ABSTRAK
DEDES MAYANG SARI PULUNGAN : Pengaruh Periode Panen Terhadap Viabilitas Benih Rosela (Hibiscus sabdariffa L.). Dibimbing oleh HARYATI dan RATNA ROSANTY LAHAY.
Rosela memiliki periode panen yang tidak serempak atau tidak bersamaan sehingga pemanenan dilakukan secara bertahap. Penelitian ini bertujuan untuk mengetahui pengaruh periode panen terhadap viabilitas benih rosela (Hibiscus sabdariffa L.). Penelitian ini dilaksanakan di lahan percobaan Fakultas Pertanian Universitas Sumatera Utara yang berada ± 25 meter diatas permukaan laut dan dilanjutkan di Laboratorium Teknologi Benih Fakultas Pertanian
Universitas Sumatera Utara pada bulan Februari sampai Juni 2013, menggunakan Rancangan Acak Kelompok Non Faktorial, Analisis data menggunakan analisis sidik ragam dan dilanjutkan dengan uji DMRT untuk data yang nyata. Parameter yang diamati adalah bobot kering benih, bobot kering benih setelah 4 hari
dikering anginkan, kadar air benih, kadar air benih setelah dikering anginkan 4 hari, bobot 100 biji, jumlah biji/buah, laju perkecambahan, uji daya kecambah, indeks vigor, bobot kering kecambah dan pola perkecambahan.
Hasil penelitian menunjukkan bahwa periode panen berpengaruh nyata terhadap parameter penelitian bobot kering benih (g), bobot kering benih setelah 4 hari dikering anginkan (g), bobot 100 biji (g), kecambah normal (%), benih tidak berkecambah (%),bobot kering benih (g), tetapi berpengaruh tidak nyata terhadap kadar air benih (%), kadar air benih setelah 4 hari dikering anginkan (%) , jumlah biji/buah (biji), kecambah abnormal (%), laju perkecambahan (hari) dan indeks vigor (%).
Kata kunci : Periode panen, viabilitas, benih rosela.
ABSTRACT
DEDES MAYANG SARI PULUNGAN, 2013. "Effect of Harvest Periode for Seeds Viability of Rosella (Hibiscus sabdariffa L.). Unders superviced 0f HARYATI and RATNA ROSANTY LAHAY.
Rosella has a harvest period that does not simultaneously or concurrently so that harvesting done gradually. This research aimed to determine the effect of harvest on seed viability period of roselle (Hibiscus sabdariffa L.).Conducted in the experimental field of the Faculty of Agriculture, University of North Sumatra which were ± 25 meters above sea level and continued in Seed Technology Laboratory of the Faculty of Agriculture, University of North Sumatra from February to June 2013, using randomized block design non factorial. Obtained data analyzed with analysis of variance and would be continued with DMRT for significant effect. Parameters measured were dry seed weight, seed dry weight after 4 days of wind dried, seed moisture content, seed moisture content after 4 days of wind dried, 100 seed weight, number of seeds/fruit, germination rate, germination test, vigor index, weight germination and seedling dry pattern.
The results showed that significantly affect the harvest period parameter study of seed dry weight (g), seed dry weight after 4 days of wind dried (g), weight of 100 seeds (g), normal germination (%), seeds do not germinate (%), seed dry weight (g), but the effect is not significantly affected
seed moisture content (%), seed moisture content after 4 days of wind dried (%), number of seeds/fruit (seed), abnormal germination (%), the rate of germination (days) and vigor index (%).
Keywords: harvest period, viability, seed of rosella
