Studies on the changes of trichome exudates of K 326 and Yunyan 87 varieties during the maturity

To learn law of dynamic formation of trichome exudates on the foliar during the maturity of flue-cured tobacco,the experiment selected K 326 and Yunyan 87 as test materials,of which trichome exudates were measured by gas chromatograph(GC-MS).The results showed that the main components of trichome exudates were alkaloids,cembrenoids and solanone,alkaloids formation amount was the biggest.Each material change trend on trichome exudates of two varieties were not identical during maturity of flue-cured tobacco.Solanone formation amount was bimodal curve,and alkaloids formation amount increased at first and then decreased.Cembrenoids formation amount on each part of two varieties didn't change in the same trend.Other materials formation amount decreased first,then increased and fell again.The total trichome exudates formation amount increased first then decreased.