To explore the optimal medium components for Rubus L. pollen germination in vitro, choosing three kinds of Rubus L. plants: R. corchorifolius, R. hirsutu, R. chingii, using in vitro cultivate method, the influences of different medium components on germination rate, excellent germination rate, and pollen tube length of Rubus L. pollens were researched. The results showed that the medium combination with the highest germination rate of R. corchorifolius pollens was: 1% agar+17% sucrose+0.03% H3BO3+0.001% CaC12; the medium combination with t...