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WANG Xiuliang, YAO Jianting, ZHANG Jie, DUAN Delin. Status of genetic studies and breeding of Saccharina japonica in China[J]. Journal of Oceanology and Limnology, 2020, 38(4): 1064-1079

Status of genetic studies and breeding of Saccharina japonica in China

WANG Xiuliang1,2, YAO Jianting1,2, ZHANG Jie1,2, DUAN Delin1,2
1 Key Lab of Experimental Marine Biology, Institute of Oceanology, Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao 266071, China;
2 Lab for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266071, China
Saccharina japonica is one of the most important economic brown seaweeds. It is intensively cultivated on large scales in a number of Asian countries. The current annual, global production is about 8 million tons valued as about 4 million US dollars. Considerable efforts have been made to S. japonica in China since the 1950s on its cultivation. To further advance the cultivation of this species, detailed research of genetics and breeding studies are required. Recently, with the advancement of sequencing techniques, the genomics and comparative transcriptomics data were yielded, and quantitative trait locus (QTL) mapping has been conducted, along with genetic linkage maps constructed to this species. New strains have been bred and selected, with better characteristics, e.g. higher seawater temperature resistances and higher yields. In this review, we present the current status of genetic and breeding studies that have been performed to S. japonica in China, and provide guidelines for future developments in the areas of genetic selection and breeding for this species.
Key words:    Saccaharina japonica    next generation sequencing    genomics    transcriptomics    quantitative trait locus (QTL) mapping    DNA markers    linkage map    breeding    hybridization    cytogenetics   
Received: 2020-01-31   Revised: 2020-03-13
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