PS Am wondering if Old Apricot predominates as much when it's the pollen donor rather than the pod parent? (It can also produce white seedlings, eg when used to pollinate a strong aurea such as Golden Butter x OA.) Also, has anyone gone on to grow out its second-generation seedlings yet e.g. (OA x brug1) x brug 2? I've got second-gen seeds but will be another couple of years or so before they flower.