PEMATAHAN DORMANSI DAN METODE UJI VIABILITAS BENIH LAMTORO (Leucaena leucocephala Lam. de Wit.) (Breaking Dormancy and Testing Method in Determining Seed Viability of Lamtoro (Leucaena leucocephala Lam. De Wit.)

Abstract

Due to its hard seed coat condition, preliminary treatment is necessary to be applied to Lamtoro seed to improve its germination. The objective of this research was to figure out the best pre-treatment and testing method for improving seed viability and seed vigor of lamtoro. Completely randomized design with factorial patterns was arranged to assist analyzing the observed parameters. Pre-treatments for breaking seed dormancy was conducted including: control (without treatment), soaked seeds in plain water for 24 hours, soaked seeds in boiling water (100°C) and colded for 24 hours, soaked seeds in concentrated H2SO4 for 10 and 20 minutes, soaked seeds in 1% NaOCl for 5 and 10 minutes. The test results showed the best viability of lamtoro seed through sowing in both a greenhouse and laboratory that can increase germination, germination speed, germination rate and germination value was the treatment of soaked seeds in H2SO4 for 20 minutes. The best sowing test method in a greenhouse is obtained from a mixture of sand and soil media (1:1, v/v) covered with sand and in a laboratory with Top of Paper method.

Application of Arbuscular Mycorrhizal Fungi and Soil Ameliorant on the Growth of Leucaena leucocephala in Limestone Post-mining Soil Media

“…Sterilization, breaking dormancy, and sowing seeds L. Leucocephala seeds were originally from the collection of Silviculture Laboratory, Faculty of Forestry, IPB University. L. leucocephala seeds have a germination percentage 68-100% (Suita, 2019). Seed sterilization refers to Nusantara et al, (2012) that was the seeds are sterilized with a solution of NaClO (5.2%) for 5 minutes.…”