Pengaruh Radiasi Sinar Gamma Terhadap Tanaman Kacang Hijau (Vigna Radiata L.) Pada Kondisi Kekeringan

Demand of mungbean will be increase, so the production must be increased. One of efforts is to create superior variety by giving mutation.The goal of this research is to find out the effect of four level radiation dosage and drought stress to growth and yield of mungbean (Vigna radiata L.), has finished in greenhouse of Agriculture Faculty of North Sumatera University, Medan conducted from May until August 2012. This Research was conducted using by Randomize Block Design factorials.The first factor is radiation dosage with four levels : 0, 10, 20, and 30 krad. The second factors is drought stress: 100%, 80%, 60%,and 40% KL. Data were analyzed with ANOVA and continued with HSD.The result of research showed the radiation significantly affected to the harvesting time. Drought stress significantly affected to the root volume, the number of pod per plant,and weight seeds per plant. The combination between dose of radiation and drought stress significantly affected to flowering time

Respons Cekaman Garam Terhadap Pertumbuhan Dan Konsentrasi Rantai Panjang Polyisoprenoid Pada Mangrove Sonneratia Alba Smith.

Mangrove is one of the richest bioactive source naturally and is able to remove excess of salt. The purpose of this study was to determine optimum salinity concentration for growth of S. alba seedlings and to evaluate effect of salinity on polyisoprenoid composition. S. alba seedlings were used with 5 treatments namely 0%, 0,5%, 1,5%, 2%, and 3% grown for 3 months. Results showed that optimum growth for S. alba seedlings characterized by height, diameter, and dry weight of root in 1,5% salinity, the best number of leaves and moisture content of root were in 0,5% salinity. On the other hand, dry weight of shoot, moisture content of shoot, and ratio of shoot to root were found in 3% salinity, respectively. Analysis of Polyisoprenoid in S. alba seedlings in 3% salinity was higher concentration than 0% treatment

Keragaman Genetik Tiga Populasi Kelapa Sawit (Elaeis Guineensis Jacq.) Tipe Pisifera Berdasarkan Marka Rapd

Palm oil producing oil is one of the famous of oil palm plantations as a source of producer non- petroleum oil for Indonesian foreign exchange. Superior varieties of palm oil produced by various research institutions that is tenera originated crossly from dura x pisifera (DxP). Pisifera has an important function in the production of seed of oil palm. Pisifera population is very important to be managed and developed . A RAPD is a method to identify a number of large polymorphism DNA in the genome quickly, efficiently and suitable for the study of genetic diversity. The purpose of this research is to analyze genetic diversity on pisifera type of palm oil by three population namely Yangambi origin, LaMe origin and LaMe silang lanjut in Bangun Bandar seed productions PT Socfin Indonesia analyzed by RAPD markers. Eighteen sample for each pisifera population of Yangambi origin, LaMe origin and LaMe silang lanjut showed moderate level of genetic diversity which is shown the average value of 0.24 with the highest was 0,28 and the lowest value was 0.21. The percentage of highest polymorphic on the primer 15 and primer 19 of LaMe origin which reached 100%. The Polymorphic information content (PIC) highest on the primer 11 was on Yangambi origin and primer 10 was laMe silang lanjut of 0.49, while to the lowest PIC on primer 21 of LaMe origin was 0.01

Identifikasi Keragaman Molekuler Material Genetik Kelapa Sawit (Elaeis Guineensis Jacq.) Berdasarkan Marka SSR (Simple Sequence Repeats)

Oil Palm very important for Indonesia. The plant breeading programs were done to found the best varieties. Identification of moleculer varians is the one steps of plant breeding programs. The purpose of this research was to analysis moleculer varians of genetic material of oil palm based on 4 SSR markers, there were mCnCIR0038, mEgCIR0894, mEgCIR3292 and mEgCIR3663. DARwin 6.0 was used to analysis of the data. The results of this research showed that genetic moleculer varians based on SSR markers was 41.68%

Pertumbuhan Okulasi Tanaman Karet (Hevea Brassiliensis Muell Arg.) Dengan Tinggi Penyerongan Batang Bawah Dan Benzilaminopurine (Bap) Pada Pembibitan Polibeg

Pertumbuhan tanaman karet pada pembibitan ditentukan oleh beberapa faktor. Salah satu faktor penentu adalah pada fase penyerongan. Setelah tahapan penyerongan tingginya kematian tanaman cukup tinggi pada okulasi bibit muda. Penelitian ini menggunakan Rancangan Acak Kelompok (RAK) Faktorial dengan dua faktor dan tiga ulangan. Penyerongan batang bawah (10, 20 dan 30 cm) dan konsentrasi BAP (15, 30, 45 dan 60 mg / 200 g Lanolin). Hasil penelitian jumlah okulasi hidup berpengaruh nyata terhadap interaksi perlakuan penyerongan dan BAP. Hasil penelitian menunjukkan bahwa penyerongan batang bawah 30 cm dan pemberian BAP 60 g / 200 g Lanolin adalah perlakuan terbaik untuk tinggi tunas (410,67 mm) dan persentase okulasi hidup (66,67%)

Respon Salinitas Terhadap Pertumbuhan Dan Komposisi Rantai Panjang Polyisoprenoid Semai Mangrove Avicennia Officinalis

Effect of salinity on the growth and composition of long chain polyisoprenoid in A. officinalis was studied in the greenhouse, Faculty of Agricultural and forest ecology laboratory, University Sumatera Utara. Research was started from July to December 2014. A. officinalis seedlings were used with five levels of salinity namely 0%; 0.5%; 1.5%; 2% and 3% and grown for 3 months. The optimum result was mostly obtained at a rate of 0% salinity, height growth of seedling was at 2% salinity, diameter growth of seedlings was in salinity 0%, the number of leaves was at 0% salinity, leaves area was at 0% salinity, wet weight and dry of leaves, roots and stems were at 0% salinity respectively. On the other hand, ratio of shoots to roots was at 0% salinity. One-dimensional plate thin-layer chromatography (1D-TLC) analysis of the three months of A. officinalis could not find the dolichol content