Effect of H2SO4 Concentration and Seed Soaking Time on Breaking Dormancy of Rubber Seeds (Hevea Brasiliensis Muell. Arg.)

Meylin Kristina Saragih; Lince Romauli Panataria; Anre Meyksen Sinambela; Efbertias Sitorus

doi:10.55927/fjst.v5i7.105

Authors

Meylin Kristina Saragih Department of Agriculture, Universitas Methodist Indonesia
Lince Romauli Panataria Department of Agriculture, Universitas Methodist Indonesia
Anre Meyksen Sinambela Department of Agriculture, Universitas Methodist Indonesia
Efbertias Sitorus Department of Agriculture, Universitas Methodist Indonesia

DOI:

https://doi.org/10.55927/fjst.v5i7.105

Keywords:

Concentration, Dormancy, Rubber, H₂SO₄, Soaking Time

Abstract

Rubber seed dormancy limits uniform germination due to a hard seed coat. This study aimed to evaluate the effect of H₂SO₄ concentration and soaking time on germination performance of Hevea brasiliensis. A factorial Completely Randomized Design was used with three concentrations of H₂SO₄ (1%, 2%, 3%) and three soaking durations (10, 15, 20 minutes). Observed parameters were germination percentage, germination time, and number of normal seedlings. Results showed that both factors and their interaction significantly affected all parameters. The 3% H₂SO₄ combined with 20-minute soaking produced the highest germination and normal seedlings and the fastest germination time. In conclusion, chemical scarification using 3% H₂SO₄ for 20 minutes is the most effective treatment to break dormancy and improve rubber seed germination

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