Effect of different iron-, potassium-, phosphate-, and calcium-manganese relationships on the growth and chemical composition of aromatic strain of bidi tobacco (Nicotiana tabacum L.)

1969 ◽  
Vol 30 (2) ◽  
pp. 305-316 ◽  
Author(s):  
B. V. Mehta ◽  
N. K. Patel
Keyword(s):  
Chemical Composition ◽  
Nicotiana Tabacum ◽  
Potassium Phosphate ◽  
Nicotiana Tabacum L ◽  
Bidi Tobacco

scholarly journals Purification and general properties of δ-aminolaevulate dehydratase from Nicotiana tabacum L.

1969 ◽  
Vol 114 (2) ◽  
pp. 331-337 ◽  
Author(s):  
A. S. Shetty ◽  
G. W. Miller
Keyword(s):  
Activation Energy ◽  
Nicotiana Tabacum ◽  
Phosphate Buffer ◽  
Potassium Phosphate ◽  
Optimum Temperature ◽  
Thiol Groups ◽  
Potassium Phosphate Buffer ◽  
Tobacco Leaves ◽  
General Properties ◽  
Nicotiana Tabacum L

1. δ-Aminolaevulate dehydratase (EC 4.2.1.24) was purified 80-fold from tobacco leaves and its properties were studied. 2. The enzyme had optimum pH7·4 in potassium phosphate buffer, Km6·25×10−4m at 37° and pH7·4, optimum temperature 45° and an activation energy of 11100 cal./mole. 3. The enzyme lost activity when prepared in the absence of cysteine, and this activity was only partly restored by the later addition of thiols. Reagents for thiol groups inactivated the enzyme. 4. Mg2+ was essential for activity, and EDTA and Fe2+ were inhibitory; Mn2+ was an activator or an inhibitor depending on the concentration.

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

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

scholarly journals Effect of nitrogen and topping on performance of bidi tobacco (Nicotiana tabacum L.) varieties under rainfed conditions

2020 ◽  
pp. 415-419
Author(s):  
S. JAFFAR BASHA
Keyword(s):  
Nicotiana Tabacum ◽  
Interactive Effect ◽  
Leaf Length ◽  
Leaf Width ◽  
Research Station ◽  
Leaf Stage ◽  
Net Returns ◽  
Nicotiana Tabacum L ◽  
Leaf Yield ◽  
Bidi Tobacco

A field experiment was undertaken at Regional Agriculture Research Station, Nandyal, Andhra Pradesh for two consecutive years viz., 2018-19 and 2019-20 on Vertisols under rainfed condition to study the effect of different levels of nitrogen and topping on performance of bidi tobacco (Nicotiana tabacum L.) varieties. The treatments consisted of two varieties as main plots, three nitrogen levels as sub plots and three topping levels as sub sub plots in split split plot design and replicated thrice. The data pooled over two seasons revealed that significantly higher leaf length (47.6 cm), leaf width (21.3 cm) and cured leaf yield (2217 kg ha-1) were recorded with variety ABD 132 over other variety Nandyal Pogaku 1. Application of 140 kg N ha-1 recorded higher leaf length (47.7 cm), leaf width (20.9 cm) and cured leaf yield (2110 kg ha-1). The topping at 15 leaf stage recoded higher cured leaf yield (2147 kg ha-1) over other topping stages. Higher net returns (Rs 105544 ha-1) with BCR of 2.72 were recorded with ABD 132 over Nandyal Pogaku 1. Application of 110 kg N ha-1 recorded higher BCR of 2.55 whereas topping at 15 leaf stage recorded higher net returns (Rs 100275 ha-1) with BCR of 2.64. ABD 132 recorded higher nicotine (5.94%), lower reducing sugars (2.25%) and higher chlorides (1.61%) when compared to Nandyal Pogaku 1 (5.71%, 2.97% and 1.23% respectively). The levels of nitrogen and topping had non-significant effect on leaf chemical constituents. The interactive effect among various treatments had significantly beneficial effect on cured leaf yield of bidi tobacco and maximum cured leaf yield was obtained with ABD 132 with 140 kg N ha-1and topping at 15 leaf stage.

scholarly journals Management of phosphorus and potassium in bidi tobacco (Nicotiana tabacum L.) under rainfed conditions

2020 ◽  
pp. 420-424
Author(s):  
S. JAFFAR BASHA
Keyword(s):  
Nicotiana Tabacum ◽  
Soil Analysis ◽  
Block Design ◽  
Research Station ◽  
Available N ◽  
Net Returns ◽  
Nicotiana Tabacum L ◽  
Leaf Yield ◽  
Phosphorus And Potassium ◽  
Bidi Tobacco

A field experiment was undertaken at Regional Agriculture Research Station, Nandyal, Andhra Pradesh for four consecutive seasons from 2015-16 to 2018-19 on Vertisols under rainfed condition to find out the economics and management of phosphorus and potassium in bidi tobacco (Nicotiana tabacum L.) for higher cured leaf yield and quality. The experiment was laid out in a randomized block design with 8 treatments and replicated thrice. The data pooled over four seasons revealed that significantly higher leaf length (42.8 cm) and leaf width (17.3 cm) was recorded with 100% RDF (110 kg N + 70 kg P2O5+ 50 kg K2O ha-1) every year. Significantly higher cured leaf yield (1551 kg ha-1) and net returns (Rs 63,375 ha-1) were recorded with application of 110 kg N + 70 kg P2O5+ 50 kg K2O ha-1every year and on par with 100% RDN (110 kg N ha-1) +PK (70 kg P2O5+ 50 kg K2O ha-1) once in two years (1408 kg ha-1and net returns of Rs 59,275 ha-1). Leaf chemical constituents namely nicotine, reducing sugars and chlorides did not differ significantly due to different treatments and were in permissible limit. Post harvest soil analysis indicated that soil available N, P2O5 and K2O differed significantly due to different treatments and maximum amounts of available N (158.9 kg ha-1), available P2O5 (56.3 kg ha-1) and available K2O (537.3 kg ha-1) were recorded under treatment T5, T3 and T5, respectively. Soil pH and EC values were not affected significantly with the various treatments.

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