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Articles by Erdal Kaya
Total Records ( 3 ) for Erdal Kaya
  Meral Aslay , Mehtap Teken , Kemal Cukadar , Hakan M. Unlu , Zakyne Kadiodlu and Erdal Kaya
  About Ninteen populations of Tchihatchewia isatidea Boiss. (Brassicaceae) were collected from the Eastern Anatolia Region of Turkey. By applying generative and vegetative propagation techniques the most suitable production technique was determined for the species. Germination tests were performed and different storage conditions were specified at different temperatures in germination cabinets under laboratory conditions. The optimum germination temperature, germination rate, mean germination time (day) and mean germination performance were determined. Adaptation capabilities and some selection criteria of populations were identified. The 2 years production period was reduced to 1 year and Tchihatchewia isatidea Boiss has been identified as a candidate species of ornamental plants.
  Ilkay Orhan , Betul Demirci , Iman Omar , Huma Siddiqui , Erdal Kaya , M. Iqbal Choudhary , Gulay Ecevit-GenC , Neriman ozhatay , Bilge Sener and K. Husnu Can Baser
  Essential oil compositions and antioxidant potentials of fourteen ethanol (75%) root extracts prepared from twelve taxa of the genus Paeonia (Paeoniaceae), including P. arietina Anders., P. daurica Andrews, P. xkayae N. Özhatay, P. kesrouanensis Thiéb., P. mascula (L.) Miller subsp. arasicola G. Kaynak, ö. Yilmaz & R. Daşkin, P. mascula (L.) Miller subsp. bodurii N. Özhatay, P. cf. mascula L. (Mill.) subsp. mascula (two samples from central and northeastern Anatolia), P. cf. officinalis Retz., P. peregrina Miller (two samples from western and northwestern Anatolia), P. tenuifolia L., P. turcica Davis & Cullen, and P. wittmanniana Hartwiss ex Lindl. were assessed. The chromosome numbers of the root tips of the species were examined using chromosome staining technique with Shiff’s reagent under Leitz microscope. The essential oils of the roots of the Paeonia species were analyzed by gas chromatography (GC) and gas chromatography-mass spectrometry (GC-MS) and the major components were identified as salicylaldehyde (10%–94.4%), cis-myrtanal (5.5%–59.7%), and methyl salicylate (2%–52.2%). Antioxidant potentials were tested against 1,1-diphenyl-2-picrylhydrazyl (DPPH) and nitric oxide (NO) radicals using propyl gallate and rutin as the references. Total phenolic contents of the ethanol extracts were determined using Folin-Ciocalteau’s method. The extracts exerted moderate NO scavenger effect and displayed insignificant DPPH radical scavenger activity at 500 μg mL−1. On the other hand, P. daurica, P. tenuifolia and P. cf. mascula subsp. mascula are diploids with 2n=10, while other nine taxa are tetraploids with 2n = 20.
  Arif Atak and Erdal Kaya
  Turkish flora has approximately 12,000 plant taxons and 35% of them are known to be endemic. The herbaceous and woody forms of peony plants have been commonly used as ornamental plants and for medical purposes, especially in the far East, for many years. Herbaceous species with 12 taxons including 55 populations have been detected and collected from Turkey’s flora since 2000. Then breeding programs started with interspecific crosses and some new hybrids were obtained. To achieve targeted results it is especially important to distinguish between the resulting herbaceous or woody structures of individuals. Therefore, the selected 10 SRAP primers were used to separate some woody and herbaceous peony hybrids and also standard peony cultivars from each other. Successful results were obtained with these SCAR primers. As a result of interspecific crosses the obtained herbaceous or tree structure of individuals that were most reliable, especially Me2+Em1 and Me8+Em2 primer pair combinations were derived from testing. Thus, they are the first hybrid plants with leaves and undesirable characteristics can be determined in those forms to be eliminated. Thus, targeted results have been obtained in a much shorter time while the ratio of peony breeding success has increased.
 
 
 
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