Effect of the Application of Gibberellin (GA3) on Tomato Seed Germination (Solanum Lycopersicum L.) Variety Santa Cruz

Abstract

The tomato is one of the most important vegetable, economical and nutritionally, around the world. For this reason the germination process in the tomato is a vital stage in the growth and development of plants. In this study, the effect of different doses of gibberellin over the germination of Santa Cruz variety tomato seeds was evaluated. The seeds were embedded for 24 hours in different concentrations of gibberellic acid, sown in a peat substrate in the screen house of the UPTC. A complete randomized design was used with 4 treatments corresponding to 0, 100, 200 and 400 mg L-1 of GAs with three replicates, for a total of 12 experimental units (EU), and each unit with 35 seeds. The treatment of 0 mg L-1 had a favorable impact on the mean germination time (GT), average speed of germination (ASG) and germination percentage (GP), showing significant differences with respect to the other treatments. The seeds soaked in 400 mg L-1 of GAs presented the lowest values in the variables GT, ASG and GP, attributed to negative effect this type of hormone over this tomato variety, which delayed the death of the embryo and the seed germination.

Keywords

• fitohormonas
• porcentaje de germinación
• propagación sexual
• tiempo de germinación