Abundance and Duration of Hellebore Flowering

The abundance of hellebore flowering is defined as a quantitative indicator determined by counting the total number of flowers or generative shoots on a single plant. This trait is characterized by high intraspecific variability, with the coefficient of variation in studies reaching up to 37%.

The duration of flowering is recorded through calendar dates of phenological phase shifts, as well as by measuring the lifespan of an individual flower in days. The biological duration of flowering is limited by the time of seed maturation; however, the visual effect persists longer because the sepals, which remain on the plant after pollination, perform the function of petals in the genus.

Breeding is aimed at increasing these indicators to ensure ornamental value during the winter-spring period, which requires accounting for the influence of the sum of active temperatures and the presence of snow cover. The intensity of flower bud initiation, which affects abundance, is directly dependent on the composition of the substrate and the fertilizer application regime.