (or more...I know the cross exists but not being common possibly means the embryo rescue isn't as successful?)
But would the same hold true for tetraploid oriental (although not sure they exist? Can't find any named cultivars) cross tetraploid Asiatic?
From what I've read the need for embryo rescue is related to endosperm not matching up but in the case of a tetraploid cross that doesn't seem like it'd be an issue?
I realise there's a bunch of fertility issues with tetraploid not producing as much viable seed compared with diploid but that's not really what I'm trying to figure out.
Anyone able to shed any light on that, haven't been able to find anything specific on the topic.
Thank you.
