Browsing by Author "Sen, SM"

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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.
Changing of Iaa (indol-3 Acid) Content at Different Organs of Walnut (Juglans Regia L) After Grafting
(international Society Horticultural Science, 1997) Sen, SM; Kazankaya, A; Testereci, H; Yoruk, IH
In this study, Walnut seedlings (Juglans regia L.) were grafted on dormancy period and placed into controlled conditions with 26 +/- 2 degrees C temperature and 60-70% humidity. IAA changes in shoot of graft, root and graft area were measured in 1, 14, 21, 28, 35, 42 and 49th days following grafting by high performance liquid chromatography (HPLC). IAA levels in the shoot of graft was maximum (251 ng/g) at the 21 st day, and minimum (59 ng/g) at the 49 th days. The levels of IAA of graft area were maximum (218 ng/g) at the 14 th day, and minimum (53 ng/g) at the 49th days. IAA concentration in roots were highest (213 ng/g) at the 14 th day later and minimum (42 ng/g) at the 49 th day. IAA levels showed rapid increase for 3 weeks in the shoot of graft and for 2 weeks in the root, and the graft area. IAA concentration had the decreasing and parallel tendency with each other after 21 th day.
Compositional Changes of Fatty Acids During the Development of Kernel of Yalova-1 and Yalova-4 Walnut Cultivars
(international Society Horticultural Science, 2001) Koyuncu, MA; Yarilgac, T; Kazankaya, A; Koyuncu, F; Küçük, M; Sen, SM
Changes of oil contents and fatty acids composition during the development of kernels of Yalova-1 and Yalova-4 walnut varieties were investigated. Samples were taken from trees by 20 days intervals in this period and analysed. Oil contents of cultivars increased as parallel to the kernel development. These increases were statistically significant (P <0.05). Palmitic (16:0) and stearic (18:0) acid contents have decreased as kernels develop. The decreases of palmitic acid contents were statistically significant, but stearic (P <0.05). Oleic (18:1) acid increased regularly and reached maximum level at the harvest date. Linoleic (18:2) and linolenic (18:3) acid contents decreased during the fruit development period. The changes of these acid contents were statistically significant except linoleic acid of Yalova-4 (P <0.05).
The Degrees of Repeatability in Walnut (Juglans Regia L) and Their Importance in Selection Breeding
(international Society Horticultural Science, 1997) Akca, Y; Yildiz, K; Sen, SM
This study was carried out to discuss the use of certain nut characteristics as a selection criterion, and reveal the importance of the degree of repeatability in selection breeding. The degrees of repeatability for nut weight (NW), kernel weight (KW), shell thickness (ST), nut length (NL), nut suture (NS) and nut cheek (NC) were found to be high. It has been concluded that the probability of the continuity of the superiority on following years is high for individuals having higher ratings for the above mentioned characters.
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 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.
An Evaluation on Yield Potential in Walnut (Juglans Regia L.)
(international Society Horticultural Science, 2000) Yarilgaç, T; Sen, SM; Balta, F; Kazankaya, A
In this study, yield potentials of Juglans regia selections were determined during two years 1996 and 1997 in the district Van (Turkey). A formula based on productions (%) and average numbers of pistillate flowers on terminal and lateral shoots was used. For this aim, yield index scores belonging to promising selections in terms of fruit characteristics were calculated. Yield potentials were classified in four groups low, middle, good and very good based on these scores. Consequently, five selections were considered as very good for yield potential.
Lateral Fruitfulness on Turkish Standard Walnut Cultivars and Promising Selections (Juglans Regia L.)
(international Society Horticultural Science, 2001) Sen, SM; Balta, F; Koyuncu, MA; Koyuncu, F; Yarilgac, T; Kazankaya, A
Included in the species Juglans regia L. in Anatolia with rather rich walnut populations from seed origin, there are a lot of walnut cultivars and promising selections with high nut quality and lateral fruit bearing characteristic. When compared to commercial walnut cultivars of the world, the results from studies carried out in different places of Anatolia such as Marmara Region, Northeast Anatolia Region, East Black Sea Region, Eastern Mediterranean Coastal areas, the districts Darende, Gurun, Tokat, Cameli, Bozkurt, Adilcevaz, Catak, Ahlat, Adiyaman, Sanliurfa, Mardin, Gevas, Ermenek, Posof, Ikizdere, Bahcesaray and Yalova until today can be said to be promising. The researches concerning some cultivars and selections currently continue. This paper deals with the results in relation to lateral fruitfulness and valuable fruit characteristics of the cultivars and promising selections from different areas of Anatolia.
