Interruption of Seed Dormancy and In Vitro Germination of the Halophile Emerging Crop Suaeda edulis (Chenopodiaceae)
2021
Francyelli Regina Costa-Becheleni | Enrique Troyo-Diéguez | Alejandra Nieto-Garibay | Luis Alejandro Bustamante-Salazar | Hugo Sergio García-Galindo | Bernardo Murillo-Amador
Suaeda edulis (Flores Olvera &: Noguez) is a halophile species that grows in saline environments, with concomitant difficulties to germinate and reproduce. Once a null germination under a salinity gradient or fresh water was observed, a plant-growth bioregulator (BioR) was applied to interrupt dormancy and improve germination in vitro. This BioR is composed of gibberellins and adjuvant regulators: and 12.5, 25.0, and 37.5 mg L&minus:1 of gibberellins with immersion at 24, 48, and 72 h were assayed. Most of the normality and homoscedasticity tests were favorable, except in three of 24 cases. On the germination percentage (transformed values), the dose 25.0 mg L&minus:1 reflected the highest values of 5.5 and 6.0 units at 48 and 72 h. For the mean germination time, the highest level of 37.5 mg L&minus:1 at 24 h reflected the best response. For the germination rate, the best one was 25 mg L&minus:1 at 48 h, reaching 12% per day, but for the germination speed coefficient, the best value was observed with 25.0 mg L&minus:1 at 24 h. It was concluded that to improve germination of S. edulis seeds, it is necessary to assess a dose-gradient of gibberellins, starting at 25.0 mg L&minus:1, with higher values to break dormancy.
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