druss

What they wrote is true but shows an incomplete understanding. "Some seedless fruits come from sterile triploid plants"? Thats great but in the case of musa there are also parthenocarpic diploid and tetraploid sterile plants producing fruit as well as fertile diploid triploid and tetraploid producing seedless and seeded fruit depending on pollination. The parthenocarpy of the banana is dependent on the genes not ploidy. The 4 x 2 method is one i mentioned above and is usually the end of a line of crosses on both sides of the parentage to imbue the final triploid with the genetic characteristics desired. Parthenocarpy is simply one such genetic characteristic. Also bananas can fruit with absolutely no pollination at all. Grow a variety in isolation that has female only female flowers chop off the bud before any Male flowers open, it will still fruit.