The present disclosure provides tobacco inbred plants TN90 SRC, CMS TN90 SRC, KY14 SRC, CMS KY14 SRC, L8 SRC, NC775 SRC, CMS NC775 SRC, NC645 SRC, NC638 SRC, CMS NC638 SRC, TN86 SRC, and CMS TN86 SRC, and hybrids KY14 X L8 SRC, NC7 SRC, and NCBH129 SRC. The present disclosure also provides parts of such plants and products made from those parts. The present disclosure also includes progeny of the provided plants including hybrids.

Two genes, A622 and NBB1, can be influenced to achieve a decrease of nicotinic alkaloid levels in plants. In particular, suppression of one or both of A622 and NBB1 may be used to decrease nicotine in tobacco plants.

Smoking articles are disclosed herein. The present disclosure is directed to a smoking article that comprises a heat source configured to generate heat upon ignition thereof, a substrate material having opposed first and second ends, the heat source being disposed proximate the first end of the substrate material and the substrate material having an aerosol precursor composition associated therewith, a mouthpiece, the mouthpiece being disposed proximate the second end of the substrate material, and a heat transfer component. In one implementation, the heat transfer component comprises a hollow structure and opposing first and second flanges located on respective ends thereof, wherein the hollow structure extends through the heat source such that the heat source is located between the first and second opposing flanges. In another implementation, the heat transfer component is located within the heat source, penetrates at least a portion of the substrate material, and includes a cap located between the heat source and the substrate material.

Smoking articles are disclosed herein. The present disclosure is directed to a smoking article that comprises a heat source configured to generate heat upon ignition thereof, a substrate material having opposed first and second ends, the heat source being disposed proximate the first end of the substrate material and the substrate material having an aerosol precursor composition associated therewith, a mouthpiece, the mouthpiece being disposed proximate the second end of the substrate material, and a heat transfer component. In one implementation, the heat transfer component comprises a hollow structure and opposing first and second flanges located on respective ends thereof, wherein the hollow structure extends through the heat source such that the heat source is located between the first and second opposing flanges. In another implementation, the heat transfer component is located within the heat source, penetrates at least a portion of the substrate material, and includes a cap located between the heat source and the substrate material.

The invention provides a slow-release fragrance and an application thereof in a tobacco product with Chinese-style flavor. The slow-release fragrance of the invention includes the following constituents in percentage by mass: 5% to 50% of a tobacco extract and 50% to 95% of a tangerine peel extract.

The invention provides a slow-release fragrance and an application thereof in a tobacco product with Chinese-style flavor. The slow-release fragrance of the invention includes the following constituents in percentage by mass: 5% to 50% of a tobacco extract and 50% to 95% of a tangerine peel extract.

Four genes, A622, NBB1, PMT, and QPT, can be influenced for increasing nicotinic alkaloid levels in Nicotiana plants, as well as for synthesizing nicotinic alkaloids in non-nicotine producing plants and cells. In particular, overexpressing one or more of A622, NBB1, PMT, and QPT may be used to increase nicotine and nicotinic alkaloid levels in tobacco plants. Non-nicotine producing cells can be engineered to produce nicotine and related compounds by overexpressing A622 and NBB1.

The invention features tobacco compositions and methods of their use and manufacture. Compositions of the invention may be based on a variety of technologies. Technologies include films, tabs, shaped parts, gels, consumable units, insoluble matrices, and hollow shapes. In addition to tobacco, compositions may also contain flavors, colors, and other additives as described herein. Compositions may also be orally disintegrable. Exemplary compositions and methods of their manufacture are described herein.

The invention features tobacco compositions and methods of their use and manufacture. Compositions of the invention may be based on a variety of technologies. Technologies include films, tabs, shaped parts, gels, consumable units, insoluble matrices, and hollow shapes. In addition to tobacco, compositions may also contain flavors, colors, and other additives as described herein. Compositions may also be orally disintegrable. Exemplary compositions and methods of their manufacture are described herein.

Two genes, A622 and NBB1, can be influenced to achieve a decrease of nicotinic alkaloid levels in plants. In particular, suppression of one or both of A622 and NBB1 may be used to decrease nicotine in tobacco plants.