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研究结果表明,陆地棉品种间杂种F_1的产量性状普遍存在中亲优势,但霜前皮棉竞争优势在15％以上的组合较少。中亲优势的产生主要依赖于特殊配合力,而与一般配合力无明显关系。一般配合力是形成超标杂种的基础,而特殊配合力是产生竞争优势的关键,两种配合力独立遗传,共同制约F_1的性状表现。由亲本性状可间接预测其一般配合力,特殊配合力似乎与地理远缘有关。
The results showed that the yield traits of hybrid F 1 among Upland cotton cultivars tended to be pro-dominant, but there was less combination with more than 15% competitive pre-frost lint. The progeny in the main depend on the special combining ability, but with no obvious relationship with the general combining ability. The general combining ability is the basis for the formation of overbalanced hybrids, while the special combining ability is the key to produce competitive advantage. The two combining abilities are independently inherited, which constrain the performance of F_1. The parental traits can indirectly predict their general combining ability, and the special combining ability seems to be related to the geographical distance.