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Karagoz K.,Ataturk University | Ates F.,Manisa Viticulture Research Institute | Karagoz H.,Ataturk University | Kotan R.,Ataturk University | Cakmakci R.,Ataturk University
European Journal of Soil Biology | Year: 2012

The purpose of this study was to investigate the diversity of cultivable N2-fixing, P-solubilising and siderophores-producing bacteria originated from acidic and alkaline rhizospheric soil of native grapevine grown at three locations. Ninety-five dominant, morphologically distinct rhizobacteria were purified, which belonged to 27 genera and 44 species. Gram-negative bacteria were dominating in the grapevine environment. Bacillus spp. and Pseudomonas spp. were common at both the acidic and alkaline soils. Among different groups, Gammaproteobacteria, Firmicutes and Actinobacteria comprised the largest groups contributing to about 42.1, 33.7 and 9.5% of the total N2-fixing isolates, respectively. The cultivated bacterial community from rhizosphere of native grapevine represented 27 different known bacterial genera represented by Pseudomonas, Bacillus, Brevibacillus, Stenotrophomonas, and Paenibacillus as as the predominant genera. Of the 95 nitrogen fixing isolates, 12 were able to fixe nitrogen and solubilize phosphates, 12 were able to fixe nitrogen and produce siderophores, only five isolates were able to fix nitrogen, produce siderophores and solubilize phosphates at the same time. In addition, the majority of the isolates were able to grow under high NaCl concentration. Our result showed that different geographical locations, soil pH, and vegetation type in the investigated sites resulted in the different bacterial population and bacterial type. © 2012 Elsevier Masson SAS. Source


Cangi R.,Gaziosmanpasa University | Yagci A.,Gaziosmanpasa University | Akgul S.,Manisa Viticulture Research Institute | Kesgin M.,Manisa Viticulture Research Institute | Yanar Y.,Gaziosmanpasa University
African Journal of Biotechnology | Year: 2011

To delay the harvest of Sultani Cekirdeksiz grape variety and to reduce pre and post-harvest botrytis bunch rot severity, shading and covering material application were tested in 2009 to 2010 growing periods. In this study, grape vines were shaded with shading materials which had three different shading densities (35, 55, and 75% shading density) from veraison period to harvest. The grape vines were also covered with four different covering materials (transparent polyethylene, mogul, polypropen cross-stich and lifepack) before rainfall, at the end of August until harvest. The gray mold severity was recorded three times (before shading at unriped grape stage, veraison period, shortly after shading and twice at 20 day interval) during growing period. Based on the results of this study, the highest gray mold (Botrytis cinerea) severity was obtained in the control (uncovered and unshaded) treatment and the lowest disease severity was observed in lifepack treatment with or without shading. Since gray mold disease of grape was the main factor affecting harvest date of the crop lifepack, + 35 or 55% shading could be recommended to delay harvest and reduce the gray mold severity of grape in Manisa province-Turkey. © 2011 Academic Journals. Source


Ates F.,Manisa Viticulture Research Institute | Ates F.,Celal Bayar University | Ates F.,Selcuk University | Coban H.,Manisa Viticulture Research Institute | And 8 more authors.
Bulgarian Journal of Agricultural Science | Year: 2011

Ten grapevine cultivars (Vitis vinifera L.) were characterized according to the international grape descriptor lists. The morphology of various vine organs of some autochthonous and hybrid cultivars was described at several phenological stages, and pomologycal characteristics were determined during growth cycle. With respect to the ampelographic characters, great differences were observed among the studied cultivars. The relationships between the cultivars were further assessed via UPGMA dendrogram analysis. Certain characteristics were anticipated to play particular role in the constitution of the ampelographic dendrogram. Particular data observed in this study on some autochthonous grapevine cultivars would help to prevent disappearing local cultivars and to preserve germplasm collection. Source

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