Variety traits

Poinsettia Stem Breakage

Euphorbia pulcherrima Willd. ex Klotzsch

Stem breakage is the tendency of lateral shoots to snap at the nodes, which critically degrades the plant's marketability during packaging and transport.

In the reference 9 varieties crop Poinsettia, where this is mentioned in the description.

Poinsettias are characterized by high stem fragility, which often manifests during mechanical handling while sleeving or transporting the plants. Although no specific rating scales for this trait exist, breeders use stem diameter as an indirect indicator for evaluating resistance, where values greater than 7.5 mm correlate with increased strength.

Susceptibility to breakage is influenced by varietal characteristics and agrotechnical factors. A key role is played by the mineral nutrition balance: low calcium levels combined with an excess of potassium and ammonium nitrogen increase tissue brittleness, whereas silicon application helps strengthen cell walls and improves overall stem mechanical stability.

When evaluating varieties, agronomists rely on the stem breakage resistance index, which reflects the ability of shoots to withstand standard production handling. Incorrect planting density and errors during pinching also significantly increase the risk of damage to lateral shoots.

General information about the subject — on the page Lodging.

Sources8

Varieties of Poinsettia 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.