Widiani, Athifah Rosi (2019) Aplikasi Teknik Skarifikasi terhadap Vigoritas dan Viabilitas Benih Kenaf (Hibiscus cannabinus L.). Sarjana thesis, Universitas Brawijaya.
Abstract
Kulit benih yang keras dan hilum cap yang menempel kuat menghambat proses perkecambahan benih kenaf sehingga menyebabkan dormansi fisik. Dormansi fisik dapat dipatahkan dengan teknik skarifikasi. Tujuan penelitian ini yaitu untuk mengetahui pengaruh teknik skarifikasi terhadap vigoritas dan viabilitas, jumlah seed trichomes dan tingkat pengelupasan hilum cap benih kenaf aksesi 1.118. Teknik skarifikasi yang diberikan meliputi pengelupasan hilum cap benih secara manual (P1), perendaman benih dengan air panas (P2: 70 C, P3: 80 C, P4: 90 C) selama 3 jam, dan perendaman benih dengan larutan H2SO4 90 % (P5, P8:5 menit; P6, P9: 10 menit; P7, P10: 15 menit). Selanjutnya benih direndam kembali dalam air biasa 3 jam (P5-P7) atau air biasa 5 menit (P8-P10). Kontrol adalah benih yang direndam dalam air biasa selama 1 menit (P0). Selanjutnya benih dikecambahkan dengan metode UKDdp. Tingkat pengelupasan hilum cap diamati secara mikroskopis. Perlakuan skarifikasi P8 berpotensi memunculkan radikula benih kenaf aksesi 1.118 lebih cepat dan lebih banyak dibanding perlakuan lainnya. Perlakuan skarifikasi P8 cenderung menghasilkan daya berkecambah, potensi tumbuh maksimum, bobot basah dan bobot kering kecambah normal lebih tinggi daripada perlakuan lainnya, serta mampu menghasilkan kecambah normal. Jumlah seed trichome tereduksi secara signifikan pada semua perlakuan skarifikasi H2SO4 90 % (P5-P10), namun perlakuan skarifikasi P8 paling efisien untuk mereduksi seed trichomes dan mengelupaskan hilum cap benih kenaf pada level 2. Perlakuan skarifikasi dengan H2SO4 90 % selama 5 menit (P8) berpotensi untuk meningkatkan vigoritas dan viabilitas benih kenaf aksesi 1.118, mereduksi jumlah seed trichomes dan efisien dalam pengelupasan hilum cap.
English Abstract
The hard seedcoat and the sticky strongly hilum cap that inhibit to the germination of kenaf seeds cause physical dormancy. Physical dormancy can be broken with scarification techniques. The purpose of this study was to determine the effect of scarification techniques on vigority and viability, number of seed trichomes, and exfoliation level of hilum cap kenaf seeds accession 1.118. The scarification technique included manually peeling hilum cap (P1), soaked the seeds in hot water (P2: 70 C, P3: 80 C, P4: 90 C) for 3 hours, and soaked the seeds in 90 % H2SO4 solution (P5, P8: 5 minutes; P6, P9: 10 minutes; P7, P10: 15 minutes; Subsequently the seeds was soaked in tap water for 3 hours (P5-P7) or 5 minutes (P8-P10). Control seeds were soaked in tap water for 1 minute (P0). Then the seeds were germinated by the UKDdp method. The level of peeling of hilum cap was observed microscopically. P8 scarification technique had the potential to emerge the radicula faster than other treatments. P8 scarification technique tend to produce germination, maximum growth potential, fresh and dry weight of normal sprouts higher than other treatments, and was capable of produce normal sprouts. The number of seed trichome was significantly reduced in all treatments of scarification with 90 % H2SO4 (P5-P10), but P8 scarification technique was the most efficient for reducing seed trichomes and sloughing off the hilum cap of kenaf seed on level 2. Scarification treatment with 90 % H2SO4 for 5 minutes (P8) had the potential to increase the vigority and viability of the kenaf seed accession 1.118, reduced the number of seed trichomes and efficiently exfoliated hilum cap.
Other obstract
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| Item Type: | Thesis (Sarjana) |
|---|---|
| Identification Number: | SKR/MIPA/2019/126/051910829 |
| Uncontrolled Keywords: | dormansi, pematahan, perkecambahan, skarifikasi, seedcoat, dormancy, breaking, germination, scarification, seedcoat |
| Subjects: | 500 Natural sciences and mathematics > 571 Physiology and related subjects > 571.2 Plants and microorganisms |
| Divisions: | Fakultas Matematika dan Ilmu Pengetahuan Alam > Biologi |
| Depositing User: | Budi Wahyono Wahyono |
| Date Deposited: | 26 Aug 2020 04:42 |
| Last Modified: | 26 Aug 2020 04:42 |
| URI: | http://repository.ub.ac.id/id/eprint/176984 |
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