LI Sheng-you,SONG Shu-hong.Genetic Analysis for Fat Content in F2 Generation of Crosses with Different Genetic Background Soybeans[J].Soybean Science,2011,30(06):916-920.[doi:10.11861/j.issn.1000-9841.2011.06.0916]
不同遗传背景大豆杂交F2代脂肪含量遗传分析
- Title:
- Genetic Analysis for Fat Content in F2 Generation of Crosses with Different Genetic Background Soybeans
- 文章编号:
- 1000-9841（2011）06-0916-05
- Keywords:
- Soybean; F2 generation; Fat content; Genetic variation; Transgressive segregation; Agronomic characters
- 分类号:
- S565.1
- 文献标志码:
- A
- 摘要:
- 选用11个脂肪含量不同的大豆品种配置6个杂交组合，对遗传背景不同的大豆杂交组合F2代脂肪含量遗传变异进行分析，并对脂肪含量与蛋白质含量和主要农艺性状进行相关分析。结果表明：（1）双亲脂肪含量高，其F2代脂肪平均值高，F2代脂肪含量与中亲值呈极显著正相关；（2）F2代脂肪含量存在广泛的变异，遗传变异的大小与杂交组合的遗传丰度和双亲脂肪含量差值密切相关；（3）F2代脂肪含量超亲率随着双亲脂肪含量差值的增大而减少；（4）大豆脂肪含量与蛋白质含量、百粒重和底荚高呈极显著负相关，与单株粒数和株高呈极显著正相关。
- Abstract:
- Six hybrid crosses among eleven soybean cultivars with different fat content were used in the study to analyze the genetic variation of fat content in their F2 generation，and the correlation between fat content，protein content，and main agronomic characters.The results showed that in all crosses the higher the fat content of their parents，the higher the mean values of fat content in F2 generation，and F2 mean values had extremely positive correlation with mid-parent.It was found that extensive variation of fat content existed in F2 generation.The range of genetic variation was closely related with the Degree of Genetic Variety(D.G.V.)of cross and the difference of fat content between their parents.The transgressive rates of fat content in F2 generation decreased with the increasing of differences between their parents.The fat content in soybean had extremely negative correlation with the protein content，100-seed weight and the lowest pod height，but it had extremely positive correlation with seeds per plant and plant height.
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备注/Memo
基金项目：辽宁省自然科学基金资助项目（20082133）。