ABSTRACTS ON TREE BREEDING

31) INVESTIGATIONS ON PROPAGATION OF ASPEN (POPULUS TREMULA L.) BY ROOT CUTTINGS

Year/No: 1991/4                             ODC: 232.328.1
Author: TOPLU, F., TUNCTANER, K., TULUKCU, M.

In this study selection works of superior Populus tremula individuals and vegetative propagations were investigated.
47 superior individuals were selected in the natural habitats of Populus tremula in the different regions of Turkey. The effects of the factors in rooting of rooted cuttings such as diameter and dipping depth of cuttings and several planting mediums were investigated. Apart from this, 17 selected individuals were compared as regards their propagation by means of rooted cuttings and green cuttings.


32) ARTIFICIAL HYBRIDIZATION WORKS ON POPLARS (1987-1990)

Year/No: 1992/2                             ODC: 165.72
Author: TUNCTANER, K., TULUKCU, M., TOPLU, F.

Intra-specific and inter-specific crossing works on Populus nigra and P.deltoides were carried out during the period of 1987-1990. P.deltoides was used as female parent and consequently abundant seeds were obtained in crossing between P.deltoides and P. nigra according to the evaluations at nursery; rooting success of the temporary clones created from 1987 and 1989 crossings was found very satisfactory. P.deltoides clones obtained from intraspesific crossings showed high rooting percentages and Euramerican clones obtained from 1987 crossings showed good growth characteristics, such as diameter, height, stem from and crown form.


33) INVESTIGATION ON ADAPTATION OF BROADLEAVED FOREST TREE SPECIES TO MARMARA REGION IN TURKEY

Year/No: 1992/3                             ODC: 232.11
Authors: TULUKCU, M., TUNCTANER, K., TOPLU, F., AKCIDEM, E.

Eight broadleaved species trial were established in different sites in Hendek, Golyayla; Gebze, Gokdag; Istanbul, Research Forest of Faculty of Forestry; Vize, Degirmendereli; Kirklareli, Bakacak; Sarkoy, Helvatepe; Lapseki, and Karacabey, Bickidere in 1986. These trials were evaluated at the end of 6th year of field in 1991. Apart from this, combined analysis were made for common 15 species at these trials. The results of these evaluations showed that Vize, Hendek, and Kirklareli trials were the best trial sites and Robinia pseudoacacia was the best broadleaved species. For this reason, improved materials of Robinia pseudoacacia (variety, alone etc.) should be introduced to Turkey, and further research studies on R.pseudoacacia should be carried out systematically.


34) INVESTIGATION ON SELECTION OF THE POPLAR CLONES SUITABLE FOR BIOMASS PRODUCTION

Year/No: 1992/4                             ODC: 232.313
Author: TUNCTANER, K., TULUKCU, M

An experiment was established at Izmit Nursery in 1987 in order to compare the poplar clones conserning their biomass production. 30 poplar clones including the control clone "I-214" were taken part at the trial site. Randomized block design with two replications was used and 16 cuttings from each clone were planted 1.8 x 05 m spacing. At the end of 5 year period, the comparison of 30 clones based on survival, height and diameter, were made. Apart from this, the volume of the 16 clones were found by using the method of stem analysis. Furthermore, specific gravity and basic density values of these 16 productions per hectare were calculated. Acoording to the results of the investigations, the promising clones for short-rotation (2-5 years) biomass production were determined.


35) Adaptation trials of some boadleaved trees in East Mediterranean region

Year/No: 1994/169                              ODC: 
Author: AVCIOGLU, E., GULBABA, G. A., OZKURT, A.

This study was carried out to make the first selection of indigenius and exotic broadleaved species which can be adaptable to different site conditions of the East Mediterranean region.
At the end of sixth year, height measurements and survival percentages of the species/ provenances used in trials were compared. According to the results obtained from comparisons, suggestions were made for the trial sites representing different site conditions.


36) INVESTIGATIONS ON GROWTH AND TECHNOLOGIC PROPERTIES OF SOME POPLAR SPECIES

Year/No: 1994/5                             ODC: 232.313
Author:TUNCTANER,K.-TULUKCU,M.-TOPLU,F.

In this study, investigations were made on growth performances of 10 poplar clones at the trial site (populetum) estabilished in Samsun-Terme in 1978. Apart from this, technological properties of 4 clones (77/51, 45/51, S.177-3, I-214) were determined .P. deltoides clone "77/51" showed the maximum volume production and mean annual volume increment per hectare at the end of 13 year rotation period. This clone has also showed considerablly high vales regarding specific gravity, basic density, static bending, compression strength, splitting strenght and hardness, compared to the other clones.


