ADKG2008 - Namık Kemal Üniversitesi

PAV and the Cereal yellow dwarf virus-RPV in canary seed (Phalariscanariensis L.). Cereal Research Communications, 36 (2), 225-2347.4.2. Diğer Uluslar Arası Atıf Dizinlerinde Yer Alan Yayın Listesi-7.4.3. Yurtiçi Yayın Listesi-7.4.4. 2007- 2008 Yılında Uluslar Arası Dergilerde Yapılmış Olan BilimselYayın Listesi2008 yılı SCI Yayın ListesiAysal, T. and M. Kıvan, 2008. Development and population growth of Stephanitispyri (F.) (Heteroptera: Tingidae) at five temperatures. Journal of Pest Science81(3): 135-141. (Research Asist. Aysal, T and Prof. Dr. Kıvan M. Namık Kemal University, Faculty ofAgriculture, Department of Plant Protection, Tekirdag-Turkey) Abstratct: Pear lace bug, Stephanitis pyri (F.)(Heteroptera: Tingidae) is a pest of apple and pear trees and ornamental Rosaceae plants in Mediterraneancountries and palearctic region. The aim of this study is to determine the effects of temperatures on S. pyri inthe laboratory. Development and fecundity of S. pyri reared on apple leaves (Pyrus malus L.) wereinvestigated at five constant temperatures (20, 23, 26, 29 and 32 +/- 1 degrees C) and a 16L:8D photoperiod.Longevity was determined to be 12.6 days at 32 degrees C and 58.7 days at 20 degrees C for females, and9.7 and 37.7 days for males. Females laid 186.9 eggs per female with the highest number achieved during28.5 days of oviposition period at 26 degrees C. Female lifetime fecundity was reduced at 32 degrees C (40.0eggs per female). While the net reproductive rate (R-0) was highest at 26 degrees C, the intrinsic rate ofnatural increase (r(m)) was highest at both 26 and 32 degrees C. The mean generation time (G) wasestimated to be 27.2-78.4 days at 20 and 32 degrees C, respectively. The longest development times for eggand total nymph stages were obtained as 22.0 and 24.9 days, respectively, at 20 degrees C. S. pyri developedfastest from egg to egg in 24.3 days at 32 degrees C. The lower developmental threshold (T-0) was 9.7degrees C and the thermal constant (K) was 517.3 degree-days for S. pyri. Thus, S. pyri is calculated to have3.8 theoretical generations in Tekirdag. The optimum developmental temperature for S. pyri was 26 degreesC.Coşkuntuna A, Özer N., 2008. Biological control of onion basal rot disease usingTrichoderma harzianum and induction of antifungal compounds in onion setfollowing seed treatment. Crop Protection 27: 330-336 (Asist. Prof.Dr. A. Coskuntuna,and Prof.Dr. N. Ozer. Namık Kemal University, Faculty of Agriculture, Department of Plant Protection,Tekirdağ-Turkey.) Abstract: Trichoderma harzianum KUEN 1585 (commercial product, Sim(R)Derma) wastested to determine its effect on the mycelial growth of Fusarium oxysporum f.sp. cepae (FOC) in dual cultureand its control of basal rot disease in pot- and field-grown onion sets. The abilities of T harzianum to inducethe production of antifungal compounds in sets and to increase onion set diameter were also studied. In potexperiments, where the soil was inoculated with a pathogenic isolate of FOC, seeds were coated with Tharzianum at the dosage of 10 g kg(-1) seed. In field experiments, seeds coated with T harzianum were sownin soil naturally infested with the pathogen. T harzianum inhibited mycelial growth of the pathogen in vitro.Seed treatment with T harzianum decreased disease incidence comparable to the imidazole fungicide,prochloraz in both pot and field experiments. It also enhanced bulb diameter of sets, especially in the potexperiment. Extracts from onion sets grown from treated seeds under both conditions were fractionated bythin-layer chromatography for their antifungal compounds. Most of the fractions obtained from the sets of Tharzianum-treated seeds showed high antifungal activity against the pathogen. This study suggests thepossible role of T harzianum in the induction of antifungal compounds against F. oxysporum f. sp. cepae inonion sets. (C) 2007 Elsevier Ltd. All rights reserved.32