The pattern of genetic variation in shoot growth of Pinus brutia Ten. populations sampled from the Toros mountains in Turkey

The pattern of genetic variation in shoot growth of Turkish red pine (Pinus brutia TEN.) was studied in 180 open-pollinated families from a south to north transect in southern Turkey. Seedlings from 1 coastal, 1 inland and 2 centrally located populations (45 open-pollinated families each) were grown for 2 growing seasons in a forest nursery located near Antalya. The study revealed that both populations and families within populations varied significantly in all seedling traits except for free growth in the second year (SCHT92). In most seedling traits, the pattern genetic variation among populations suggests that there may be a as a clinal variation with respect to the distance from the Mediterranean Coast, but this needs to be tested further. The component of variation due to populations varied from 0% in SCHT92 to 57% in total height growth in the first growing season (FINHT91) while variance component due to families was from 0% in SCHT92 to 75.7% in seed weight (SW). Estimated family heritabilities were generally high for most traits, ranged from 0.20 in number of flushing in the first year (FLU91) to 0.96 in SW (estimated heritability for this trait is really a repeatability value). Genetic correlations between seed related traits and growth traits were moderately strong and positive, suggesting presence of maternal effect on early performances of seedlings. Generally, there were also moderate (0.22) to strong (0.93) genetic correlations between number of flushing and increment traits. Genetic correlations between phenological traits and increment as well as biomass related traits were not very strong and in most cases they were negative, indicating that those seedlings with more height growth and biomass are not necessarily the ones with longer growing seasons. In general, centrally located and coastal populations had similar shoot growth pattern-that is, families in these populations had more shoot flushes, heavier, more lateral branches and greater contribution to annual height increment by second more flushes than those families from the inland population. But, in all populations, the great portion of annual height increment in Turkish red pine was due to first flush (i.e. predetermined growth) indicating a conservative shoot growth pattern in early ages. The implications of this kind of shoot growth pattern as related to early evaluations of families in Turkish red pine breeding programs were also discussed in the paper.


The impact of over-exploitation on the genetic structure of Turkish red pine (Pinus brutia Ten.) populations determined by RAPD markers
Lise, Yildiray; Kaya, Zeki; Isik, Fikret; Sabuncu, Rumi; Kandemir, Irfan; Önde, Sertaç (2007-01-01)
To determine the possible impact of over-exploitation on the genetic structure of Turkish red pine (Pinus brutia Ten.) populations, three natural and three over-exploited (human degraded) populations of the species in the Mediterranean region of Turkey were investigated with Randomly Amplified Polymorphic DNA (RAPD). With the 80 RAPT) primers tested, 12 of them yielded 137 polymorphic RAPD fragments. Four of the studied populations maintained unique fragments. The mean proportion of polymorphic fragments fo...
Strong Genetic Control of High Wood Specific Gravity in Young Progenies of Pinus brutia: Potential of Early Selection for Industrial Plantations
Yıldırım, Kubilay; Ozturk, H.; Şıklar, Sadi; Balkiz, O. D.; Kaya, Zeki (2011-01-01)
To increase quality and amount of wood production in Turkish red pine (Pinus brutia Ten.), genetic control of wood specific gravity (WSG), tracheid length and growth traits was investigated in Ceyhan1A progeny trial by evaluating 168 families originated from six clonal Turkish red pine seed orchards. Wood samples were taken by destructive sampling during the rouging of this trial at the age of seven. Differences among the 168 families for mean WSG was large (ranged from 0.35 to 0.62), as indicated by high i...
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...
The phylogenetic relationship between populations of marginally and sympatrically located Pinus halepensis Mill. and Pinus brutia Ten. in Turkey, based on the ITS-2 region
Tozkar, C. Ozge; Önde, Sertaç; Kaya, Zeki (2009-01-01)
Turkish red pine (Pinus brutia) is a widespread and important forest tree species in Turkey, occurring mainly in southern, western, and northwestern Turkey, while the natural occurrence of Aleppo pine (Pinus halepensis) is restricted to 2 locations and is found sympatrically with Turkish red pine. In the present study sympatric populations of both species from Mugla and Adana provinces in Turkey were sampled, and the internal transcribed spacer 2 (ITS-2) region of ribosomal DNA was comparatively studied wit...
Genetic variation in Turkish red pine (Pinus brutia Ten.) seed stands as determined by RAPD markers
Kandedmir, GE; Kandemir, I; Kaya, Zeki (2004-01-01)
Turkish red pine (Pinus brutia Ten.) is one of the important tree species in Turkey. The species has been heavily disturbed by anthropogenic factors and fire, making it important to understand the magnitude of the impact on genetic diversity of areas reserved for seed production. To explore the extent of genetic variation in Turkish red pine seed stands, a random amplified polymorphic DNA (RAPD) marker system was used in the study. The estimated genic diversity for seed stands was found to range from H=0.17...
Citation Formats
Z. Kaya, “The pattern of genetic variation in shoot growth of Pinus brutia Ten. populations sampled from the Toros mountains in Turkey,” SILVAE GENETICA, pp. 73–81, 1997, Accessed: 00, 2020. [Online]. Available: