To increase the filling power of tobacco,processes have been developed that consist of impregnating tobacco with volatile materials and thenrapidly removing them. The almost explosive removal of the impregnantexpands the cellular structure of the leaf,giv...[繼續(xù)閱讀]

    Nicotiana plant materials are used widely as models for tissue culture. In fact,early tissue culture work was conducted with interspecificNicotiana hybrids,N. glauca x N. langsdorffii. At the present time,tissue or cell cultures have served as valuable to...[繼續(xù)閱讀]

    Topping is a decapitation process in tobacco culture practiced by removing blossoms and sometimes the top leaves of a plant in order to stimulate growth and development of remaining leaves for desired quality. Topping prevents the development of the seed ...[繼續(xù)閱讀]

    Mainstream smoke combustionOver the past 20 years,researchers have evolved a good understanding of the phenomona occurring during puffing/combustion. Many experimental techniques ranging from thermodynamic calculations to use of isotopes have been employe...[繼續(xù)閱讀]

    A summary of the major chemical characteristics of the principal tobacco types is given in Table 4. 1. The descriptive words used are intended to give a relative ranking with regard to a property and are notmeant to represent an absolute level. For instan...[繼續(xù)閱讀]

    The objectives of flue - curing tobacco are to maintain and enhancethe potential quality embodied in the harvested leaf and to provide an environment conducive to the transformation of that leaf into a high qualitycured tobacco product. This is achieved t...[繼續(xù)閱讀]

    AbstractA convergence of findings indicates that smoking can relieve dysphoric mood and help individuals perform more effectively and cope withstress. For many individuals these beneficial effects of smoking appear tobe their primary reason for smoking. M...[繼續(xù)閱讀]

    The characteristics of cigarette smoke are functions of the physicaland chemical properties of the leaf tobacco that makes up the cigarette.Smoke constituents,therefore,may be modified by changing leaf characteristics. Production techniques have demonstra...[繼續(xù)閱讀]

    Topping,a common practice in tobacco production,is an operationof removing terminal inflorescence and sometimes several top leaves in order to redirect the energy for leaf development to a desired physical andchemical property. Subsequently,because of the...[繼續(xù)閱讀]

    Anther-derived haploids are potentially used in plant physiology andbreeding programs. One report employed anthers excised from immaturefloral buds that developed on tobacco plants in a greenhouse and in widelydiffering controlled enviroments. The anthers...[繼續(xù)閱讀]