Rutgers x Brandy

[jeffinjonestown]

I thought I had given my brandywines a large head start over my rutgers and cherries, but the rutgers and brandys are now getting flowers at the same time. The only thing I am pretty sure of is that if the rutgers have both genes for RL and not just one, the F1 would all be RL. Do we know whether rutgers is RL RL or RL PL? I was thinking of letting some crossing happen, but only if I will be certain as to which plants next year are pure brandys and which are the crosses.