关键词: 荔枝, 特异性分子标记, 分子标记辅助选择, 育种应用

Abstract: Litchi breeding has been mainly resort to seedling selection and phenotype selection for a long term. Considerable difficulties in the initial stage and slow progress of genetic improvement in litchi were mainly due to its unclear genetic background of germplasm, chaos of cultivar name, lack of high efficient modern technology such as early identification of hybrids and functional gene exploration. It is urgent to develop and improve marker-assisted breeding in litchi, so as to overcome the obstacles of traditional breeding and provide new technical support for genetic improvement in litchi breeding. In this paper, we summarized the application of litchi SSR and SNP, two kinds of specific molecular marker, on germplasm genetic relationships analysis, core collection construction, germplasm accurate identification and molecular barcode construction, hybrid identification, as well as genetic map construction. The paper was expected to provide theoretical and practical reference for the breeding application of specific molecular markers in litchi.

Key words: litchi, specific molecular markers, molecular marker-assisted selection, application in breeding