Abstract: A two-year investigation on the blossom character and insect pollination of endangered plant Prunus mongolica Maxim showed that the role of wind-pollination could be neglected because the wind-diffused pollen of P. mongolica decreased rapidly with increasing distance. The nectar and the smell of P. mongolica blossom played a main role in inducing insect pollination. A total of seventeen kinds of insects including bees, flies and butterflies were observed as the pollinators, whose visiting frequency had a close relation to the characters of blooming. These insect pollinators preferred to visit the blossom in its flourishing anthesis. P. mongolica tended to be cross-pollinated by insects, but lacked of faithful pollinators.

Key words: Identification, Biocontrol strain X₃, 16S rDNA, Cucumber, Seedling damping-off