In this study, the processes of pollination ecology of Fritillaria delavayi
were investigated to document its reproductive characteristics. Some individuals of F. delavayi
could produce seeds under bagging without emasculation(11%),but the rate was significantly lower than that of the natural control(87%).
It is suggesting that pollination of F. delavayi
largely depends on pollen vectors. Bombus sushikini
was the only effective pollinator of F. delavayi
and the visitation frequency was 0.003 time-flower- 1·min- 1.Flowering of F.delavayi
in whole population lasted for 35 d and single flower for 11 d.Pollen viability and stigma receptivity lasted for9 d and were relatively long compared with other Fritillaria
Consequently, bumblebee pollination and long floral longevity seem to be important for reproductive assurance of F. delavay
i in harsh alpine environments.