Flowering in Hylocereus spp.: comparative analysis and self-incompatibility Flowering in Hylocereus spp.

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Ana Lid Del Ángel-Pérez https://orcid.org/0000-0003-0069-3057
Jeremías Nataren-Velázquez https://orcid.org/0000-0001-7273-7405
Juan Valente Megchun Garcia https://orcid.org/0000-0002-2902-8088
Tanith E. Villagómez-del-Ángel
Alma V. Ayala-Garay

Keywords

Cactaceae, pollination, fruit trees

Resumen

Objective: To know the variables of the reproductive component of materials for manual cross-pollination purposes, for which the search for sexual synchrony is emphasized.


Design/methodology/approach: Four materials were analyzed, two with white pulp and two with red pulp, about which it is unknown if they present sexual self-incompatibility, and the synchrony in flowering is also unknown. The flowering phase and the variables that can shed light on its reproductive behavior were analyzed


Results: It was found that the red materials present strong hercogamy, they cannot self-fertilize. There is also no floral synchrony, but there is closeness between the date of anthesis in a pitahaya with white pulp and a red one, which would allow promoting cross-pollination.


Study limitations /implications: Hylocereus spp. is consumed in a large part of the world and has acquired a very strong importance since the industrial demand is increasing; however, several of the genotypes used in commercial production in Mexico show low fruit set compared to high floral emission, which is considered self-incompatibility.


Findings/conclusions: The presence of hercogamy, stronger in the red-fleshed materials, indicates the existence of sexual self-incompatibility, explaining the fact that the materials emit a large number of flowers, but do not achieve fruit setting.

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