Reynolds Technologies, Inc.

Other

Jerry Wayne Lawson

Michael Francis Dube

Luis Mayan Dominguez

Wennuan Liu

William Monroe Coleman, Iii

Ronald Lewis Parks

William Samuel Simmons

The present invention provides a method for producing plants with a desired phenotypic trait which comprises subjecting plants to mutagenesis, screening chimeric progeny for plants having the desired phenotypic trait, and propagating the survivors. In an embodiment, the phenotypic trait comprises an altered amino acid content. Preferably, the technique is used to generateplant lines having an increase in at least one amino acid. In a preferred embodiment, the invention provides improvedplant lines producing at least 1.35 nmole of threonine per milligram of dry plant weight. These plants are useful for improving the flavor and aroma of the tobacco.

Tobacco having modified nicotiana tobacum

Tobacco having increased threonine

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The flavor and aroma characteristics of the smoke of a tobacco blend incorporating Oriental tobacco are improved by subjecting that blend to heat treatment. Oriental tobacco having a relatively high sucrose ester content is combined with a second dissimilar Oriental tobacco material and/or a non-Oriental tobacco material to form a tobacco mixture, and that mixture is heated for a time and under conditions sufficient to reduce the concentration of sucrose esters in the Oriental tobacco. Tobacco blends having reduced levels of sucrose esters yield smoke that does not possess undesirable off-notes provided by pyrolysis products of those sucrose esters; namely, 2-methylpropionic acid, 3-methylbutyric acid and 3-methylpentanoic acid.

Method of reducing the sucrose ester concentration of a tobacco mixture

The present invention provides a method for producing plants with a desired phenotypic trait which comprises subjecting plants to mutagenesis, screening chimeric progeny for plants having the desired phenotypic trait, and propagating the survivors. In an embodiment, the phenotypic trait comprises an altered amino acid content. Preferably, the technique is used to generate plant lines having an increase in at least one amino acid. In a preferred embodiment, the invention provides improved plant lines producing at least 1.35 nmole of threonine per milligram of dry plant weight. These plants are useful for improving the flavor and aroma of the tobacco.

High threonine producing lines of Nicotiana tobacum and methods for producing

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Pfafftown, NC, United States of America

Jerry Wayne Lawson