| 轮回选择在烤烟品种改良中的应用探讨 |
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| 引用本文： | 曹景林,王毅,程君奇.轮回选择在烤烟品种改良中的应用探讨[J].中国农学通报,2012,28(10):80-86. |
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| 作者姓名： | 曹景林 王毅 程君奇 |
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| 作者单位： | 湖北省烟草科研所,武汉,430030 |
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| 基金项目： | 中国烟草总公司2010年科技重点项目“烤烟杂种优势固定技术研究与优质抗病新品种选育”（110201002004） |
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| 摘 要： | 笔者在国外学者研究文献的基础上,归纳了轮回选择在烤烟品种改良中的应用价值,并结合烤烟作物自身特点,分析了烤烟育种应用轮回选择的优势,最后结合育种实践经验,指出创建烤烟轮回选择基础群体应注意亲本的选配、亲本的数目及基础群体的合成方式,提出多目标烤烟育种采用改良混合选择法结合S1选择法的轮回选择程序,同时建议采用开放式的轮回选择方案、适时引入适当遗传比率的优异种质或基因,根据基础群体所包含的种质状况、选择性状的遗传模型及遗传复杂性确定轮回选择后代种植群体规模,依据轮回选择群体的规模、轮回选择实际进程和目标性状遗传方式确定对后代的选择强度,采用约束指数对多个目标性状同时进行选择。
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| 关 键 词： | 烤烟 轮回选择 综合性状 品种改良 |
| 收稿时间： | 2011/10/25 0:00:00 |
| 修稿时间： | 2011/12/25 0:00:00 |
Discussion on the Application of Recurrent Selection in the Improvement of Flue-cured Tobacco Varieties |
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| Cao Jinglin
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Wang Yi
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Cheng Junqi.Discussion on the Application of Recurrent Selection in the Improvement of Flue-cured Tobacco Varieties[J].Chinese Agricultural Science Bulletin,2012,28(10):80-86. |
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| Authors: | Cao Jinglin Wang Yi Cheng Junqi |
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| Institution: | ( Tobacco Research Institute of Hubei Province ,Wuhan 430030) |
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| Abstract: | In this paper,the value of flue-cured tobacco recurrent selection breeding were summed up on the basis of the literature of foreign scholars,along with,advantages of recurrent selection applied in flue-cured tobacco breeding were analyzed combined with the characteristics of flue-cured tobacco crops.Finally, combined with breeding experience,the author pointed out that constructing tobacco recurrent selection basis groups should pay attention to choice of parents,number of parents and synthesis method of base group;put forward that recurrent selection program of multi-objective breeding for flue-cured tobacco should be improved mass selection method combined with S1 selection method;and recommended the use of open recurrent selection scheme with the timely introduction of excellent germplasm gene with appropriate genetic ratios,the determination of recurrent selection population size according to the germplasm contained in basis groups,genetic model and genetic complexity of selected traits,the determination of selection intensity for offspring based on the scale of recurrent selection population,the actual process of recurrent selection and the genetic model of target traits,and the selection of multi-objective traits at the same time using a constraint index. |
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| Keywords: | flue cured tobacco recurrent selection comprehensive characters variety improvement |
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