Abstract:Plant flowering and breeding characteristics are important to understand reproduction of plant population.This paper, by means of observations on outcrossing index and pollen-ovule ratio, emasculation, bagging and artifical pollination, studied the reproduction characteristics between Eleutherococcus senticosus and E.sessiliflorus in Maoershan Forest Ecosystem Research Station (127°30′~127°39′E, 45°20′~45°26′N ), in Northeastern China. Especially, this paper focuses on the flowering course, functional flora...