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Quality characteristics of the mixtures of some warm season perennial grasses with alfalfa (Medicago sativa L.) under irrigated conditions in the Mediterranean region of Turkey

Selahattin ÇINAR

This study was conducted to determine forage quality characteristics of duo (alfalfa + one grass) and trio (alfalfa + two grasses) mixtures of some warm season perennial grass species such as dallis grass (Paspalum dilatatum Poir.), Rhodes grass (Chloris gayana L.), Bermuda grass (Cynodon dactylon (L.) Pers.) Guineae grass (Panicum maximum Jacq.), blue couch grass (Digitaria didactyla Willd) and finger grass (Digitaria milanjiana (Rendle) Stapf) with alfalfa as well as their pure sowings under irrigated conditions in the Mediterranean region of Turkey during 2010-2012 growing seasons. In the s ...More

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CHARACTERIZATION OF TEA (CAMELLIA SINENSISL.) GENOTYPES GROWN IN TURKEY BY ISSR MARKERS

Ahmet AYGÜN

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 ...More

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DETERMINATION OF BOTANICAL COMPOSITION, HAY YIELD AND FORAGE QUALITY OF SOME NATURAL RANGELANDS IN KYRGYZSTAN'S CHUY REGION

Selahattin ÇINAR | Abdıkerim ABDULLAYEV

This research was carried out in 2018 in order to determine the hay yields, forage qualities botanical compositions and range conditions of 5 different natural rangelands located at different altitudes the Chuy Region, Kyrgyzstan. In the rangelands, the ratio of plant coverage was 96.0-98.0%, the ratio of grasses, legumes, other plant families in the plant covered area was 24.5-48.1%, 4.7-24.0%, 36.2-63.8%, respectively. In the rangelands, the rate of decreaser, increaser and invader species was 37.0%, 7.3% and 55.7%, respectively. The average dry matter yield (DMY) of all five ranges was 2904 ...More

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MOLECULAR IDENTIFICATION OF COTTON WHITEFLY BEMISIA TABACI GENN. (HEMIPTERA: ALEYRODIDAE) POPULATIONS OF TURKEY BASED ON MITOCHONDRIAL CYTOCHROME OXIDASE SUBUNIT I

Hüseyin GÖÇMEN

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 ...More

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INSECTICIDE RESISTANCE IN Bemisia tabaci (GENN.) POPULATIONS COLLECTED FROM THE MEDITERRANEAN AND AEGEAN REGIONS OF TURKEY

Hüseyin GÖÇMEN

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 ...More

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