Allelopatyczny wpływ wodnych wyciągów z dalekowschodnich roślin leczniczych: tarczycy bajkalskiej (Scutellaria baicalensis Georgi) oraz serdecznika syberyjskiego (Leonurus sibiricus L.) na kiełkowanie nasion gorczycy białej (Sinapis alba L.)

This paper presents the results of invetigations on the allelopathic effect of of Leonuri sibiricus herba and Scutellariae baicalensis radix on germination process of Sinapis alba. In the experiment the water extracts at 2.5, 5 and 10% concentration were used. The germination energy and capacity also the length of radicle and hypocotyl were taken into consideration. The obtained results revealed, that water extracts of L. sibiricus herba and S. baicalensis radix did not affect the germination energy and capacity. However the extracts at the highest (10%) concentration caused the inhibition of radical and hypocotyl elongation, and the exstracts at 2.5% concentration stimulated the growth of radicle and hypocotyl of S. alba.