CAO Yong-qiang,WANG Hai-ying,ZHANG Hui-jun,et al.Heredity of 100 seed Weight between Crosses and Reciprocal Crosses in Different Soybean Parents[J].Soybean Science,2008,27(02):208-211.[doi:10.11861/j.issn.1000-9841.2008.02.0208]
大豆不同亲本正反交F3、BC1F2百粒重遗传规律研究
- Title:
- Heredity of 100 seed Weight between Crosses and Reciprocal Crosses in Different Soybean Parents
- 文章编号:
- 1000-9841(2008)2-0208-04
- Keywords:
- Soybean; Reciprocal crosses; 100-seed weight; Heredity
- 分类号:
- S565.1
- 文献标志码:
- A
- 摘要:
- 为进一步了解大豆百粒重的遗传规律,提高育种效率,以中、美大豆品种为亲本,对正、反杂交及回交后代群体的百粒重遗传表现进行研究。结果表明:F3群体百粒重平均值在一定程度上受母本影响,但不显著,倾向于小粒显性遗传,具有不显著的细胞质遗传特性。F3百粒重的变异系数偏小,分离强度不大,广义遗传力较高,可以在F3对其进行选择。F3百粒重分离强度及广义遗传力与组合的母本值关系密切,母本百粒重大的组合分离强度及广义遗传力相应偏大。用中国大籽粒亲本回交的BC1F2群体百粒重均值大于用美国中等籽粒亲本回交的BC1F2,但不一定大于F3,用父本回交的BC1F2百粒重分离强度均大于用母本回交的BC1F2,可以扩大选择空间。回交后代百粒重遗传表现在一定程度上受组合配置的影响。
- Abstract:
- To deeply comprehend the heredity of 100-seed weight and advance breeding efficiency,comparative studies were made on genetic performances of 100-seed weight at F3and BC1F2generations between crosses and reciprocal crosses of varieties from China and America. The mean of 100-seed weight at F3 generation was affected by female parents in a certain extent and was apt to small-seed apparent heredity. It may have not-marked heredity of cytoplasm. The variance coefficient of 100-seed weight at F3 generation was low,so separating intension was also low. We can select excellent unit because of high broad heritability at F3 generation. The separating intension and broad heritability of 100-seed weight at F3 generation were closely correlated with the female parents. The mean of 100-seed weight at BC1F2 generation was higher by Chinese big-seed parents than that by USA middle-seed,but may not be higher than that at F3 generation. The 100-seed weight at BC1F2generation was higher by male parents backcrossing than that by female,which could extend space of selection. In a certain extent,the genetic performances of 100-seed weight at BC1F2 generation are affected by different crossing-types.
参考文献/References:
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备注/Memo
基金项目:辽宁省教育厅资助课题(05L378)。