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Identification of Microbial Populations Present in Agricultural and Nonarable Soils in the Talas Valley, Northern Kyrgyzstan, in Autumn

Tinatin DOOLOTKELDİEVA | Saykal BOBUŞOVA | Mahabat KONURBAYEVA

Soil bacterial and fungal communities were investigated in relation to soil type and farm management practices after vegetation harvesting in autumn. Soils from fields cultivated with Phaseolus vulgaris (bean) and Pyrus comminus (pear) and nonarable, natural areas were studied. Microbial diversity was analysed using cultivation-dependent methods (isolation of pure cultures) and cultivation-independent methods (direct extraction of DNA from soil, followed by PCR amplification of the 16S rRNA and 18S rRNA genes). The use of cultivation-dependent methods revealed that there were no differences in ...Более

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Sensitivity of Fusarium oxysporum f. sp. melongenae, the causal agent of Fusarium wilt of eggplant to some ammonium, potassium, and sodium compounds in vitro and in vivo bioassays

İsmail ERPER

This study evaluated the efficacy of various salts against Fusarium oxysporum f. sp. melongenae (Fomg) in vitro and in vivo bioassays. Ammonium bicarbonate/carbonate, potassium benzoate/sorbate, sodium benzoate/carbonate/metabisulphite at 2.0 entirely halted mycelial growth and spore germination of the fungus. Considering the EC50, minimum inhibitory concentration, and minimum fungicidal concentration values of the salts, sodium metabisulphite was more toxic to the fungus. In soil bioassays, at 0.4 and 0.6, sodium metabisulphite and potassium sorbate reduced the mycelial growth of the fungus b ...Более

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The Improving Conditions for the Aerobic Bacteria Performing the Degradation of Obsolete Pesticides in Polluted Soils

Tinatin DOOLOTKELDİEVA | Saykal BOBUŞOVA | Mahabat KONURBAYEVA

Currently, in the territory of Kyrgyzstan, 50 storage facilities of obsolete pesticides exist; they store about 5000 tons of these hazardous chemicals. The storage conditions have become unusable for a long time. They pose a serious threat to the people living there, livestock, and the environment. The main purpose of this research was the use of selected bacteria with cytochrome P450 genes for the bioremediation of polluted soils around the burial sites in model soil experiments. In the first trial of biodegradation experiments, one contaminated soil was used without any changes in chemical c ...Более

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Genetic Relationships and Population Structure of Central Asian Apple Species collected from Different Parts of Kyrgyzstan

Abdıkerim ABDULLAYEV

Apple is among the most widely grown fruit species worldwide. It is included in the genus Malus and there are several species of apple. Although a consensus is not available about the origin of domesticated apples, it is widely accepted that Malus sieversii, known as Central Asia wild apple, was the primary progenitor of apples. Central Asia is a quite significant origin center of apple and harbors different species and a great diversity. In this study, genetic relations among 79 apple materials belonging to 4 different species (M. domestica, M. sieversii, M. kirghisorum and M. niedzwetzkyana) ...Более

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