Special aspects of seed reproduction of the Liriodendron tulipifera L. in the context of plant introduction in the Ukraine's right-bank forest steppe

It was confirmed that in order to overcome seed dormancy and to improve the seed germination of Liriodendron tulipifera L. need stratification. Seed germination of L. tulipifera is 5,2–7,4%, the execution of seeds in one fruit is 5,3–16,0%. The depth of seeding L. tulipifera affects their germination. The seedlings of L. tulipifera are characterized by successful growth and development in the conditions of introduction to the Right Bank Forest-Steppe zone of Ukraine.