How do seedless grapes propagate? Surely they need seeds?

Question

Seedless oranges and all that ... how on earth can they happen because they need seeds to create more fruit.
I am baffled. Perhaps it is because I am a hungover GorgeousFluffpot that my brain is not working properly today, but please put me out of my misery and tell me the answer!!

Answer 1

I found this on another website hopes it is useful

How do seedless grapes grow?

Seedless grapes are a special bunch.

All plants -- including grapes -- grow from seeds. But some people prefer to munch on sweet, juicy grapes without biting on seeds too. So, grape breeders (those are people who develop different kinds of grapes) use their plant smarts to grow the seedless varieties.

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. This technique is called propagation.

Or, the breeders can graft, or attach, a piece of the seedless grape variety onto a healthy vine base, called a rootstock. Think of it like this: When someone cuts their hand, a doctor sews the cut together, and the two pieces heal as one. The grafted vines grow together the same way. And, the grape variety attached to the rootstock keeps producing delicious seedless grapes.

Scientifically yours,

Twig

Answer 2

How To Grow Seedless Grapes

Answer 3

There are several methods of rooting grapes. However, neither is 100 percent successful.

The first method is called layering. Some of the canes are allowed to lay on or touch the ground and then partially covered with soil. The end should be exposed and allowed to grow. Roots should form on the stem buried under the soil. The newly rooted cane is separated from the mother plant and replanted.

Cuttings can be taken anytime in the late fall until plants are leafing out in the spring. Cuttings should consist of at least five buds off the previous year's growth. A single cane could yield four or five cuttings. Make sure you notice which end of the cutting is closest to the plant. Some people prefer to make an angle cut at the base of the cutting (closest to the plant) and a small cutting at the top. This makes it easier to remember which end is planted (the angled end.)

Early spring cuttings can be directly rooted into the soil. Make sure the soil is loose and well drained. Dip the cutting in a rooting hormone and into the soil. At least two buds should be buried. Cuttings should start budding and rooting within a month. Allow a year's growth before transplanting.

Fall cuttings should be stored, covered in damp, wrung out sphagnum moss. Place moss and cuttings in a plastic bag and keep cool, using an old refrigerator is available. Loosely seal the plastic bag. Check on the condition of cuttings throughout the winter. If mold is present, open the bag and allow the moss to dry out. If cuttings appear dry and shriveling, moisten sphagnum moss.

Follow above steps for rooting the cuttings in the spring.

Choose only disease free, top quality grapes for propagating.


http://www.garden-centre.org/Grapes%20propagation.htm

Answer 4

ITS true that fruits have seeds,but the easiest way to get seed less fruits is by spraying hormones like Gibberellins on the flowers so they transform in to fruits with out fertilization

This is what the pomologists or fruit culture developers do this is the only way to get more number of seed less fruits from a plant

Answer 5

Seedless green grapes!

Answer 6

Another technique that is popular, it to spray the flowers of the plants with hormones that trick the ovary into believing it has been 'inpregnated' by pollen. Then one thing leads to another and you have a fruit or 'womb' growing around a fake embryo. Young embryo's = seeds; and therefore no seeds. They are obviously nonreproducing fruits because of the lack of seed coated embryo.

Answer 7

Plants such as vines are often grafted. The desired variety is grafted onto a hardy stock. You take a healthy twig and basically make a clean cut on stock and new twig and bind them togehter. I'm sure there's a whole art/science to doing it right.

Answer 8

Vegetative propagation from the mother plant and under controlled conditions.
Basically using the stem.

Answer 9

By grafting,same as with orange trees.All genetic engineered seed crops are made sterile.To protect the patient on them.Not to smart if they system fails.

Answer 10

Seedless fruits are grown from seeds that have been modified. The fruits themselves are "sterile" and do not reproduce.