棉花抗红铃虫材料筛选  

Screening for cotton materials resistant to pink boll worm

作　　者：吴征彬[1] 郭介华[1] 张金发[1] 冯纯大 

机构地区：[1]华中农业大学农学系

出　　处：《湖北农业科学》1997年第6期15-18,共4页Hubei Agricultural Sciences

基　　金："九五"国家科技攻关项目;湖北省重点科技计划

摘　　要：对３４份棉花材料的抗红铃虫性进行了鉴定，结果为：Ｂｔ棉原材料基本未受红铃虫为害，属免疫类型；抗虫级材料有４个；中抗级材料１６个；感虫级材料１１个；高感材料２个。用标准子害率（对照子害率与平均子害率之和的平均值），进行棉花抗性分级有可能提高结果的准确性、稳定性和重演性。Thirty four cotton lines were used to identify the resistance to pink boll worm (PBW). In these accessions, the Bt transgenic material was nearly immune to PBW, 4 were resistant to PBW, 16 were medium resistant, 11 were susceptible, 2 were highly susceptible. During the selection for cotton materials resistant to PBW, We derive a standard seed damage percentage(K) from the seed damage percentage of the control(X CK ) and that of the average of the whole experiment (X) according to the formulation K=(X CK +X)/2. The results would be more accurate and stable if using the standard seed damage percentage instead of using X CK or X respectively.

关 键 词：棉花 抗虫性 鉴定 标准子害率 棉红铃虫 育种 

分 类 号：S562.034[农业科学—作物学]