The Physiolog ica lMetabolism Reaction of H a loxylonPara tized by C istanche dese rticola

By selecting an experiment p lot from the fine forest experiment station in J imusaer County of XinjiangUygurAutonomous Region, where the site conditions, way of inoculation Cistanche deserticola age of host sap ling,p lanting sap ling density were well selected all analogous in the fine tree seeds base of Cistanche deserticola, the authors studied the relative water content(RWC), bound water / free water, chlorophyll, p raline andMDA contents ofHaloxylon’s photosynthetic shootswhich include parasitized by Cistanche deserticola, unparasitized by Cistanche deserticola and parasitized by Cistanche deserticola in the past but unparasitized now. The results showed that the RWCof Haloxy lon’s photosynthetic shoots parasitized by Cistanche deserticola decreased and the contents of bound water/free water increased, comparingwith the others. Meanwhile, the chlorophyll contents of Haloxy lon’s photosyntheticshoots parasitized by Cistanche deserticola decreased, the p raline andMDA contents increased. The discrimination ofthese indicts was significant between them. The Haloxy lon physiological metabolism reactions arosed by Cistanche deserticola parasitized was a type of physiologicalmetabolism adap tation and also was a main reason of Haloxy lon declining growth arosed by inoculation Cistanche deserticola.