I've found that in general plants that are potted in a pot that is too small for full development will dwarf but develop quicker, they will flower sooner but less.
Blooming is triggered by circumstances that vary from plant to plant and might be a combination of circumstances like photoperiod, temperature ...
I am certain that it is possible with some biannuals, harder with others and likely completely impossible with others again. So a good answer would require a more specific question. I suggest digging into the principle that triggers bloom in the species.
BTW: I believe it is more likely from a plant growing closer to the equator to rely on phitoperiod as a trigger, further from the equator it is more likely to be other circumstances, like age or temperature. Compare C. Ruderalis to C. Indica as an example.
Start here (especially first chapters) for example to obtain more insight into plant time perception:
http://en.m.wikipedia.org/wiki/Photoperiodismhttp://www.ncbi.nlm.nih.gov/pmc/articles/PMC4414745/ and maybe find your 'point of attack' in the mechanism.
Questions I would like to raise:
Would a plant spontaneously flower in a desperate effort to reproduce if troubled ?
Could some plants be encouraged to flower by presence of a flowering specimen ? I think I've heard of such thing... but dont remember.
Is there plants that flower depending on water supply, maybe from monsum climates ?