37) ADAPTATION OF SOME POPLAR AND WILLOW CLONES TO THE LAKES REGIONS AND USING POSSIBILITIES IN PARTICLEBOARD INDUSTRY

Year/No: 1994/5                                                          ODC: 232.313

Authors:TUNCTANER, K.-TUTLUKCU, M.-TOPLU, F. 

In this study, growth performances and particleboard properties of poplar and willow clones at the trial sites, representing the lake district, were investigated. Evaluations were made on diameter, height, survival and index values of 24 poplar and 11 willow clones, at the end of 8 year period. Stem analysis were also made for the top 9 poplar and 2 willow clones determined from the evuluation of index values. Volume productions and annual volume increments of these clones per hectare were calculated. Considering the volume productions, the best 4 poplar clones and 1 willow clone were selected for making particleboards. Investigations were made on specific gravity, moisture content, bending strength, internal bond strength, thickness swelling ratio of these particleboards. As a conclusion, “I-214” showed reasonable growth performances and particleboard properties. Therefore, it was suggested for the plantations to be established with the purpose of providing wood as veneer and sawwood. “I-214” (P.x euramericana)  should be used in the plantations to produce wood for particleboard industry.


38) RESEARCH RESULTS OF COMPARISON POPULETA IN MARMARA AND CENTRAL ANATOLIA REGIONS IN TURKEY

Year/No: 1998/1                             ODC: 232.313.232.13
Authors: TUNCTANER.K.,TULUKCU.M.,TOPLU.F.,DURCAN.E

In this study, growth performances of poplar clones at the populeta established in Central Anatolia and Marmara regions were compared. Volume production and mean annual volume increments of the best 4 black poplar clones (Kocabey, Geyve, Behicbey, Gazi) were estimated. Apart from this, characteristics of wood technology and frost hardiness of these clones were investigated. The clone "Kocabey" was the superior to "Gazi" and the other clones, concerning their growth performances and resistancy against frost crack. Physical and mechanical properties (specific gravity, static bending, dynamic bending, splitting strength and hardness) of the clones were found very close to each other, however the clone "Behicbey" showed the highest values.

According to the 10 year results obtained from the populeta established at 3 different sites in Marmara region, P.deltoides clone "S.307-26" was found as the best clone on the basis of diameter, height and survival.


39) RESEARCH RESULTS OF ORIENTATION POPULETA IN MARMARA AND CENTRAL ANATOLIA REGIONS

Year/No: 1998/2                             ODC: 232.313.232.13
Authors: TUNCTANER.K, TULUKCU.M, TOPLU.F, DURCAN.E

In this study, adaptability and growth performances of the poplar clones at the orientation populeta established in Marmara and Central Anatolia regions, were investigated. In Central Anatolia, P.x euramericana clones "Kars 7" and "Kars 5" which were released in Turkey, showed better growth performances than "I-214".

The number of P.x euramericana and P.deltoides clones placed at the trial sites located in Marmara region, were compared regarding their growth performances and promising clones were determined for different site conditions. As a second stage, detailed comparisons will be implemented on growth and technological properties of these clones.


40) INVESTIGATION INTO GROWTH PERFORMANCE, SOME TECHNOLOGICAL WOOD PROPERTIES and SUITABILITY to PAPER PRODUCTION of SOME POPLAR CLONES

Year/No: 2004/196                             ODC: 165.62:262.13:812.7 Populus
Authors:TUNCTANER,K., As, N., ÖZDEN, Ö.

In this study, growth performances of poplar clones at the trials established at 3 different sites representing the Marmara Region were investigated. Apart from this, technological properties, fiber morphologies and paper characteristics of the superior clones at Ýzmit trial sites were studied. The comparisions were made concerning the volume productions of the clones at the end of 12 year rotation period and the clones showing better growth performance than “I-214” were estimated. For the selected clones at Ýzmit trial sites; P. deltoides : “Lena”, “S.307-26”, “Samsun” and P. x euramericana : “10/62”, “Cima”, “L. Avanzo” and the control clone “I-214”; the values of basic density, fiber morphology, fiber dimension relations, chemical properties (ash, lignin, holocelulose, α celulose) of wood samples, physical properties (basic weight, thickness, gravity, tearing, breaking length, bursting) and optical characteristics (brightness, whiteness, yellowness, opacity) of paper samples were also determined.
As a conclusion, the superior clones were selected regarding their volume productions and they were classified on the basis of their technological properties and suitabilities for paper making.


ABSTRACTS