Hmm. Do you know anyone else who has cukes, or another garden with cukes, you can get some more pollen from? It should survive transportation pretty well, given how it's naturally transported (on the back legs of bees).

You can also try, next year, planting some bee-attracting flowers like Queen Anne's Lace and chamomile and the like. Borage is another great one for bees that's easy to grow from seed.