Seeds of three Pitaya strains Hylocereus polyrhizus (Weber) Britt. & Rose, Hylocereus spp. and Hylocereus undatus Britt. & Rose were used as the experimental materials to study the germination characteristics of Pitaya seeds. The results indicated that different genotype Pitaya strain seeds had different germination rate. The germination rate of Hylocereus undatus Britt. & Rose was 93.3%, the highest among three Pitaya strain ,but the seedlings did not come out evenly, and the germination energy only 16.0%. The difference of germination en...