期刊
JOURNAL OF INTEGRATIVE AGRICULTURE
卷 11, 期 1, 页码 43-52出版社
ELSEVIER SCI LTD
DOI: 10.1016/S1671-2927(12)60781-0
关键词
general combining ability (GCA); testcross; GCA mapping; quantitative trait locus (QTL); maize (Zea mays L.); introgression line
资金
- National Basic Research Program of China [2011CB100100]
- National Natural Science Foundation of China [30971791]
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.
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