I finally retrieved some data from the computer crash, and was able to check my germination dates and flowering times which I'd been keeping track of in a notebook. I have read (and reputable sources) that the F1 hybrid earliness is close to the earlier parent... This made me think that the earliness of flowering was probably dominant in the F1.... that's not what I'm seeing in my results.
Although it's also said that all components of earliness are subject to environmental effects, that first interval from germination to flower should be least affected by the environment, since in this case the seedlings have been coddled along during most if not all of that time period.
I'd like to copy over a table, not sure if it will be readable, but here goes...(edit... drat, not so!)
Variety.............. Year.... DTM g-flr flr-set set-blush
Zolotoe Serdtse 2013 127 59 14 54
Zolotoe Serdtse 2014 --- 59 30
Danko................. 2013 137 72 17 48
Danko less stress2013 132 71 12 49
ZS X Danko F1.... 2014 --- 72 17
PI 120256....... 2013 154 72 51 31
PI X Danko F1 2014 ---- 60 15
The cross of PI 120256 X Danko flowered earlier than either parent, as both were late bloomers, which I guess is attributable to heterosis effects?
But ZS X Danko flowering time was the same as the later parent.
And the same is true for these:
Variety Year DTM g-flr flr-set set-blush
Rozoviy Flamingo 2013 138 72 12 54
Al Kuffa .................. 2013 130 61 20 49
Al Kuffa (less stress)013 121 59 09 53
RF X AK F1 2014 72 9
Kimberley 2013 101 46 13 42
Zolotye Kupola 2013 144 55 42 47
Kim Kupola F1 2014......... 55 8
.
These are the only crosses with 10 days or so difference between the parents' flowering time, the others gave mixed results but with few days difference and only a single plant each, not really fit to draw conclusions..
Anyway, it's another surprise for me...
