Here in France we use to say that most of basjoos cannot produce seeds because they are of Tc..A friend of me has an ancient clump of basjoo(in my area basjoos are grown since about a century and las year visiting his garden we found some bananas with seeds ;i tried to germinate them but with no success.My friend gave me a pup so i'll see in the future what could be done with it...
here are the seeds(but the banana was unripen)