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All Journal JURNAL PERBENIHAN TANAMAN HUTAN
Diana Prameswari
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Earth & Planetary Sciences

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Seed Dormancy Breaking Techniques of Two Species of Rattan in Central Sulawesi’s Mainstay: Daemonorops robusta Warb.ex Beccari and Calamus inops Beccari ex Heyne Retno Agustarini; Diana Prameswari
Jurnal Perbenihan Tanaman Hutan Vol 8, No 1 (2020): Jurnal Perbenihan Tanaman Hutan
Publisher : Forest Tree Seed Technology Research & Development Center (FTSTRDC)/ Balai Penelitian dan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/bptpth.2020.8.1.65-77

Abstract

Noko rattan (Daemonorops robusta) and tohiti rattan (Calamus inops) are the Sulawesi local rattans that are not yet cultivated due to obstacles in its cultivation techniques, especially in seed germination. The purpose of this study was to determine the breaking of dormancy of rattan noko and tohiti seeds. The treatments used are: control, scarification, soaked in the water for 24 hours, soaked in the mono sodium glutamat solution for 24 hours, and soaked in coconut water for 24 hours. The experimental design was completely randomized design. The parameters observed were the initial moisture content of the seed, the first day of germination, germination capacity, germination rate and germination value. The results show that both rattans seeds are recalcitrant. Noko rattan is easier to germinate than Tohiti rattan and the best treatment of dormancy breaking was used immersion with coconut water. In noko rattan, broken dormancy of the 13th day with germination capacity of 91.98%, mean germination time of 32.92 days and a germination value of 0.001. Tohiti rattan was able to break dormancy in the 29th day with 88.67% of germination capacity, 58.63 days of mean germination time and 0.001 of germination value.
Seed Breaking Dormancy Technique and Growth of Screw Tree (Helicteres isora Linn.) Seedlings Nazhira Firda Yulia; . Supriyanto; Diana Prameswari
Jurnal Perbenihan Tanaman Hutan Vol 9, No 1 (2021): Jurnal Perbenihan Tanaman Hutan
Publisher : Forest Tree Seed Technology Research & Development Center (FTSTRDC)/ Balai Penelitian dan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/bptpth.2021.9.1.43-58

Abstract

Screw tree is a shrub from family Malvaceae that has many benefits in pharmacy. Screw tree seed has very hard seed coat, so the seed must be treated before germination. The aim of this research was to assess the characteristic of fruit and seeds, effect of seed breaking dormancy, and effect of NPK fertilizer dosage on the growth of screw tree (Helicteres isora) seedlings. The results indicated that screw tree fruits belong to dry fruits with capsule form and has 5 follicles that has different direction. Screw tree seed is orthodox type that has 9 ̶ 36 seeds in one follicle with triangle and square shape. Germination technique in laboratory with soaking the seeds in hot water 100oC until the water cool for 48 hours treatment produced the best germination amounting to 65.0%.  Germination technique in green house with soaking the seeds in hot water 100oC until the water cool for 24 hours treatment was the best germination amounting to 77.0%. Seedlings fertilized with 1 g NPK doses increased screw tree growth in diameter parameter of 6.35 mm and shoot-root ratio parameter of 3.9 compared to control. 
Co-Authors . Supriyanto Nazhira Firda Yulia Retno Agustarini