CAJ | 학술논문

杨树不同品系对杨干象抗性差异很大,以美洲黑杨为亲本的多数外来品种对杨干象抗性差,也使杨干象种群迅速扩大。该文根据调查的3年生和4年生连续2 a的不同杨树品系的平均虫口密度,根据聚类分析的方法将其划分为高感虫品系、感虫品系、低抗虫品系、中抗虫品系和高抗虫品系5个级别,结合杨树品系的类型、形态特征等进行分析,为生产上选用杨树抗性品系和减少杨干象大发生的危害及抗虫育种等方面提供参考。
양수불동품계대양간상항성차이흔대,이미주흑양위친본적다수외래품충대양간상항성차,야사양간상충군신속확대。해문근거조사적3년생화4년생련속2 a적불동양수품계적평균충구밀도,근거취류분석적방법장기화분위고감충품계、감충품계、저항충품계、중항충품계화고항충품계5개급별,결합양수품계적류형、형태특정등진행분석,위생산상선용양수항성품계화감소양간상대발생적위해급항충육충등방면제공삼고。
As it has marked difference on resisting Crptorrhynchus lapathi in different poplar swains. Pest density of different poplar strains with three or four yeas old was investigated. All poplar swains were divided to five grades by using method of cluster analysis. Based on our investigative data, type and morphological character of poplar strain, poplar resistant strains were elected and applied.