利用AMMI模型分析杂交水稻配合力
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国家自然科学基金项目(面上项目,重点项目,重大项目)


Combining Ability Analysis of Rice Hybrids Using AMMI Model
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The National Natural Science Foundation of China (General Program, Key Program, Major Research Plan)

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    摘要:

    配合力分析在对亲本育种潜力评价和品种选育中扮演着重要的作用。本试验对5?不完全双列杂交组合产量性状进行了配合力效应分析,并利用AMMI模型对杂交组合中双亲间互作效应(即特殊配合力)进行了深入剖析。结果表明,利用代表双亲产量“特殊配合力效应分值”的主成分轴(IPCA)向量可以很好地评价亲本的特殊配合力效应。根据亲本“特殊配合力效应分值”向量的的长度及方向,可对杂交组合中双亲互作效应分为4种情况:(1)杂交组合中至少有一个亲本的“特殊配合力效应分值”向量的坐标点比较靠近坐标原点,则测配杂交组合中双亲间的互作效应贡献很小,其杂种优势主要来源于双亲的一般配合力。(2)杂交组合中双亲“特殊配合力效应分值”向量的方向大致呈垂直状态,则测配杂交组合中双亲间的互作效应很小,其杂种优势也主要来源于双亲的一般配合力。(3)杂交组合中双亲“特殊配合力效应分值”向量的长度较长但方向大致相反,则杂交组合存在很大的负向特殊配合力效应。(4)杂交组合中双亲“特殊配合力效应分值”向量的长度均比较大且方向大致相同,则相应杂交组合的正向特殊配合力效应很高。因此,若要获得较大的双亲正向互作效应,则合理选配亲本至关重要;只有当两亲本“特殊配合力效应分值”向量的长度均比较大且向量方向较一致时才可以达到较大的正向互作效应

    Abstract:

    Analysis of combining ability plays an important role in assessing the breeding potential of parents and cultivation of hybrids. Five females and four males were used as parents to mate hybrids to analyze the combining ability effect, and the AMMI (additive main effects and multiplicative interaction) model was adopted to depose the interaction effect (same as the SCA, i.e. special combining ability) of parents. The results showed that the IPCA (interaction principal component axis) scores from AMMI model can well present the parents’ potential on the aspect of SCA, and the interaction effect of female and male parents also can be assessed by the inner product of their parents’ IPCA vectors. According to the length and direction of IPCA vectors, these parents may be classed into four groups: (1) the vector length of at least one parent of hybrid approximates the coordinate origin, implying that the heterosis of hybrid mainly depends on the GCA of parents; (2) the direction of two vectors of hybrid is in the vertical position, meaning that the interaction effect of hybrid approximates zero and performance of hybrid also greatly depends on the GCA of parents; (3) the direction of two vectors with the distant length is in the almost opposite position, implying that two parents have an enormous negative interaction effect; (4) the direction of two vectors with the distant length is in almost same position, implying that two parents have an enormous positive interaction effect. Above all, it is very necessary for developing hybrids with strong heterosis to select appropriate parents having distant length and similar direction of vectors representing the SCA score.

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张征锋,肖本泽.利用AMMI模型分析杂交水稻配合力[J].植物遗传资源学报,2015,16(2):400-404.

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  • 收稿日期:2014-04-18
  • 最后修改日期:2014-04-28
  • 录用日期:2015-02-03
  • 在线发布日期: 2015-02-03
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