抗虫棉杂交种杂种优势及亲子相关分析  

Analysis of Heterosis and Parent-Offspring Correlation of Insect-Resistant Cotton Hybrid

作　　者：李红[1] 李哲[1] 崔秀珍[1] 王业智 

机构地区：[1]河南农业大学 [2]河南豫优农业科技发展有限公司,郑州45002

出　　处：《吉林农业科学》2008年第1期13-15,18,共4页Journal of　Jilin Agricultural Sciences

基　　金：河南省科技攻关课题(0422010100);河南省教育厅科技攻关项目(200510467006)

摘　　要：利用5个具有抗虫基因的棉花品种(系)作母本与6个非抗虫棉品种(系)作父本,采用NCⅡ交配设计进行杂交,研究抗虫杂交棉F1代产量与品质性状的杂种优势、性状相关和亲子相关。结果表明,整齐度和单铃重具有较强的中亲优势和竞争优势;2.5%跨长与整齐度、比强度和籽指之间极显著正相关;杂种一代大多性状不同程度的受到亲本的影响,亲子相关分析为利用亲本初步预测杂种一代性状表现、杂交制种亲本选择选配和性状改良提供理论依据。Using five insect-resistant cotton cultivars （or lines）as female parents and six normal cotton cultivars （or lines） as male parents, crosses were made by NCⅡ design to analyze the heterosis, characters correlation and parent-offspring correlation of quality and yield characters in insect-resistant F1 hybrid cotton. The results showed that uniformity and boll weight have competitive heterosis and mid-parent heterosis. The 2.5% span length （fiber length） was significantly correlated with uniformity, specific strength and seed percentage at 0.01 levels. The most of characters were affected by their parents at different level. The analysis of parent-offspring correlation could be used as theory basis for predicting performances of hybrids characters, selecting inbred lines as parents and improving characters of parents.

关 键 词：抗虫杂交棉 杂种优势 亲子相关 

分 类 号：S562[农业科学—作物学]