2014 Cilt 8 Sayı 22

Permanent URI for this collectionhttps://hdl.handle.net/11452/17007

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Assessment of some pollution parameters with geographic information system (GIS) in sediment samples of Lake Uluabat, Turkey
(Uludağ Üniversitesi, 2014-04-08) İleri, Saadet; Karaer, Feza; Katip, Aslıhan; Onur, S. Sonay; Aksoy, Ertuğrul; Ziraat Fakültesi; Toprak Bölümü
The scope of work is to determine the quality of the lake Uluabat sediment. pH, electrical conductivity (EC), orthophosphate phosphorus (PO4-P), total phosphorus (TP), ammonium nitrogen (NH4-N), nitrate nitrogen (NO3-N), total nitrogen (TN), organic matter, and water content were monitored from June 2008 to May 2009 monthly with the samples taken from 8 different stations in the lake. Additionally sediment quality parameters were mapped to the ArcGIS 9.1 software and distribution of pollution were visualized with pollution distribution maps. As a result, in the stations 1., 5., 7., 8. have been found to be more intense pollution load when these maps were examined.
Biopriming of salvia officinalis seed with growth promoting rhizobacteria affects invigoration and germination indices
(Uludağ Üniversitesi, 2014-05-11) Ghorbanpour, Mansour; Hatami, Mehrnaz
Plant growth promoting rhizobacteria (PGPRs) are a group of bacteria that can actively colonize plant roots and can modulate plant growth. The present study was aimed to investigate the effects of three PGPRs strains designated as Pseudomonas fluorescens (PF23) and P. putida (PP-41 and PP-159) on seed germination features including germination percentage (GP), mean time germination (MTG), germination rate (GR), root and shoot length and seedling vigor index (VI) of Salvia officinalis L. The bacterial suspension (109 CFU/ml) was used to inoculate the seeds under aseptic conditions. Results revealed that seed treatment of S. officinalis with rhizobacteria including PF-23, PP-41and PP-159 affects differently germination parameters. The maximum (78.5%) and minimum (16.75%) final GP were recorded in PP-41 and PF-23 treatment, respectively. Also, the highest GR, root and shoot length, seedling VI and the lowest MTG were recorded in seeds treated with PP-41, a strain with ability to produce moderate auxin, when compared to the other treatments. It is concluded that net effect of plant–rhizobacteria interactions on seed germination behaviors could be positive, neutral or negative. On the other hand, different strains of rhizobacteria had variable effects i.e., positive, negative and inconsequential effects of PGPRs application were observed on seed germination, root elongation and subsequently seedling VI. As a conclusion, the role of biopriming with PGPRs on germination characteristics and seedling growth varied with bacteria strains.
Development and performance evaluation of a combined infrared and hot air dryer
(Uludağ Üniversitesi, 2014-04-08) Sadin, Rasool; Chegini, Gholam-Reza; Khodadadi, Mehdi
In this study, a laboratory scale infrared and hot air dryer was developed in which some parameters such as the temperature of drying chamber, input air temperature, air flow rate and distance from the infrared source was adjustable by operator. Drying of tomato thin layers was performed under various combinations of these parameters. Experimental results showed that drying time for temperatures of 60, 70 and 80 °C was 60, 75 and 116 minutes, respectively. Drying is directly related to the amount of operational infrared power. Moreover, drying time for two air velocities of 0.6 and 1.1 m s-1 was 109 and 95 minutes, respectively. Increasing the drying air velocity leaded to reduction of drying time because of an increasing in evaporation rate of moisture from the surface of the product at low speeds. Results showed that by increasing the distance of drying chamber from the infrared source, drying time will increase due to reduction of heat that transferred to the product. Minimum and maximum drying times were belonging to the temperatures of 80 and 60 °C, respectively. Also, the drying rate was directly related to the velocity and temperature of input air.
Diallel cross study for estimating genetic components underlying wheat grain yield
(Uludağ Üniversitesi, 2014-05-11) Kohan, Mahdiyeh Zare; Heidari, Bahram
In order to analysis genetic control of grain yield, five cultivars and their F2 diallel crosses were sown in two locations of Shiraz and Zarghan, Iran. The traits of interest were number of grains per spike (GN), weight of grains per spike (GW), number of spikelet per spike (SN), spike length (SL), 1000-grain weight (TGW) and grain yield per plant (GY). The significant variances due to general (GCA) and specific (SCA) combining abilities indicated that both additive and non-additive components were involved in genetic control of traits. The GCA × location was only significant for GW. The Baker ratio implied the higher importance of additive variances. Graphical analysis of Hayman showed that gene action for all the traits was of partial dominance type. The environmental sensitivity analysis indicated heterogeneity among cultivars and their progenies for GW and that except Marvdasht, most of cultivars were relatively sensitive to the environmental conditions. The SCAs revealed that selection among progenies of Crossadl × Darab2 cross would be efficient for increasing GY. The GCA estimates revealed that the cultivars Cross adl and Marvdasht for GY, Cross adl and Shiraz for SN and SL and Cross adl for all traits were the best combiners.
