Rubber latex yield and physiology of rubber tree with tea tree oil treatments
2012
To examine the effects of tea tree oil on rubber latex yield and the resulting latex physiological parameters of rubber tree (Hevea brasiliensis),clean water and 20%,40%,60%,80% and 100% of tea tree oil were applied on the tapping cut of rubber trees. The data were analyzed by Duncan test and its results showed that when compared to clean water (ck),80% and 100% of tea tree oil stimulation significantly promoted rubber latex yield(P<0.05). In addition,the latex physiological parameters changed with the sucrose content(P<0.01),magnesium ion content (P<0.01) and inorganic phosphorus content (P<0.01) of latex significantly increasing and thiol content significantly deceasing (P<0.01). The effect of tea tree oil treatments on rubber yield was similar to the impact of 0.5% ethrel stimulation. However,compared to ethrel stimulation,100% tea tree oil treatment significantly increased dry rubber and sucrose contents (P<0.01) and decreased thiol content (P<0.01). Thus,tea tree oil treatment involved different latex yield promotion mechanisms than that of ethrel stimulation.
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