Variety traits

Self-fertility in raspberries

Rubus idaeus L.

The ability of raspberry cultivars to produce fruit through self-pollination. The level of this trait directly determines yield and berry quality, influencing the degree of deformation and the number of drupelets in the fruit.

In the reference 18 varieties crop Red raspberry, where this is mentioned in the description.

To assess raspberry self-fertility, genetic markers and manual pollination methods are used, comparing performance data of isolated flowers with the results of cross-pollination. The primary criteria are the percentage of fruit set and the number of well-developed drupelets in the berry, as total fruit set does not always reflect the market quality of the produce.

Significant cultivar variability is observed within the species: from high self-fertility in modern commercial cultivars to partial self-incompatibility. In the latter, self-pollination leads to a sharp decrease in the number of drupelets, resulting in the formation of deformed, 'crumbling' fruit.

The degree of self-fertility is critically important when planning plantations and growing raspberries in greenhouses in the absence of natural pollinators. For cultivars with low self-fertility, which historically included such forms as Latham and Lloyd George, the inclusion of pollinator cultivars remains a mandatory condition for profitability.

General information about the subject — on the page Self-fertility.

Sources8

Varieties of Red raspberry 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.