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

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


Genetic variation in wood specific gravity of half-sib families of Pinus nigra subsp pallasiana tested at the juvenile stage: Implications for early selection
Kaya, Zeki; Temerit, A; Vurdu, H (2003-01-01)
Seeds from 7 populations (total of 281 half-sib families, progeny test) and 35 seed stands (provenance test) representing natural range of Anatolian black pine (Pinus nigra subsp. pallasiana) were sown in a forest nursery in Ankara in 1990 and raised until age 3. Stem wood specific gravity (WSG) of all seedlings was determined at age of 3. The results of this study indicated that WSG did not vary significantly neither among the 7 populations (ranging from 0.41 to 0.42) nor among 35 seed stands (ranging from...
Genetic structure of black pine (Pinus nigra ARNOLD subspecies pallasiana) populations sampled from the Bolkar Mountains
Tolun, AA; Velioğlu, E; Çengel, Burcu N; Kaya, Zeki (2000-01-01)
In order to determine the magnitude and pattern of genetic diversity among Anatolian Black pine (Pinus nigra ARNOLD subspecies pallasiana) populations sampled in Bolkar Mountains and to recommend the potential populations which may be suitable for in situ conservation of genetic resources in this species, isoenzymes from 14 enzyme systems were investigated by starch gel electrophoresis. For this reason, open pollinated seed megagametophytes of half-sib families originated from the four populations (Camliyay...
Pattern and magnitude of genetic diversity in Pinus nigra ARNOLD subspecies pallasiana populations from Kazdagi: Implications for in situ conservation
Cengel, Burcu; Velioğlu, Ercan; Tolun, Ayper A; Kaya, Zeki (2000-01-01)
To determine the genetic structure of black pine (Pinus nigra ARNOLD subspecies pallasiana), populations sampled from Kazdag (Eybekli, Asar, Katrandag, Kalklm, Gurgendag, Kapidag, Mihlidere). Isozymes from 16 enzyme systems were investigated from haploid female megagametophytes by starch gel electrophoresis.
Kaya, Zeki (1994-01-01)
To determine the genetic structure of marginally located populations of Pinus nigra var pallasiana, seedlings of open pollinated families from 7 populations were raised in Kizilcahamam nursery near Ankara for 2 years. Seed weight (SW) and cone weight (CW) for families, number of cotyledon per seedling (GOT), timing of bud set in 1990 (BS90) and in 1991 (BS91), bud burst timing of seedlings in 1991 (BB91), height growth in 1991 (HT90) and final height growth in 1991 (HT91) and final diameter growth of seedli...
Genetic variation pattern among Abies cilicica (Pinaceae) populations: Adaptive seed and seedling traits
Gülsoy, Ali Murat; Doğan, Musa; Department of Biology (2022-9-12)
The pattern of genetic variation in adaptive seed and seedling traits of Abies cilicica was investigated using 160 families from 8 populations representing the species' natural range for two years in the Olcay Forest Nursery in Konya. The study indicated that both populations and families within populations varied significantly in seed and seedling traits. The pattern of genetic variation among populations suggests that there may be a clinal variation concerning altitude and latitude regarding these traits....
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: