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The aim of this study was to determine the genetic diversity of 18 tea (Camellia sinensis) genotypes and 6 varieties collected from different provinces in the Black Sea region of Turkey. DNA isolation was performed according to the CTAB method of tea samples. PCR was performed for all DNA samples with 59 ISSR primers. In order to determine the genetic relationship between tea genotypes among these primers, 15 polymorphic ISSR primers were used. At the end of the PCR procedures, the polymorphism rate was determined as 77?rom the bands formed. As a result of the analysis of products obtained by ...Более
The cotton whitefly (Bemisia tabaci Genn.) is a major pest of cultivated plants in tropical and subtropical regions. In this study, the genetic diversity between populations and various biotypes of B. tabaci collected from Hatay, Adana, Icel, Antalya, Mugla, Aydin and Denizli provinces of Turkey were investigated using mitochondrial cytochrome oxidase subunit 1 (mtCOI) sequences. Thirty-two nucleotide variations were found in a 617 bp mtCOI sequence of the among the populations studied. Phylogenetic analysis divided the B. tabaci populations of Turkey into two groups clustering around the main ...Более
In this study, the resistance status to imidacloprid, lambda-cyhalothrin and endosulfan of twenty Bemisia tabaci (Genn.) populations collected in Hatay, Adana, Mersin, Antalya, Mugla, Aydin and Denizli provinces in the Mediterranean and Aegean regions of Turkey in 2005-2006 were investigated. The lethal concentration (LC) values for each population were determined by the leaf dipping method. The resistance ratios were calculated by dividing the LC50 values of the populations by the LC50 values of a susceptible population. The LC50 values of the B. tabaci populations to imidacloprid, lambda-cyh ...Более