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Genetic diversity among asexual and sexual progenies of Phytophthora capsici detected with ISSR markers

Author

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  • Ping Li

    (Department of Horticulture and Landscape, Anqing Vocational and Technical College, Anqing, P. R. China)

  • Dong Liu

Abstract

The population structure of Phytophthora capsici among asexual and sexual progenies was analyzed using ISSR. Thirty asexual progenies of one parent and three sexual populations were assayed for genetic diversity using 5 ISSR primers and DNA from 120 offspring of P. capsici was amplified. In total, 71 reproducible ISSR fragments were obtained, of which 100% were polymorphic, revealing high polymorphism among the isolates. Among them, the percentages of polymorphism of sexual and asexual progeny isolates were 100.00 and 77.46%, respectively. Genetic similarity coefficients among all the isolates ranged from 0.54 to 0.73. The sexual offspring population showed much more variability than the asexual offspring population with 76.26% variability attributed to diversity within populations as compared with 23.74% among populations. This research reveals that the sexual progeny population of P. capsici contributes more genetic diversity than that of asexual progeny population.

Suggested Citation

  • Ping Li & Dong Liu, 2021. "Genetic diversity among asexual and sexual progenies of Phytophthora capsici detected with ISSR markers," Plant Protection Science, Czech Academy of Agricultural Sciences, vol. 57(4), pages 271-278.
    • Handle: RePEc:caa:jnlpps:v:57:y:2021:i:4:id:28-2021-pps
    DOI: 10.17221/28/2021-PPS
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