摘要
通过对２５个杂种Ｆ１，７个农艺性状优势指数分析知：烟草杂种Ｆ１不仅具有中亲遗传现象，也存在正负杂种优势，杂优大小顺序是叶数、腰叶长宽比、株高、节距、茎粗、叶宽、叶长；亲子相关分析知杂种Ｆ１株高、节距、叶数、叶长宽比与双亲值正相关，与中亲值正相关，与双亲差异无关，而其余性状双亲对Ｆ１效应方向不一致，Ｆ１与双亲差异负相关；叶片有柄对无柄、小叶耳对大叶耳、心脏形对椭园形为显性；
The heterosis index of 7 agronomic Characteristics of 25 F1 hybrid was analyzed. The results showed that there were mid-parent heterosis, but also positive and negative heterosis; the order of heterosis was leaf amount>ratio of mid-leaf length to width>plant height>joint distance>stem diameter>leaf width>leaf length; it was positive correlation between plant height, joint distance, leaf amount, ratio of leaf lengty to width of F1 hybrid and parental values, mid-parent value and no correlation between the characteristics above and parental difference; the influence of other parental characteristics on F1 was variable. With leafstalk to non-leafstalk, small leaf-ear to big leaf-ear, heart type leaf to ellipse type leaf were dominant characteristics
出处
《云南农业大学学报》
CAS
CSCD
1997年第1期51-54,共4页
Journal of Yunnan Agricultural University
基金
云南省科委应用基础研究基金
关键词
烟草
杂种优势
亲子相关
Tobacco
Heterosis
Correlation between parents and offspring
