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Variety traits

St. John's wort inflorescence

Hypericum L.

The inflorescence of St. John's wort represents the floral part of the shoot in its upper section, which determines the yield of medicinal raw materials. The main morphometric indicators are the length of the inflorescence, the number of pairs of lateral axes, and the number of flowers per shoot.

In the reference 11 varieties crop St. John's wort, where this is mentioned in the description.

To characterize the inflorescence of Hypericum perforatum during variety testing, the length of the floral part is measured in centimeters, along with the number of pairs of lateral axes (paracladia) and the total number of flowers per shoot. Under field conditions, in micropropagated plants, the inflorescence length is 20–27 cm, the structure includes 7–10 pairs of lateral axes, and the number of flowers reaches an average of 82 per shoot.

The parameters of the inflorescence directly influence the yield of medicinal raw materials, as the main biologically active substances, such as hypericins and flavonoids, are concentrated in the flowers and upper parts of the shoots. Harvesting is carried out during the mass flowering phase before fruit formation begins, and inflorescence development is used as a marker to determine the plant's readiness for harvest.

General information about the subject — on the page Inflorescence.

Sources8

Varieties of St. John's wort 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.

Bright Blossom

Application submitted

Hypericum L. · St. John's wort

Maatschap Baumann-Jonker

2 records

Bosabel

Application submitted

Hypericum L. · St. John's wort

NL
1 record

Bosasu

Application submitted

Hypericum L. · St. John's wort

NL
1 record