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Originally Posted by druss
That is all true but being sterile and being parthenocarpic are two different things if you breed a sterile non parthenocarpic banana it will flower but never set fruit.
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I'm a little confused. I'm not really an expert in the botany of bananas specifically, but there are different types of sterility. Sometimes certain cultivars can be referred to as "sterile" even though they may not be entirely completely sterile.
Again, I am not entirely sure (and please correct me if wrong), but in the case of bananas, I think triploids can set fruit without forming seeds, and without having to be parthenocarpic. This may be because fertilization has been initiated, but the seeds just never form (or are underformed). A plant is regarded as sterile if it doesn't form viable seed.
It's possible I'm not really disagreeing with what you stated and this could just be a semantics point.