Resistance of Three Varieties Juglans sigillata to Batocera lineolata
To screen out walnut varieties with excellent resistance to the Batocera lineolata.Find out the main chemicals that affect walnut insect resistance.Inoculate adults B.lineolata on the walnut Xixiang;Longjia and Niangqing seedlings.Compare the feeding area of different walnut varieties and measure the differences in nutrients,secondary metabolites,protective enzymes and protease inhibitors activities of bark of the three wal-nut varieties before and after affected.The result shows that the bark of Niangqing walnuts was the least affected by adult B.lineolata,which was 0.000 7 m2,the main nutrients and secondary metabolites affecting insect re-sistance of walnut bark were soluble protein and total phenols.The main protective enzymes and protease inhibi-tors affecting the insect resistance of walnut are superoxide dismutase and chymostatin in-hibitor,among which the comprehensive score of insect resistance of the bark of Niangqing walnut is the highest.In conclusion,Nian-gqing walnut had the strongest insect resistance.Soluble proteins,total phenols,superoxide dismutase and chy-motrypsin inhibitors are the main substances affecting the insect resistance of walnut bark.The result laid the foundation for the breeding of new walnut varieties and the study of plant resistance mechanism.
NETL
NSTL
万方数据