Physical and Chemical Attributes of Peach Cultivars Grown Under Ecological Conditions in Van
(Eugen Ulmer Gmbh Co, 2004) Yarilgaç, T; Balta, F; Balta, MF; Muradoglü, F; Sen, SM
This study was carried out to determine fruit characteristics at different harvest periods of 'Halehaven', 'Dixired', 'Glohaven', jeferson', 'J.H. Hale', 'Redhaven','Earlyred',`June Gold' and 'Blake'peach cultivars grown under ecological conditions in Van province during 1999 and 2000, and also to estimate their suitable harvest times. Fruits were harvested at five days intervals in 1999, and at three days intervals during 2000. In the cultivars, phenological properties, physical traits and chemical analyses were determined for two years. Fruit weights varied to cultivars, harvest times and years. In 2000, 'J.H. Hale' (94.0 g), 'Blake' (86.2 g), 'Redhaven' (79.2 g) had the highest fruit weights. In 1999, fruit weights in the majority of cultivars were lower than those in 2000. In both years,'Earlyred' had the highest total soluble solid content: 17.2 % in 1999 and 19.2 % in 2000. This cultivar was followed by 'Redhaven' with 16.2 % and 'Dixired' with 16.2 % in 1999. The soluble solid contents were lower than those of the first year, depending on cultivars and on harvest times. Titratable acidity varied from 0.14 % ('Dixired', 1999) to 0.88 % ('Halehaven', 1999). In both years, harvest time for 'Earlyred' was earlier than that of other cultivars.
Promising Native Walnut Genotypes (Juglans Regia L.) of the East Black Sea Region of Turkey
(Amer Pomological Soc, 2001) Balci, I; Balta, F; Kazankaya, A; Sen, SM
In order to select promising native walnut genotypes, characteristics of trees situated on the Black Sea Region of Turkey during 1997 to 1999 were examined with regard to fruit properties. The walnut population consisted of 4200 seedling trees. Fifteen native genotypes selected were evaluated as promising. The genotypes exhibited a range of 11.8-18.7 g for inshell fruit weight, 6.25-9.23 g for kernel weight, 48-60% for kernel percentage, 1.02-1.75 mm for shell thickness, 65-100% for terminal fruitfulness and 30-75% for lateral fruitfulness.
Relations Between Graft Success and Structural Hormones on Walnut (Juglans Regia L)
(international Society Horticultural Science, 1997) Kazankaya, A; Sen, SM; Tekintas, FE
In this study, in walnuts (Juglans regia L.) grafted at one month intervals during one year, the relations between the graft success and the levels of structural hormones in the scions were evaluated. As for the months, the graft success was the highest in February (100 %), while it was lowest in June (54 %). As a consequence of the biological, it was determined that the structural hormones in the scions changed by months, but they generally became dense in the 4th, 7th, 9th and 10th bands. The effective inhibitions were not significantly recorded in none of the months. Finally, any relation between the graft success and the levels of the structural hormones was not considered.
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.
Some Nut Properties of Walnuts (Juglans Regia L.) of Edremit Country
(international Society Horticultural Science, 2001) Kazankaya, A; Koyuncu, MA; Koyuncu, F; Yarilgac, T; Sen, SM
This study was carried out between 1997 and 1998 in Edremit. As a result of evaluations, 38 selections were regarded as promising. Most selections had fruit weights over 11-12 g, kernel weights over 6-7 g, kernel percents over 45 and light colored kernels.
Some Promising Walnut Selections (Juglans Regia L.)
(international Society Horticultural Science, 2001) Yarilgac, T; Koyuncu, F; Koyuncu, MA; Kazankaya, A; Sen, SM
This study was carried out in the district of Gevas located in the Lake Van Region (East Anatolia) between the years of 1995 and 1998. In the study, it was aimed to determine the promising walnuts and to preserve as valuable genetic sources (Juglans regia L.) within existing population, all of which consisting of seedling trees. Thus, walnut preselections on which initial observations and evaluations were done before were investigated for long time so that they could be better illustrated. As a result of observations for four years, valuable selections were studied, and they were regarded as promising. Selections had nut weight between 10.38 and 17.04 g, kernel weight between 5.85 and 7.88 g, shell thickness between 0.86 and 1.75 mm, kernel percentage between 45.09 and 59.27 %, oil content between 55.74 and 68.52 %, and protein content between 16.21 and 21.86 %. In addition, nut dimensions, kernel color, lateral pistillate flowering percentages, and flowering characteristics etc. were also evaluated.