The Analysis Of Several Species Resistance And The Feeding Habits Of Apriona Germari Hope

Taken the one-to-two-year shoots of four species as the trial material, the experiment was conducted on the indoor rearing of Apriona germari adults and the analysis of the influence of various species inclusions on the capacity of eating and amount of oviposition of Apriona germari adults. The results showed that the adults ate more shoot barks of Broussonetia papyrifera than those of other species both in sole rearing and various rearing, which proved that Apriona germari took Broussonetia papyrifera as its replenishing nutrition tree, and that eliminating Mulberry family trees like Broussonetia papyrifera was an effective way to lessen the insect pests of Populus tomentosa. The analysis of inclusions showed that the reducing sugar, total sugar, protein, and total phenol had no direct relation to the feeding of Apriona germari adults. While the soluble sugar of the bark was higher, the adults liked eating the bark, living longer, and the female adults laid more ova, on the contrary, the adults didn't eat or seldom ate the bark, accordingly, the adults lived shorter, and the female adults laid few ova. It was the same as the content of amino acid, tannin and total phenol in the bark, especially that of the indispensable amino acid. The results offered some theoretical basis for selecting resistant, good species.