Germination Behavior of Deteriorated Shallot Seeds Applied with Zinc as Priming Agent

Abstract

This study aims to see the effect of applying the seed priming method with the provision of micronutrient zinc (Zn) on the germination performance of two types of shallot varieties from deteriorated botanical seeds. The study was arranged on a completely randomized design with two factors. The first factor was the type of variety consisting of two combinations: Lokananta and Maserati. The second factor is priming, composed of unprimed, hydropriming indole 3 acetic acid (IAA), zinc oxide (ZnO), zinc sulfate heptahydrate (ZnSO4.7H2O), zinc ethylenediaminetetraacetic acid (Zn-EDTA). The combination of the Maserati variety and Zn-EDTA priming recorded the fastest mean germination time (2.82 days), the highest germination rate index (16.15%/day), and the coefficient velocity of germination (35.51) compared to other treatment combinations. The combination of the Maserati variety and ZnSO4.7H2O priming recorded the highest germination percentage (86%) compared to different treatment combinations. Then, the combination of Lokananta and ZnO priming recorded the most increased vigor index (453.20), produced the most extended plumule length (55.30 mm), longest radicle length (11.00 mm), fresh weight (19.00 mg), and dry weight (2.34 mg) compared to other treatment combinations. Combining two varieties with seed priming with Zn improves deteriorated shallot seed germination potential.

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