If you mean can you collect the ripe seed and grow more Eucomis from those, yes you can, but whether they come true to the parent or not I don't know. Usual propagation method is by division of the plant.

If you mean would a new plant grow if you planted a piece of the flower stalk, no afraid it wouldn't.

They aren't always going to be like the parent. I had some that were green, others, red-ish. But they are easy from seed. Collect and store them in the refrigerator, and sow in spring. They will flower in the second or third year.