TY - JFULL AU - Dinh Ha and Tran and Chung - Ruey Yen PY - 2014/4/ TI - Morphological Characteristics and Pollination Requirement in Red Pitaya (Hylocereus spp.) T2 - International Journal of Agricultural and Biosystems Engineering SP - 201 EP - 206 VL - 8 SN - 1307-6892 UR - https://publications.waset.org/pdf/9997630 PU - World Academy of Science, Engineering and Technology NX - Open Science Index 87, 2014 N2 - This study explored the morphological characteristics and effects of pollination methods on fruit set and characteristics in 4 red pitaya (Hylocereus spp.) clones. The distinctive morphological recognition and classification among pitaya clones were confirmed by the stem, flower and fruit features. The fruit production season was indicated from the beginning of May to the end of August – the beginning of September with 6-7 flowering cycles per year. The floral stage took from 15-19 days and fruit duration spent 30–32 days. VN White, fully self-compatible, obtained high fruit set rates (80.0–90.5%) in all pollination treatments and the maximum fruit weight (402.6g) in hand self- and (403.4g) in open-pollination. Chaozhou 5 was partially self-compatible while Orejona and F11 were completely self-incompatible. Hand cross-pollination increased significantly fruit set (95.8; 88.4 and 90.2%) and fruit weight (374.2; 281.8 and 416.3 g) in Chaozhou 5, Orejona, and F11, respectively. TSS contents were not much influenced by pollination methods. ER -