How do seedless grapes grow if they are seedless?

Answer 1

If you go to a grocery store today to buy grapes, there is a good chance that the only type of grape you can buy is seedless. Nearly all grapevines in production today produce seedless grapes.
It turns out that most fruits today do not come from seeds. They come from cuttings instead. This is true of grapes, blueberries, apples, cherries, etc. (pretty much all fruits except citrus, although scientists are working on that, too). A piece of a vine or branch is cut off, dipped in rooting hormone and then placed in moist dirt so that roots and leaves form. Because they come from cuttings, new grapevines are essentially clones of the vine they were cut from.

Seedless grapes actually do contain seeds at some point. But a genetic error prevents the seeds from forming hard outer coats like normal seeds do.

Answer 2

Grape breeders create new seedless plants by placing the pollen of a seedless grape onto the flowers of a grape variety that has seeds. They then cut open and inspect the fruit of every single plant that grows from this match. The breeders are looking for seeds -- some plants will have seeds in their fruit and others won't.

When they find a plant that has no seeds, or maybe just has very tiny traces of seeds that you wouldn't be able to taste, the grape breeders use it to make more seedless plants. One way is to cut off small pieces of the seedless plant's vine and place it in special growing conditions in a greenhouse. Eventually, the pieces of vine will grow roots and become new, individual plants.

Answer 3

My best guess is that they are grown by cross breeding certain kinds of grapes that produce "sterile" offspring (seedless grapes) - just like a mule is a cross between a horse and a donkey - mules are sterile (can't reproduce) because the genetics don't add up.

Answer 4

Smarter gardeners than I know how to take cuttings, and get roots to grow on them. Yes, a branch of the grape plant can be taken and grown.

The first time was probably an intentional mutation of one type of grape vine spliced on another. You know a mule is a cross between a donkey and a horse, but a mule cannot produce offspring. Same principle.

Answer 5

they use plant hormnes to grow the plant.. they produce one sprig that produces no seeds then they use a plant hormone to make it grow roots they keep repeating this until they have many seedless grape plants.
it is what is know as genetic modification!! lol oh well secret is no longer secret.

Answer 6

I have always wondered that too! I don't understand how that is possible. If they don't have seeds then there is no way to grow more of them!

Answer 7

Hehe. Clever.

Answer 8

They're a sterile hybrid.