Browsing by Author "Karadeniz, T"

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Changing of Flavan Contents at Some Organs of Walnut Seedlings (Juglans Regia L) Exposed To the Controlled Grafting Conditions
(international Society Horticultural Science, 1997) Sen, SM; Karadeniz, T; Balta, F; Tekintas, FE; Tanrisever, A
In this study, changing of the flavans, which are one of the phenolic compounds, in the shoot tips, the roots and the bases of lateral branches was followed. The flavan changes after 1, 15, 30 and 45 days in the organs of two years old seedlings of walnut (Juglans regia L.) under controlled grafting conditions with 26+/-2 degrees C temperature and 60-70 % humidity were determined by TLC (Thin Layer Chromatography). The observations in the first 30 days were evaluated in relation to the anatomical structure of the graft union, and the changes of 50 days were considered connected with changing of the phenolic compounds in case of exposing to the controlled conditions. Consequently, the flavans decreased 35.95 % in the shoot tips, 32.68 % in the bases of lateral branches and 19.38 % in the roots in first 30 days. But, they increased 48.86 % in the shoot tips and 34.29 % at the roots while reducing 68.81 % in the bases of lateral branches from 30th day to 50th day. In addition, from the 1st day to 50th day they showed a decrease of 4.66 % in the shoot tips and of 79.00 % in the base of lateral branches. but an increase of 8.27 % in the root.
Effects of the Flavan Contents Extracted From Walnut (Juglans Regia L) on Coleoptile Growth, and a Comparison of Relations Between the Total Flavans and the Graft Success With These Effects
(international Society Horticultural Science, 1997) Karadeniz, T; Balta, F; Sen, SM; Tekintas, FE; Tanrisever, A
In order to study the biological effects of the flavans on coleoptile growth of oats (Avena sativa L.), the total flavan contents (Catechin, epicatechin, biflavan and oligomer flavan), one of phenolic compounds in phloem tissues of annual shoots of walnut collected monthly for one year were detected by TLC (Thin Layer Chromatography). Coleptile developments in the mediums of Flavan, Flavan+ IAA, IAA (Indole acetic acid), and control treatments were evaluated. Flavans inhibited the coleopthyl growth between 6.30 % and 12.73 % in all months according to control treatments. On the other hand, chip-buddings were made each month, and the total flavans in phloem tissues were also determined. Therefore, the graft success and changing of the total flavans in the annual shoots according to months were discussed compared with the inhibiting effects of the flavan treatments. Both the inhibiting percentages of the flavans on coleopthyl growth and also the total flavan contents in the annual shoots were found to be higher in May, July and August months when the graft success was lower. Namely, the total flavans in the plant structure and their biological effects in the flavan medium showed a negative relation with the graft success in these months. But, similar relations were not recorded in all months. The results revealed that graft success might not depend on only the flavan contents in the structure, but also other factors such as anatomical structure, hormonal conditions of the rootstock and scion, and graft technique, etc.
The Effects on Quality Hazelnut of Direction
(international Society Horticultural Science, 1997) Karadeniz, T; Kup, M
This study was done for determination of direction effects on hazelnut quality at Espiye county (Giresun). Fruit samples were collected from 12 different gardens at same altitude and four directions. Several fruit characteristics such as fruit weight, kernel weight, kernel ratio, shell thickness, protein and oil contents were determined. Consequently, the east direction on quality of hazelnut in terms of physical and chemical effects was the best direction. It has been considered that east direction in establishing hazelnut gardens should be preferred.
The Effects on Seed Germination and Seedling Growth of the Tissue Extracts Obtained From Different Organs of Walnut (Juglans Regia L)
(international Society Horticultural Science, 1997) Balta, F; Karadeniz, T; Sen, SM; Tekintas, FE; Tanrisever, A
The effects on germination and hypocotyl and primary developments of cucumber seeds of the tissue extracts, which were added to germination mediums as 2 ml, 4 ml, 6 ml and 8 ml, belonging to phloem, bark with and without buds, bark of shoot tip, root bark and tip buds were evaluated. While no germination in the mediums of 6 ml and 8 ml extracts was not seen, germinations were observed in the mediums of 2 ml and 4 ml extracts and control treatments. Tissue extracts were recorded to have shown an inhibiting effect. In addition, total flavan contents of different parts changed between 4.32 mg/g and 8.27 mg/g.
The Evaluations on Preselection of the Hazelnut 'tombul and 'palaz Cultivars Grown in Carsamba and Terme (Samsun) Districts
(international Society Horticultural Science, 1997) Balta, F; Balta, F; Karadeniz, T
The study aimed at preselection of quality types on 'Tombul' and 'Palaz' cvs. grown in Carsamba and Terme districts. Important nut characteristics in preselected types were evaluated. The types of Tombul had nut weight between 2.05 g and 2.32 g, kernel weight between 1.17 g and 1.28 g, kernel ratio between 53.86 % and 57.53 % and shell thickness between 0.820 mm and 0.947 mm. The types of Palaz had nut weight between 2.10 g and 2.43 g, kernel weight between 1.13 g and 1.31 g, kernel ratio between 53.26 % and 54.58 % and shell thickness between 0.845 mm and 0.970 mm. All types in terms of fruit characteristics were considered as promising hazelnuts.
Hazelnut Fruit Characteristics Which Are Grown at Van Lake Region and Hizan
(international Society Horticultural Science, 1997) Karadeniz, T; Balta, F; Cangi, R; Celik, F
This study was done in order to investigate fruit characteristics of hazelnuts grown at Lake Van around and Hizan county. 26 types were evaluated. The types had nut weight between 1.97 g and 3.23 g, kernel weight between 0.72 g and 1.27 g, kernel ratio between 30.92 % and 49.35 %, shell thickness between 0.78 mm and 1.47 mm, fruit number between 310 and 508 per kg, fruit length between 17.68 mm and 26.17 mm, fruit width between 16.84 mm and 22.07 mm, fruit cheek between 15.07 mm and 20.0 mm and shape index (length/width) between 1.01 and 1.44. In addition, the highest empty fruit ratio and double kernel ratio in the types were 10 %, but the highest kernel defects were 15 %.
Relations Between Cambial Activity and Phenolic Compounds
(international Society Horticultural Science, 1997) Karadeniz, T; Balta, F; Balta, F; Battal, P
The aim of this study was to determine relations between cambial activity and flavan contents on hazelnut. While cambial activity were followed on cross sections between 14 February and 13 September, flavan contents were detected in phloem tissues of annual shoots between same dates. According to results, cambium under ecological conditions of Van province activated in mid April, summer wood started to form in the second half of June, cambial activity finished at the beginning of October. The level of flavans were lower in fast growing period, and higher towards ends of vegetation period. There was a positive relation between cambial activity and flavan contents.
Relations Between Phenolic Compounds and Graft Success in Walnut (Juglans Regia L)
(international Society Horticultural Science, 1997) Karadeniz, T; Kazankaya, A; Balta, F; Sen, SM
In the study, the relations between the graft success and the phenolic contents of the scions, which will be grafted, on 9 walnut cultivars (Juglans regia L.) were discussed. III addition, effects of structural hormones in the scions belonging to each cultivar were biologically tested with coleoptile developments. Consequently, a negative relation between the graft success ratios and the phenolic contents of the scions was found.