Effect of gibberellic acid and potassium nitrate spray on vegetative growth and reproductive characteristics of tomato
(Uludağ Üniversitesi, 2014-01-19) Kazemi, Mohsen
A study was carried out to investigate the effect of 2 levels of gibberellic acid (10-4 and 10-8 ) and 2 levels of potassium nitrate (6 and 8 mM) spray on the growth, leaf-NPK content, yield and quality parameters of tomato. The application of gibberellic acid and potassium alone or in combination increased plant height, number of branches, number flowers per cluster, number fruits per cluster and faster fruit growth in addition to increasing fruit number, fruit firmness, weight and yield. The chlorophyll content, leafNPK content, blossom end rot and nitrate reductase activity were not affected by application of GA3 alone or in combination, but K application alone significant decreased blossom end rot while increasing leaf-NPK content, chlorophyll content and nitrate reductase activity. With regard to fruit quality, the application of GA3 at 10-8 mM, 8 mM potassium nitrate and 10-8 mM GA3+ 8 mM potassium nitrate increased fruit lycopene content, total soluble solids, vitamin C and titratable acidity compared with the control treatment. From this study, it can be concluded that spraying with gibberellic acid and potassium alone or in combination increased vegetative growth and reproductive characteristics of tomato.
Effects of a combination of dietary organic acid blend and oregano essential oil (lunacompacid® herbex dry) on the performance and clostridium perfringens proliferation in the ileum of broiler chickens
(Uludağ Üniversitesi, 2014-06-24) Çelikbilek, Arzu; Deniz, Gülay; Orman, Abdulkadir; Gençoglu, Hıdır; Kara, Çagdaş; Veteriner Fakültesi
The aim of the study was to determine the effects of dietary organic acid blend (OAB) and oregano essential oil (OEO) combination (Lunacompacid® Herbex Dry) on the performance and Cp count in the ileum of broiler chickens, and establish connections between performance and Cp proliferation. A total of 200 one day-old Avian Farm male broiler chicks were randomly divided into 2 equal groups (not supplemented control and birds receiving dietary addition of Lunacompacid® Herbex Dry (2g/kg of food) for 6 weeks. Body weights, body weight gains, food intake and food efficiency were weekly evaluated in the present study. Hot carcass weight and yield, and the ileum Ph and Cp count in the ileum content of broiler chickens were determined at the end of the experiment. In the present study, the combination of dietary OAB and OEO significantly decreased ileum pH (P<0.05) and Cp count (P<0.001) in the ileum content, but did not influence growth and carcass performance of broiler chickens. It was concluded that the lack of significant effects on broiler performance could be related to ideal rearing condition of our experiment. It is possible that the use of OAB and OEO combination in diets of broiler housed under suboptimal conditions may keep down Cp proliferation in the chicken gut and therefore may improve performance in this way.
Nano-anatase TiO2 modulates the germination behavior and seedling vigority of some commercially important medicinal and aromatic plants
(Uludağ Üniversitesi, 2014-05-11) Hatami, Mehrnaz; Ghorbanpour, Mansour; Salehiarjomand, Hossein
Nanoparticles have been applied worldwide, posing substantial effects on the environment and its living organisms. Plants as sessile organisms are always exposed to considerable fluctuations of nanoparticles concentrations. In this research, the influence of different concentrations (0, 10, 20, 40 and 80 mg.L-1 ) of nanosized TiO2 were studied on seed germination parameters including germination percentage (GP %), mean time germination (MTG), germination rate (GR), germination index (GI) and seedling vigor index (SVI) of five different medicinal plant species namely Salvia mirzayanii, Alyssum homolocarpum, Sinapis alba, Carum copticum, Nigella sativa. Results indicated that significant differences in examined traits were found among the plant species and also among the employed TiO2 concentrations. Among the plant species, the highest GR (87%) was observed in S. alba seeds at the 20 mg.L-1 TiO2 concentration, however, in S. mirzayanii plants it was obtained at 80 mg.L-1 TiO2. The lowest MTG (1.55 day) was observed in A. homolocarpum seeds at 10 mg.L-1 TiO2 concentration. Moreover, the highest SVI (102.6) was observed in the 20 mg.L-1 of the reference treatment for S. alba seeds. In N. sativa seeds, the highest GI value (9.29) was found at the anatase concentration of 20 mg.L-1 . In conclusion, application of TiO2 stimulated the seed germination of all species. However, this response was dependent on the concentration of applied TiO2 and plant species as well.

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