Chemical composition of tobacco seeds (Nicotiana tabacum L.)

1991 ◽  
Vol 68 (1) ◽  
pp. 29-33 ◽  
Author(s):  
N. Frega ◽  
F. Bocci ◽  
L. S. Conte ◽  
F. Testa
Keyword(s):  
Chemical Composition ◽  
Nicotiana Tabacum ◽  
Nicotiana Tabacum L ◽  
Tobacco Seeds

scholarly journals PENGARUH PERENDAMAN TERHADAP VIABILITAS BENIH TEMBAKAU (Nicotiana tabacum L.)

2020 ◽  
Vol 20 (2) ◽  
pp. 87
Author(s):  
SIWI SUMARTINI ◽  
SRI MULYANI ◽  
FATHKUR ROCHMAN
Keyword(s):  
Nicotiana Tabacum ◽  
Root Length ◽  
Seed Viability ◽  
Germination Percentage ◽  
Test Method ◽  
Seedling Vigor ◽  
Tobacco Seed ◽  
Vigor Index ◽  
Nicotiana Tabacum L ◽  
Tobacco Seeds

<p>ABSTRAK<br />Permasalahan dalam pengembangan tembakau rakyat adalah daya<br />berkecambah benih yang rendah. Penelitian ini bertujuan untuk<br />mengetahui pengaruh perendaman benih terhadap daya berkecambah<br />benih tembakau (Nicotiana tabacum L.). Penelitian dilaksanakan di<br />laboratorium Balai Penelitian Tanaman Pemanis dan Serat pada bulan Mei<br />sampai dengan Juli 2013. Perlakuan disusun dalam rancangan petak<br />terbagi dan diulang empat kali. Sebagai petak utama adalah tujuh varietas<br />tembakau lokal, yaitu V1 = Kemloko1; V2 = Kemloko2; V3 = Kemloko3;<br />V4 = Kasturi1; V5 = Kasturi2; V6 = Grompol Jatim1; dan V7 =<br />Bojonegoro1. Sebagai anak petak adalah: R1 = Tanpa perendaman<br />(kontrol); R2 = perendaman selama satu jam dalam air; R3 = perendaman<br />selama satu jam dalam larutan KNO 3  (0,1%), dan R4 = perendaman<br />selama satu jam dalam larutan KNO 3 (0,2%). Setelah perlakuan<br />perendaman, benih tembakau dikecambahkan menggunakan metode Uji di<br />Atas Kertas. Pada setiap ulangan, sebanyak 100 benih tembakau<br />dikecambahkan pada media kertas merang yang diletakkan di dalam<br />petridish berdiameter 9 cm. Perkecambahan dilakukan di dalam<br />germinator tipe IPB dengan suhu 23 o C dan kelembaban nisbi 87-93%.<br />Parameter yang diamati adalah daya berkecambah, panjang kecambah,<br />panjang akar kecambah, dan indeks vigor kecambah. Perendaman benih<br />tembakau menggunakan air, larutan KNO 3 0,1% dan larutan KNO 3 0,2%<br />selama satu jam sebelum benih disemaikan, dapat meningkatkan daya<br />berkecambah dan panjang kecambah varietas Kemloko1 dan Grompol<br />Jatim1. Perlakuan perendaman benih dengan air berpengaruh positif pada<br />varietas Kemloko1 yang ditunjukkan dengan daya berkecambah tertinggi,<br />sedangkan perendaman dengan larutan KNO 3 0,2% berpengaruh negatif<br />pada varietas Bojonegoro1 yang ditunjukkan dengan daya berkecambah<br />paling rendah. Perlakuan perendaman dengan air maupun larutan KNO 3<br />(0,1% dan 0,2%) menunjukkan pengaruh yang berbeda-beda terhadap<br />parameter daya berkecambah, panjang kecambah, panjang akar kecambah,<br />dan indeks vigor kecambah pada semua varietas tembakau yang diuji.<br />Kata kunci: Nicotiana tabacum L., perendaman, KNO 3 , viabilitas benih</p><p>ABSTRACT<br />Low germinability of seeds is one of major problems in tobacco<br />development. The aim of this study was to determine the effect of priming<br />on tobacco (Nicotiana tabacum L.) seed viability. The research was<br />conducted in the laboratory of the Indonesian Sweeteners and Fiber Crops<br />Research Institute during May to July 2013. The treatments were arranged<br />in a split plot design with four times of replication. The main plots were<br />seven tobacco varieties namely V1 = Kemloko1; V2 = Kemloko2; V3 =<br />Kemloko3; V4 = Kasturi1; V5 = Kasturi2; V6 = Grompol Jatim1; and V7<br />= Bojonegoro1. The subplots were priming seeds for one hour namely R1<br />= without priming (control); R2 = priming for one hour on water; R3 =<br />priming for one hour on KNO 3  (0,1%) solution, and R4 = priming for one<br />hour on KNO 3 (0,2%) solution. After priming, seeds were germinated using<br />the Upper Paper Test method. A hundred of seeds were sown on straw<br />paper media in a petridish diameter 9 cm of each replication. Parameters<br />measured were germination percentage, shoot and root length, and<br />seedling vigor index. Priming tobacco seed with water or KNO 3  (0.1 and<br />0.2%) solution for one hour before seeds were germinated significantly<br />improved germination percentage and shoot length of Kemloko1 and<br />Grompol Jatim1 varieties. Priming tobacco seed with water had positive<br />effect on Kemloko1 variety which resulted the highest germination<br />percentage but had adversely effect on Bojonegoro1 variety which resulted<br />the lowest germination percentage. Priming tobacco seeds with water or<br />KNO 3 (0.1 and 0.2%) solution resulted different effect on germination<br />percentage, shoot and root length, and seedling vigor index parameters for<br />all tobacco varieties were observed.<br />Key words: Nicotiana tabacum L., priming, KNO 3 , seed viability</p>

CHEMICAL COMPOSITION OF FLUE-CURED TOBACCO CULTIVARS WITH DIFFERENT SENSITIVITIES TO WEATHER FLECK

1983 ◽  
Vol 63 (1) ◽  
pp. 293-297
Author(s):  
WILLIAM A. COURT ◽  
JOHN G. HENDEL
Keyword(s):  
Fatty Acids ◽  
Air Pollution ◽  
Chemical Composition ◽  
Nicotiana Tabacum ◽  
Organic Acids ◽  
Nicotiana Tabacum L ◽  
Surface Wax ◽  
Phenolic Constituents ◽  
Surface Waxes

Experiments were conducted in 1976, 1977 and 1978 to examine the chemical composition of four flue-cured tobacco cultivars (Nicotiana tabacum L.) with a range of weather fleck tolerances. Weather fleck is associated with the air pollution injury to plants. The amount of surface wax was positively related to the weather fleck tolerance. Individual phenolic constituents, nonvolatile organic acids and fatty acids were not related to weather fleck tolerance in the tobacco cultivars used in the study.Key words: Weather fleck, flue-cured tobacco, surface waxes, phenolic constituents, organic and fatty acids

Tobacco Chemistry/Chemische Zusammensetzung des Tabaks

1976 ◽  
Vol 8 (6) ◽  
Author(s):  
Arne J. Aasen ◽  
Sven-Olof Almquist ◽  
Curt R. Enzell
Keyword(s):  
Nicotiana Tabacum ◽  
Nicotiana Tabacum L

Abstract35: two isomeric 5,6-Epoxy-3-hydroxy-7-megastigmen-9-ones from Nicotiana tabacum L.

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