how are seedless watermelon seedless?

Answer 1

Seedless fruits can develop in one of two ways: either the fruit develops without any fertilization (parthenocarpy), or pollination triggers fruit development but the ovules or embryos abort without producing mature seeds (stenospermocarpy). Seedless fruits of banana and watermelon are produced on triploid plants, whose three sets of chromosomes prevent meiosis from taking place and thus do not produce fertile gametes. Such plants can arise by spontaneous mutation or by hybridization between diploid and tetraploid individuals of the same or different species. Some species produce seedless fruit if not pollinated but seeded fruit if pollination occurs, e.g. pineapple and cucumber.

A common question is how, if they do not produce seeds, such plants can be propagated. In most cases the plants are propagated vegetatively from cuttings, by grafting, or in the case of bananas, from "pups" (offsets). In such cases the resulting plants are genetically identical clones. Oddly enough, seedless watermelons are grown from seeds. These seeds are produced by crossing diploid and tetraploid lines of watermelon, with the resulting seeds producing sterile triploid plants. Fruit development is triggered by pollination and these plants must be grown alongside a diploid strain to provide pollen.

One disadvantage of most seedless crops is that, as genetically identical clones, a pest or disease that can harm one individual can harm every individual of that clone. For example, the vast majority of commercially produced bananas come from a single clone, the 'Cavendish' cultivar, which is currently threatened worldwide by a newly discovered fungal disease to which it is highly susceptible.

Answer 2

Well whne they say seedless they dont mean TOTALLY seedless. They may ONLY have the white seeds. But the one with seeds will ahve th eblack ones

Answer 3

i found a seedless watermelon in my backyard..oh yeah it had seeds!

Answer 4

seedless watermelon's are seedless because they are picked before they are rip. Their rip just not the ripest.

Answer 5

It is a biological mutation of the genetic material(DNA) that allows the seeds
to be soft and unidentifiable.

Answer 6

Not really. They just have those "White baby" soft seeds, and no black ones'!

:)