INHERITANCE OF A SHORT-INTERNODE TRAIT IN TOBACCO

1982 ◽  
Vol 24 (6) ◽  
pp. 653-659
Author(s):  
Paul D. Legg ◽  
G. B. Collins
Keyword(s):  
Nicotiana Tabacum ◽  
Plant Height ◽  
Mutant Line ◽  
Chemical Components ◽  
Maternal Parent ◽  
Short Internode ◽  
Burley Tobacco ◽  
Nicotiana Tabacum L

A short-internode mutation in burley tobacco (Nicotiana tabacum L.) was inherited as a monogenic trait. Heterozygous plants varied in phenotype from comparable to the short-internode mutant to intermediate between mutant and normal plants. In generations following crosses between the mutant line and three burley cultivars, the degree of expression of dominance varied by years, maternal parent, cultivar background, and percentage of germplasm from the mutant parent. The short-internode line was reduced in plant height and had narrower leaves than the three cultivars. Also, the mutant line had more leaves than two of the three cultivars and was comparable to the cultivars in yield and several chemical components. Short-internode cultivars could be developed for use in present production or in mechanized handling systems.

ACCUMULATION OF NITRATE AND CHLORIDE BY BURLEY TOBACCO

1974 ◽  
Vol 54 (1) ◽  
pp. 167-174 ◽  
Author(s):  
B. D. FUQUA ◽  
J. E. LEGGETT ◽  
J. L. SIMS
Keyword(s):  
Nicotiana Tabacum ◽  
The Other ◽  
Field Conditions ◽  
Leaf Cell ◽  
Plant Composition ◽  
Tobacco Plants ◽  
Burley Tobacco ◽  
Linear Relationships ◽  
Nicotiana Tabacum L ◽  
Root Media

Experiments were conducted to study the NO3− and Cl− interactions during uptake by burley tobacco (Nicotiana tabacum L., cult Ky 14) and the effects of their interactions on plant composition over long growth periods. Results indicated that NO3− or Cl− inhibited the absorption of the other anion by burley tobacco plants but did not influence the composition of cations. Positive linear relationships were found between NO3− and Cl− levels in solution, and the NO3− and Cl− contents in the plants in the laboratory and greenhouse studies. The inhibition of NO3− by Cl− during accumulation was also evident for tobacco plants grown under field conditions for longer periods. The interaction between NO3− and Cl− appears to be competitive during accumulation by burley tobacco. Competition between NO3− and Cl− during accumulation is proposed to be localized in the leaf cell rather than at the root–media interface.

INHERITANCE OF PER CENT TOTAL ALKALOIDS IN NICOTIANA TABACUM L. II. GENETIC EFFECTS OF TWO LOCI IN BURLEY 21 × LA BURLEY 21 POPULATIONS

1971 ◽  
Vol 13 (2) ◽  
pp. 287-291 ◽  
Author(s):  
Paul D. Legg ◽  
G. B. Collins
Keyword(s):  
Nicotiana Tabacum ◽  
Dominance Effect ◽  
Epistatic Effect ◽  
Genetic Effects ◽  
Burley Tobacco ◽  
Relative Contribution ◽  
Total Alkaloids ◽  
Dosage Effects ◽  
Nicotiana Tabacum L ◽  
Locus System

The genetic effects and the relative contribution of two loci to the level of total alkaloids in burley tobacco (Nicotiana tabacum L.) were determined. The nine genotypes for a two-locus system were developed and evaluated in two environments. Significant additive effects were found at both loci, a dominance effect was significant at one locus, and the additive × additive epistatic effect was significant. All interactions between genetic effects and environments were nonsignificant. The relative dosage effects of the loci were approximately 2.4 to 1.

scholarly journals Identification of donor lines containing favorable alleles for quantitative traits in Burley tobacco (Nicotiana tabacum L.)

Genetika ◽  
2010 ◽  
Vol 42 (2) ◽  
pp. 287-297
Author(s):  
Slobodan Drazic ◽  
Slaven Prodanovic ◽  
Tomislav Zivanovic
Keyword(s):  
Nicotiana Tabacum ◽  
Leaf Area ◽  
Quantitative Traits ◽  
Total Leaf Area ◽  
Favorable Alleles ◽  
Burley Tobacco ◽  
Total Leaf ◽  
Nicotiana Tabacum L ◽  
Leaf Yield ◽  
Number Of Leaves

Well-adapted local lines might be used as donors to improve existing commercial hybrids. The objective of this study was to identify the best burley tobacco (Nicotiana tabacum L.) line among a group of four lines (SA 130, Bols 334, Barlej T and TN 90) from germplasm collection, for improving an elite single hybrid Bols 335 x TN 86. Values of three quantitative traits (number of leaves, total leaf area and leaf yield) were measured in two-year field experiments. Evaluation of donor lines as sources of new favorable alleles not present in the elite hybrid parent lines was conducted. According to Dudley (1984, 1987) the most significant class for improving quantitative traits is locus class G. Donor line TN 90 had positive values of the parameter ?G for number of leaves and for total leaf area. Studied donor lines could not be use directly as the source of new alleles for the improvement of leaf yield in elite hybrid. The improvement of leaf yield in tobacco hybrid Bols 335 x TN 86 would be conducted indirectly via back crossing (TN 86 x TN 90) x TN 86. Significance of GxE interaction for studied traits indicates the same breeding method would be effective in broad range of environmental conditions.

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