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Variety traits

Parthenocarpy in grape

Vitis L.

The development of grape berries without fertilization, leading to the formation of small fruits. In seeded varieties, this phenomenon is called 'hen and chicken' (coulure/millerandage), whereas in seedless varieties, it is an economically valuable trait.

In the reference 3 varieties crop Grapevine, where this is mentioned in the description.

Parthenocarpy in grapes manifests in two forms: obligate, characteristic of seedless varieties of the 'Corinth' group, and facultative, which occurs more frequently in varieties with a functionally female flower type. Unlike many other crops, parthenocarpic grape berries are significantly smaller than fully fertilized fruits of the same variety and have lower sugar content and higher acidity.

In agricultural practice, the mass development of parthenocarpic berries is referred to as 'hen and chicken', which negatively affects the market appearance of the bunch. The susceptibility of a specific variety to parthenocarpy is assessed by specialists based on the proportion of small berries in the total yield or their count per bunch, with this indicator being highly dependent on weather conditions during the flowering period and the success of fertilization.

General information about the subject — on the page Parthenocarpy.

Sources6

Varieties of Grapevine mentioned in the description

Selection based on the description text, not on official evaluation: these data are absent from registers. For specific variety details, please refer to its profile.

Anita

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Vitis L. · Grapevine

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