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Influence of chlorophyll content on smoke constituents in burley and flue cured tobacco nicotiana tabacum



Influence of chlorophyll content on smoke constituents in burley and flue cured tobacco nicotiana tabacum



Crop Science 21(5): 692-695



Cultivars of burley and flue-cured tobacco (N. tabacum L.) differ in chlorophyll content of growing plants und in many chemical components. The present research was undertaken to determine the genetic diversity between burley and flue-cured tobacco for smoke components and the influence of chlorophyll level of the components. A backcrossing program was used to obtain near isogenic lines for all genetic factors except alleles at the 2 loci controlling chlorophyll level. Comparisons among standard cultivars indicated that burley cultivars were generally higher in tar/puff and nicotine/cigarette puff and lower in number of puffs/cigarette than flue-cured cultivars. The chlorophyll content influenced the level of 9 of the 10 cigarette characteristics and accounted for the difference between burley and flue-cured cultivars for number of puffs/cigarette. Diversity between the 2 classes of cultivars for tar/puff and nicotine/puff was not totally due to chlorophyll differences. Interclass crosses might be useful in breeding improved cultivars for these components.

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Accession: 005681946

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