Browsing by Author "Gevrekci Y."

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    Application of the RAPD technique and morphological characteristics in cultivated olives (Olea europaea sativa)
    (2010) Sesli M.; Yegenoglu E.D.; Gevrekci Y.
    Five different morphological characteristics (width, length, width/length, stem length, stem thickness) were considered in 18 cultivated olives and discriminant analysis was applied. Using primers OP-I (1- 20) and OP-Z (7, 8, 9, 10 and 11) in the same olives, evaluable bands were obtained from 12 primers out of 25. PCR analysis was repeated twice and those providing stable bands in the end of both analyses were evaluated. Genetic distances of cultivated olives were determined using neighbor-joining (Mega 4.1 program) method. SPSS 15.0 package program was used in the evaluation of morphological data of plants with the discriminant analysis; and in accordance with the discriminant results, while accurate estimations were made among the groups in olives, there had been misclassified estimations in some of them. The purpose of study is to determine the genetic distances of cultivated olives which economically important by applying Neighbor-joining method with the data obtained using RAPD analysis; and to classify the some morphological characteristics of same olives with the discriminant analysis. ©2010 Academic Journals.
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    Determining the genetic relationships between cultivated type olives using ISSR and morphological markers
    (Triveni Enterprises, 2017) Yegenoglu E.D.; Sesli M.; Gevrekci Y.
    Aim: The study aimed to compare morphological characters and Inter-simple sequence repeat data based trees, and examine the genetic relations in ten olive varieties among cultivated type olives grown commonly in different regions of Turkey. Methodology: Ten olive varieties were evaluated with some morphologic markers and ISSR marker. All analyses were conducted with Numerical Taxonomy System (NTSYS). The cluster analysis was performed with unweighted pair group method with arithmetic average (UPGMA) clustering algorithm. Results: The results showed that there was a moderate correlation between pairwise distances estimated from ISSR data and distances from morphological characters (0.511). The Euclidean Distance matrix represented that the lowest value was between Tavsan Yuregi and Cilli (1.62), while the highest value was between Manzanilla and Cekiste (7.91). According to Jaccard coefficient, the samples closest to each other were (Memecik and Gemlik); and the samples farthest to each other were (Halhali and Manzanilla). I n t e r p r e t a t i o n: Determining the genetic relations in agriculturally economic plants is valuable in terms of protecting the gene sources, determining t h e h o m o n y m s a n d synonyms, and developing b r e e d i n g p r o g r a m s. M o r p h o l o g i c a l a n d molecular markers may be used in the identification of genetic variability. Mutually complementary information can be obtained by using m o r p h o l o g i c a l a n d molecular markers together. © Triveni Enterprises, Lucknow (India).