Features of generative reproduction in plants of the genus Cercis L.

The challenge of germinating Cercis L. seeds, caused by their physiological and physical dormancy, necessitates the improvement of generative propagation methods using growth stimulants. This study examined the influence of organo-mineral growth stimulants on the germination efficiency of experimental species seeds, as well as their subsequent impact on the morphometric parameters of seedlings. Field germination was determined by direct counting of germinated seeds, while laboratory germination was assessed according to the International Seed Testing Association (ISTA) methodology for evaluating seed quality. Statistical data processing was performed using MS Excel (one-way ANOVA and Standard Deviation). The study revealed a statistically significant effect of the tested preparations on seed germination efficiency. It was found that Cercis siliquastrum “Alba” seeds exhibited the highest germination rate when treated with Succinic acid at a concentration of 1 g/L. For Cercis canadensis L., the preparations “Megafol” (5.0 mL/L, germination rate 70-77%) and “Alga 600” (1.25 g/L, germination rate 50-70%) demonstrated a positive effect. Additionally, experimental data showed that seedlings derived from stimulant-treated seeds exhibited greater growth increments compared to the control group. Treatment with “Succinic acid” resulted in a 2.5-2.9-fold increase in Cercis siliquastrum “Alba” seedlings. Similarly, Cercis canadensis L. seedlings from seeds treated with “Succinic acid” showed nearly double the growth increment. Application of “Radifarm” (5.0 mL/L) increased the height of Cercis canadensis L. seedlings by approximately 1.6-fold