某些特定的组合减去双亲一般配合后所呈现的表型偏差。
29 2、特殊配合力（specific combining ability，sca）： 指某特定组合的某性状的观测值与根据双亲的 普通配合力所预测的值的离差。
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In combinations crossed from the inbred line P6, the heterosis of root weight and length was relatively remarkeble, and the SCA value of the combination P6×P8 was the largest.
以自交系P6作为亲本配制的杂交组合,根质量和根长优势较为明显,P6×P8组合的特殊配合力效应值最高。
参考来源 - 萝卜自交系数量性状的配合力分析—《天津农业科学》—2009年第6期—龙源期刊网·2,447,543篇论文数据，部分数据来源于NoteExpress
各性状的一般和特殊配合力方差分析多达显著水平。
The variance analysis of general combining ability and specific combining ability in most characters were almost significant.
在此基础上进行了一般配合力、特殊配合力、总配合力的分析。
Further analysis have been done (about) general combining ability, special combining ability, total combining ability on the basis of above.
全生育期、有效穗、穗实粒数受特殊配合力效应的影响达极显著水平。
There were extreme significant levels of SCA with growth duration, effective panicle and filled grain per panicle.
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