Preliminary Study on Pollen Morphology of Four Pomelo Cultivars

The pollen of four pomelo cultivars (Wendan, Pingshan, Guanxi and Hongrou) was observed with scanning electron microscopy for comparing their pollen morphology, exine ornamentation and germinal aperture. The results showed that the pollen shape of four pomelo cultivars was all in sphere, and the size was 23.40-25.82 μm ×26.05-28.00μm, the exine pattern was fine reticulation and the germinal aperture was all in colporate.The pollen of‘guanximiyou'and‘hongroumiyou'were similar in morphology, the murus of exine was smoother, the mesh was shallow and with 4or 5of colporates (while wendanyou′and pingshanyou′only 4) .The data of the pollen morphology could be used further in the identification and systematic classification for pomelo varieties.