Stenospermocarpy

Stenospermocarpy is the biological mechanism that produces parthenocarpy (seedlessness) in some fruits, notably many table grapes.wikipedia
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Parthenocarpy

parthenocarpic parthenocarpousparthenocarp
Stenospermocarpy is the biological mechanism that produces parthenocarpy (seedlessness) in some fruits, notably many table grapes.
Stenospermocarpy may also produce apparently seedless fruit, but the seeds are actually aborted while they are still small.

Seedless fruit

seedlessseedlessnessapyrene
Seedless fruit
Seedless fruits can develop in one of two ways: either the fruit develops without fertilization (parthenocarpy), or pollination triggers fruit development, but the ovules or embryos abort without producing mature seeds (stenospermocarpy).

Table grape

table grapestabletable consumption
Stenospermocarpy is the biological mechanism that produces parthenocarpy (seedlessness) in some fruits, notably many table grapes.

Pollination

pollinatedpollinatecross-pollination
In stenospermocarpic fruits, normal pollination and fertilization are still required to ensure that the fruit 'sets', i.e. continues to develop on the plant; however subsequent abortion of the embryo that began growing following fertilization leads to a near seedless condition.

Fertilisation

fertilizationconceptionfertilized
In stenospermocarpic fruits, normal pollination and fertilization are still required to ensure that the fruit 'sets', i.e. continues to develop on the plant; however subsequent abortion of the embryo that began growing following fertilization leads to a near seedless condition.

Embryo

embryosembryonalhuman embryos
In stenospermocarpic fruits, normal pollination and fertilization are still required to ensure that the fruit 'sets', i.e. continues to develop on the plant; however subsequent abortion of the embryo that began growing following fertilization leads to a near seedless condition.

Plant hormone

phytohormoneplant growth regulatorsplant hormones
The fruit of seedless grapes is smaller than normal because seeds produce the plant hormone gibberellin, which causes fruit enlargement.

Gibberellin

gibberellinsgibberelinsGibberelin
The fruit of seedless grapes is smaller than normal because seeds produce the plant hormone gibberellin, which causes fruit enlargement.

Cultivar

cultivarsvarietycultivated variety
Grape breeders have developed some new seedless grape cultivars by using the embryo rescue technique.

Tissue culture

culturedcultureanimal tissue culture
Before the tiny embryo aborts, it is removed from the developing fruit and grown in tissue culture until it is large enough to survive on its own.

Sultana (grape)

sultanasultanasThompson Seedless
The most popular seedless grape is known in the United States as 'Thompson Seedless', but was originally known as 'Sultana'.

Thomcord

Some black cultivars are 'Black Beauty', 'Black Monukka', 'Concord Seedless', 'Glenora' and 'Thomcord.'

List of grape varieties

grape varietygrape varietiesgrape
List of grape varieties

Adenanthos

The production of seedless fruit (parthenocarpy) is common, as is seed abortion (stenospermocarpy). When a seed is present, it is white, ellipsoidal, and nearly fills the fruit.

Fruit

fruitsseed podfruiting
Seedless bananas and grapes are triploids, and seedlessness results from the abortion of the embryonic plant that is produced by fertilization, a phenomenon known as stenospermocarpy, which requires normal pollination and fertilization.