Encouraging keikis/new roots from cut pseudobulbs?

[greengarden]

I lost almost an entire beautiful cattleya to fusarium very recently after my patio flooded. I turfed most of it and the only thing I was able to do was cut some of the pseudobulbs higher up without roots. So i have about a dozen nice green healthy looking pseudobulbs but all have cut ends with no roots. Is there any way i can encourage these pseudobulbs to put out either new roots or keikis? I don't have easy access to hormones, etc here before anyone suggests it.