摘要
对中国马褂木、北美鹅掌楸及其种间杂种 F113个花果数量性状的研究结果表明 :花被片长度 (LP)等 9个性状在类群间差异达显著或极显著程度 ,可用于类群识别 ;花药长度 (L A)等 11个性状在类群内个体间差异达极显著程度 ,说明类群内遗传多样性水平较高 ;杂种 F1在雄蕊数 (NS)等8个性状上 ,中国马褂木均表现出较强的遗传优势 ,花被片宽度 (WP)等 4个性状表现为偏父遗传或偏父超亲遗传 ;从性状间的相关性来看 ,聚合果气干质量主要由果宽决定 ,大花个体其雌蕊数较少但果实较大。采用聚类分析和主成分分析能有效地对
Thirteen floral and fruit quantitative traits of Liriodendron interspecific hybrids ( L. chinense×L. tulipifera) and its parent species were studied. The results showed that great differences among groups were found for the length of perianth segment (LP) and 8 other traits, which could be used in group discrimination. The length of anther (LA) and 10 other traits are different significantly among individuals in groups. This indicates that there has higher level polymorphism in groups. Compared with L. tulipifera, the hybrids are more like L. chinense in the number of stamen (NS) and 7 other traits, while the width of perianth segment (WP) and 3 other characters showed patroclinal inheritance or patroclinal transgressive inheritance. By means of the methods of cluster analysis and principal components analysis the specimens were grouped successfully.
出处
《林业科学研究》
CSCD
北大核心
2000年第3期290-294,共5页
Forest Research
关键词
鹅掌楸属
种间杂种
花果数量性状
遗传变异
Liriodendrom
interspecific hybrid
floral and fruit quantitative traits
inheritance and variation