Abstract:

The strategy, progress and molecular mechanism of crop QTL cloning were reviewed in this paper. Summarized 37 successfully cloned QTLs in crops, we found that the quantitative traits were controlled by a few kinds of genes, such as transcription factors, protein kinase, cytokinin oxidase, etc. More over, 12 of the 37 genes were transcription factors, which suggested that transcription factors are important reasons for plant evolution and variation. With the development of sequence techniques, much more advantage for QTL mapping will be provided by enormous genomic data and much more QTLs will be cloned.