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Geng Z.-L.,Guizhou Academy of Tobacco Science Research | Zhang J.,Guizhou Academy of Tobacco Science Research | Ge Y.-H.,Guizhou Academy of Tobacco Science Research | Xiang Z.-M.,Guizhou Academy of Tobacco Science Research | And 4 more authors.
Chinese Journal of Applied Ecology | Year: 2015

Correlation analysis between main chemical constituents of tobacco leaves and endogenous harmful components in mainstream cigarette smoke was conducted. Leaf stalk positions exhibited a high relation with endogenous harmful components and hazard index (H). Upper stalk position leaves had greater release of 1-butanone,4-(methylnitrosoamino)-1-(3-pyridinyl)- (NNK), B[a]P, HCN, NH3 and phenol in mainstream cigarette smoke, and a higher hazard index than middle position leaves except for crotonaldehyde, which had greater release from middle position leaves. Different endogenous harmful components in mainstream cigarette smoke presented complicated correlation with main chemical constituents in tobacco. The same type of leaf chemical constituents presented different correlations with various endogenous harmful components in mainstream cigarette smoke. Cigarette hazard index showed significantly positive correlations with contents of nicotine, protein, total nitrogen, major polyphenols and organic acids, while significantly negative correlation with potassium and carbonaceous substances, such as total sugars, reducing sugars and starch. The results suggested that properly increasing potassium content and decreasing nitrogenous constituents in cured tobacco leaf may reduce the cigarette hazard index. ©, 2015, Editorial Board of Chinese Journal of Applied Ecology. All right reserved.

PubMed | COMSATS Institute of Information Technology, Guizhou Provincial Tobacco Company and Zhejiang University
Type: Journal Article | Journal: Environmental toxicology and chemistry | Year: 2016

In the present study, the effects of lead (Pb) uptake and toxicity were investigated in a hydroponic culture using 7 tobacco (Nicotiana tabacum L.) genotypes (Bina 1 [B1], Kutsaga Mammoth 10 [KM10], Nanjing 3 [N3], Kutsaga 35 [K35], Kutsaga E1 [KE1], Cocker 176 [C176], and Kutsaga RK6 [KRK6]) that differed in Pb tolerance. Lead was applied as a solution of Pb nitrate at concentrations of 0M, 10M, 250M, and 500M. After 4 wk of Pb treatment, tissue biomass and photosynthetic parameters were measured and elemental analysis was performed. The results showed decreases in growth and photosynthetic parameters with increases in Pb concentration compared with the control. The least reduction in the recorded physiological parameters was noted in K35, whereas the greatest reduction was observed in N3, which is an obvious indication of genotypic differences. Activities of peroxidase, catalase, and malondialdehyde increased significantly with increases in Pb concentration, with genotypes K35 and N3 showing the least and the greatest reduction, respectively. The results demonstrate the phototoxic nature of Pb on plants, and it can be concluded that in Pb-prone areas genotypes K35 and B1 can be used for cultivation because they can grow efficiently in the presence of high Pb concentrations while restricting Pb uptake in the aboveground parts, as seen by the higher Pb tolerance index. Environ Toxicol Chem 2017;36:175-181. 2016 SETAC.

Chen W.-D.,Guizhou Provincial Tobacco Company | Li J.-X.,Guizhou Provincial Tobacco Company | Wang F.,Guizhou Provincial Tobacco Company
Acta Tabacaria Sinica | Year: 2013

Overcoming disadvantages, such as scattered production resources, poor physical geography condition, scarce facilities and equipment, and insufficient technique of tobacco grower, and creating conditions for intensive management, is crucial to the development of modern tobacco agriculture in mountainous areas. In view of that, Guizhou Provincial Tobacco Company innovated a pearl necklace model for development of modern tobacco agriculture in mountainous areas, taking small connecting lands as pearls and tractor-ploughing road as chain for planting distribution. Similarly, taking group facilities as pearls and generalized preferential service as chain for equipment configuration, and taking household operation as pearl and unified service as chain for production organization, and likewise classified innovation as pearl and standard enforcement as chain for technique application, one station and four lines as pearl and information management as chain for basic management, tobacco management as pearl and support through subsidies as chain for district development. The model takes consideration of both pursuit of scale efficiency and actual practice to create an efficient path of modern tobacco agriculture development in mountainous areas.

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