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Mating system and progeny genetic diversity of Camellia oleifera ‘Ruan Zhi’

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Abstract

Camellia oleifera Abel. is an important economic tree species of southern China. In this study, we evaluated the mating system and genetic diversity of a series of cultivars of C. oleifera ‘Ruan Zhi’. A total of 159 individuals from the progenies of four cultivars were tested by simple sequence repeat molecular markers. Results reveal that 11 pairs of primers showed polymorphism and their polymorphism information content value was greater than 0.73, suggesting that these primers could be used to identify the genetic diversity of open-pollinated populations. The average number of effective alleles (Ne = 4.88) was significantly different from the average number of alleles (Na = 12.18), and their distribution in the sample population was not uniform. The average observed heterozygosity (Ho = 0.96) was greater than the average expected heterozygosity (He = 0.79), and the population heterozygote was excessive. Shannon index was 1.84 and populations showed high genetic diversity. As regards to the mating system, the multilocus outcrossing rate was 0.996, and the single locus 0.866. These results indicate a high degree of outcrossing by C. oleifera ‘Ruan Zhi’. We recommend selecting individuals for high genetic gain from the progenies of cultivars because of outcrossing characteristics and genetic diversity for application to germplasm conservation and promotion.

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Acknowledgements

We would like to express our gratitude to Rong-gang Wang, Shan-xun Yang and Chong-xin Xie for their assistance in field work.

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Authors and Affiliations

  1. National Engineering Laboratory for Forest Tree Breeding, Key Laboratory for Genetics and Breeding of Forest Trees and Ornamental Plants of Ministry of Education, College of Biology Science and Technology, Beijing Forestry University, Beijing, 100083, People’s Republic of China

    Zijie Zhang, Jingxiang Meng & Yue Li

  2. Forestry Bureau of Sanjiang Dong Autonomous County, Liuzhou, 545500, Guangxi, People’s Republic of China

    Daofeng Pan

  3. Sanjiang Dong Autonomous County Bureau of Science and Technology, Liuzhou, 545500, Guangxi, People’s Republic of China

    Ci Yang

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  1. Zijie Zhang
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  2. Jingxiang Meng
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  3. Daofeng Pan
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  4. Ci Yang
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  5. Yue Li
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Corresponding author

Correspondence to Yue Li.

Additional information

Project funding: The work was supported by the applied technology research and development program of Liuzhou (No. 2010020401).

The online version is available at http://www.springerlink.com

Corresponding editor: Tao Xu.

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Zhang, Z., Meng, J., Pan, D. et al. Mating system and progeny genetic diversity of Camellia oleifera ‘Ruan Zhi’. J. For. Res. 30, 1805–1810 (2019). https://doi.org/10.1007/s11676-018-0732-4

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  • DOI: https://doi.org/10.1007/s11676-018-0732-4

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