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Yes, the tube filaments don't care if they run off of AC, DC or rectified AC as long as the RMS value is correct.
There is one sort of theoretical aspect however. The rectified AC may contain high frequency harmonics of the 60Hz. High end audio and test equipment sometimes use DC on the filaments to prevent 60Hz hum effecting the operation. In the same way, the harmonics from rectified AC MAY cause a problem. I suppose if it did a small capacitor across the diodes might cut down on the problem. Early solid state (Ge, Si) rectifiers circuits had capacitors across the diodes because of this sort of concern.
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