Abstract
Restriction site amplified polymorphism (RSAP) was used, for the first time, to analyze the genetic structure and diversity of four, mainly cultivated, varieties of the brown alga, Saccharina japonica. Eighty-eight samples from varieties “ Rongfu ”, “ Fujian ”, “ Ailunwan ” and “ Shengchanzhong ” were used for the genetic analyses. One hundred and ninety-eight bands were obtained using eight combinations of primers. One hundred and ninety-one (96.46%) were polymorphic bands. Nei’s genetic diversity was 0.360, and the coefficient of genetic differentiation was 0.357. No inbreeding-type recession was found in the four brown alga varieties and the results of the “ Ailunwan ” variety using samples from 2 years showed that the variety was becoming less diverse during the selection inherent in the breeding program. Genetic diversity and cluster analyses results were consistent with these genetic relationships. The results show the RSAP method is suitable for genetic analysis. Continuous inbreeding and selection could reduce the genetic diversity effectively; therefore periodical supervision is required.
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Supported by the National Special Research Fund for Non-Profit Sector (No. 200805075), the Shandong Foundation for Development of Science and Technology, China (No. 2007GG10005018), the Genetically Modified Organism Technology Major Project (No. 2009ZX08009-100B), the National High Technology Research and Development Program of China (863 Program) (Nos. 2010AA10A401, 2012AA10A406), and the National Agricultural Transformation (No. 2010GB23600666)
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Zhao, C., Liu, C., Li, W. et al. Application of restriction site amplified polymorphism (RSAP) to genetic diversity in Saccharina japonica . Chin. J. Ocean. Limnol. 31, 830–834 (2013). https://doi.org/10.1007/s00343-013-2122-2
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DOI: https://doi.org/10.1007/s00343-013-2122-2