Study On The Influence Of Trichome Secretion To Fragrance Substance In Flue-Cured Tobacco And The Impact Of Water Regulation

The relation of leaf trichome and trichome secretion is extremely close with leaf fragrant makings and fragrant spirit formation in tobacco. Usually, trichome density is big, the growth condition is good and the trichome secretion quantity is big that leaf fragrance is full-bodied and satiation. Studies on the trichome growth, mature, languish and the rule that leaf surface tirchomes excrete the fragrant ingredients of different flue-cured tobacco breeds in the growth process, which will have the important guiding sense to new tobacco breeds selection and implementation of high quality cultivable technology; As well as researching influence of the different environmental factor to the trichome density on tobacco leaves surface and the secretion content and composition proportion, which expect to provide the theoretically support to regulate ability of trichome secretion and help to finding a kind of technology to enhance the ability.This article takes the field cultivation flue-cured tobacco and the sun-cured tobacco as materials in the year of 2004 and 2005. Conducted a series of analyse and research by used the modern analytic technology. Observed live leaf and counting the trichome density with the microscope and used GC, GC/MS to analyze the content and component of medium fragrance substances in flue-cured tobacco. Main findings are follows:1. We tracked the trichome density observation in different breeds of flue-cured tobacco at different mature process to discover follows: Trichome density of different tobacco breeds existence is remarkable or the extremely remarkable difference, long handle trichome, short handle trichome and headless trichome ratio also has big difference, trichome density on the lower epidermis is lower than the upper epidermis; The different types trichome of different flue-cured tobacco breeds languishing speed is different along with the leaf mature periods.2. Qualitative analysis of leaf secretion was made by GC/MS, and content analysis was also accurate made by GC. Result demonstrates follows: The content of cembrenoids are highest in the leaf surface secretion components of flue-cured...