Evaluation of Insect Responses of Different Rhododendron Species to Stephanitis pyriodes Scott Stress
Rhododendron germplasm was used as the experimental material.Under natural conditions,employing correlation analysis,systematic cluster analysis,and principal component analysis,the variations in insect resistance among different Rhododendron to Stephanitis pyriodes Scott were comprehensively assessed,in order to provide reference for breeding insect-resistant Rhododendron germplasms.The results showed that a negative correlation among insect resistance pest index,leaf damage rate,insect quantity,and chlorophyll changes.Conversely,positive correlations were observed with the thickness of palisade tissue,the ratio of palisade tissue to spongy tissue,as well as the content of soluble sugar and soluble protein.Based on the comprehensive evaluation data,the tested materials were categorized into five groups,Rhododendron simsii,Rhododendron'Xiquedengzhi',and Rhododendron'Liuqiuhong'were designated as high resistance types.Rhododendron'Xiaoqinglian',Rhododendron'Lanhuayu',Rhododendron'Zi'e',Rhododendron'Yangguifei',and Rhododendron'Kangnaixin'were designated as medium resistance types.Rhododendron'Mingzhao',Rhododendron'Zihudie',Rhododendron'Wangfei',Rhododendron'Hongyingtao',Rhododendron'Shalang',Rhododendron'Fangchou',Rhododendron'Lishanzhiwu',Rhododendron'Yudaizhirong',and Rhododendron'Tianzhang'were designated as low resistance types.Rhododendron'Baiying',Rhododendron'Hongpingguo',Rhododendron'Fengbaidaye',and Rhododendron'Aierxili'were designated as low susceptibility types.Rhododendron'Hongzhengzhu',Rhododendron'Fengguan',Rhododendron'Fenhongpaopao'Rhododendron'Yanzhimi'and Rhododendron'Wanxia',were designated as high susceptibility types.
RhododendronStephanitis pyriodes Scottinsect resistancephysiological character
万方数据
维普
