Magnitude and efficiency of genetic diversity captured from seed stands of Pinus nigra (Arnold) subsp pallasiana in established seed orchards and plantations

Date

2012-05-01

Author

Cengel, Burcu
Tayanc, Yasemin
Kandemir, Gaye
Velioglu, Ercan
Alan, Murat
Kaya, Zeki

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To test how efficiently plantations and seed orchards captured genetic diversity from natural Anatolian black pine (Pinus nigra Arnold subspecies pallasiana Holmboe) seed stands, seed sources were chosen from 3 different categories (seed stands (SS), seed orchards (SO) and plantations (P)) comprising 4 different breeding zones of the species in Turkey. Twenty-five trees (mother trees) were selected from each SS, SO and P seed sources and were screened with 11 Random Amplified Polymorphic DNA (RAPD) markers. Estimated genetic diversity parameters were found to be generally high in all Anatolian black pine seed sources and the majority of genetic diversity is contained within seed sources (94%). No significant difference in genetic diversity parameters (numbers of effective alleles, % of polymorphic loci and heterozygosity) among seed source categories was found, except for a slight increase in observed heterozygosities in seed orchards. For all seed source categories, observed heterozygosity values were higher (H-o = 0.49 for SS, 0.55 for SO and 0.49 for P) than expected ones (H-e = 0.40 for SS, 0.39 for SO and 0.38 for P) indicating the excess of heterozygotes. In general, genetic diversity in seed stands has been transferred successfully into seed orchards and plantations. However, the use of seeds from seed orchards can increase the amount of genetic diversity in plantations further. The study also demonstrated that number of plus-tree clones (25-38) used in the establishment of seed orchards was adequate to capture the high level of diversity from natural stands.

Subject Keywords

Anatolian black pine, Pinus nigra subspecies pallasiana, RAPD, Seed stand, Seed orchard, Plantation, Genetic diversity, Forestry practices

URI

https://hdl.handle.net/11511/33346

Journal

NEW FORESTS

DOI

https://doi.org/10.1007/s11056-011-9282-8

Collections

Department of Biology, Article

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Citation Formats

B. Cengel, Y. Tayanc, G. Kandemir, E. Velioglu, M. Alan, and Z. Kaya, “Magnitude and efficiency of genetic diversity captured from seed stands of Pinus nigra (Arnold) subsp pallasiana in established seed orchards and plantations,” NEW FORESTS, pp. 303–317, 2012, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/33346.