Yazar "Göre, M. Erhan" seçeneğine göre listele

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  • Küçük Resim
    Öğe
    Biological control of cotton seedling diseases by fluorescent pseudomonas spp
    (2016) Erdoğan, Oktay; Bölek, Yüksel; Göre, M. Erhan
    Seedling root rot seen in many plants including cotton is an important disease that leads to large economic losses. Human health and the environment are negatively affected as a result of using fungicides for disease control. The goal of this study was to determine the effects of fluorescent Pseudomonas (FP) bacteria against seedling root rot pathogens both in vitro and in vivo conditions. 59 FP isolates obtained from the rhizosphere of cotton and weeds on the field were tested by dual-culture assays in vitro. After applying effective FP isolates on the seeds, antagonistic effects against the seedling root rot pathogens were investigated in a climate chamber. Resulting of dual-culture tests, FP40 had maximum effect (49.60%) against Rhizoctonia solani. Besides, FP51, FP48 and FP35 had highest impact as 43.80%, 43.50%, and 43.10% against Fusarium sp., respectively. Pythium deliense was mostly effected by FP57 (59.80%), FP52 (57.80%) and FP56 (57.60%). While isolates FP35 and FP57 provided protection over 70% against all three pathogens in a climate chamber, they were as effective as commercial fungicides (Vitavax and Maxim) and biofungicide (Subtilex) and shown promising results.
  • Küçük Resim
    Öğe
    The determination of relationship between Verticillium wilt (Verticillium dahliae kleb.) and early maturity in cotton (Gossypium hirsutum L.)
    (2013) Erdoğan, Oktay; Özbek, Nedim; Ünay, Aydın; Göre, M. Erhan
    The present study was conducted to investigate the relationship between earliness of crop maturity and Verticillium wilt. Ten cotton genotypes were evaluated in natural infection under field conditions of Nazilli Cotton Reseach Institute in 2006 and 2007. Foliar disease index (FDI), vascular disease index (VDI), days to flowering (DF), days to boll opening (DB) and seed cotton yield (SCY) were determined. In regard to FDI and VDI, the most tolerant genotypes were Carmen (standard cotton cultivar), NGC, GSN 12 and M25-G, while the most sensitive genotype was NP Ozbek-100. NMCH-11/4, NCCH-9/2 and NCCH-8/1 were other sensitive genotypes. The performances to verticillium wilt of other standard cotton cultivars, Nazilli 84 S and Sayar 314 were non-stabile. The maturity characteristics, DF and DB, were significant negative correlated with all Verticillium severity parameters, whereas these characteristics were significant positive correlated with SCY. Carmen cultivar should be recommended for infected areas and improving diseases tolerance in cotton breeding programs