中文摘要：

因为联合能力在 1942 被建议，揭开的努力位于这现象下面的基因基础是进行中的将近 70 年了，与小成功。基于联合能力的评估引起策略的一些被生产了，并且仍然广泛地在混合繁殖被使用。在这评论，位于这些繁殖策略下面的基因基础被讨论，并且一般联合能力(GCA ) 的潜在的基因控制被要求。我们建议 GCA 和生来的线的收益可能被 loci 的不同集合遗传上在被播送进后代的玉米染色体上控制。不同的生来的线可能为 GCA 拥有不同有利等位基因。在混血儿，涉及多重小径的 loci，直接或间接地与收益性能被联系，可能被 GCA loci 调整。另外，从基因渗入线用一套 testcross 子孙印射的 GCA 的一个盒子被提供。

英文摘要：

Since the combining ability was proposed in 1942, efforts to uncover the genetic basis underlying this phenomenon have been ongoing for nearly 70 yr, with little success. Some breeding strategies based on evaluation of combining ability have been produced, and are still extensively used in hybrid breeding. In this review, the genetic basis underlying these breeding strategies is discussed, and a potential genetic control of general combining ability （GCA） is postulated. We suggested that GCA and the yields of inbred lines might be genetically controlled by different sets of loci on the maize genome that are transmitted into offspring. Different inbred lines might possess different favorable alleles for GCA. In hybrids, loci involved in multiple pathways, which are directly or indirectly associated with yield performance, might be regulated by GCA loci. In addition, a case of GCA mapping using a set of testcross progeny from introgression lines is provided.