The pollen number per anther(PNPA) and pollen germination rate(PGR) of 20 cultivars of Chinese jujube(Ziziphus jujuba Mill.)were tested.The results showed that PNPA and PGR varied significantly among cultivars and flower buds of same cultivar during flowering stage.PNPA varied from 0 to 5556 among cultivars in the early flowering stage.PNPA was not significantly related with PGR.While PNPA increased to its highest value in late June,and the highest level of PGR appeared in mid-June.An excellent new male sterile germplasm,JMS3(no pollen and high seed rate),was found and the stability of male sterile trait of JMS1 was further confirmed.