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为估测遗传组分变异所采用的多数试验设计,都是假定不存在上位性效应的.但是,上位性的相互作用,许多小麦专家曾多次做过报道(Singh等,1976; Ketata等,1976; Singh,1981).在多数的遗传分析情况下,由于上位性的存在而使分析结果出现偏差.然而,三重测交不仅能准确地检测上位性效应,而且,如果不存在上位性时,还能无偏差地估算加性(D)和显性(H)组分.此外,使用三重测交还可进一步通过适当的育种方法创造出遗传变异来.因此,本试验采用Jinks和Perkins(1970)修改的三重测交法,试图查明普通小麦中上位性的作用.
Most experimental designs used to assess genetic component variation are assumed to be epistatic.14 However, epistatic interactions have been reported many times by many wheat experts (Singh et al., 1976; Ketata et al. 1976; Singh, 1981). In most cases of genetic analysis, the results of the analysis deviate due to epistasis. However, triple test can not only accurately detect the epistatic effect, but also, if there is no epistasis, The additive (D) and dominant (H) components can also be estimated without bias. In addition, genetic variation can be further generated by appropriate breeding methods using triplet crossover.Therefore, this experiment uses Jinks and Perkins (1970) Modified triple test method, trying to identify the role of epistasis in wheat.