2015 Cilt 9 Sayı 26

Permanent URI for this collectionhttps://hdl.handle.net/11452/31801

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Regeneration of two sweet cherry cultivars cvs. "bing" and "dovomras" in vitro
(Uludağ Üniversitesi, 2015-10-08) Zamanipour, Mahbube; Tehranifar, Ali; Moghadam, Ebrahim Ganji; Abedi, Bahram
In this article we will present the main aspects regarding the behavior of two Sweet cherry cultivars in the process of meristem culture in vitro. The effect of three growth media including WPM, MS and QL and three different hormone combinations contains BAP (0, 1 and 2 mgL-1 ), 0.5 GA3 and 0.1 IBA were investigated on the multiplication of two Sweet cherry cultivars "Bing" and "Dovomras". Cultures were maintained at 26°C under a 16 hr-light/8 hr-dark with a light intensity of 2000-3000 lux from white fluorescent light. After six weeks, the number and length of new shoots, plantlets quality and leaf number were recorded. This experiment was arranged in a completely randomized designed. The result showed that there were significant differences between cultivars for the number and the length of shoots. Also there was negative relationship between shoot number and length. The highest average new number (5.66) of shoot multiplication and Plantlets quality was obtained in WPM supplemented with 2 mgL-1 BAP in "Bing" cultivar and the highest average length of shoots (2.23 cm) and leaf number induced when was cultured on MS media obtained with 1 mgL-1 BAP in "Dovomras" cultivar. In general, Plantlets had better quality on the WPM medium in comparison with other media. The results showed that Sweet cherry was more stable and had a higher regeneration in micropropagation process based on morphological traits.
Water stress and plant within row spacing effects on safflower yield in competition with wild oat
(Uludağ Üniversitesi, 2015-10-08) Naderi, Ruhollah; Kazemeini, Seyed Abdolreza; Noroozi, Majid
A Two-year field experiment was carried out in 2009 and 2010 at Agricultural College of Shiraz University, Iran to evaluate the effects of different water stress and plant within row spacing on safflower yield and photosynthetic characteristics in weedy conditions. Results showed that drought stress at 75 % FC (field capacity) caused a reduction of 15 % in seed yield but this treatment had no significant difference with well watered. Yield reduction of 31 % was also observed at 50 % FC. The greatest seed yield was also found at plant within row spacing of 5 cm (302.6 ±23 kg m-2 ). The yield reduction caused by weed competition was 57%. Compared to well water, at 75 % FC and 50 % FC Photosynthesis rate of safflower reduced 26.18 and 65.49 %, respectively. Weeds competition reduced safflower photosynthesis rate significantly about 25 %. Transpiration in weedy plots was also significantly lower than that of weed free plots (33%). Compared to well-watered, water stress at 75 % and 50 % FC reduced wild oat biomass by 29 % and 43 %, respectively. Increasing within row spacing from 5 cm to 10 cm and 20 cm caused an increase in wild oat biomass by 30% and 40%, respectively.
Life table and survivorship of a short horned grasshopper exposed to arsenic compound under laboratory conditions
(Uludağ Üniversitesi, 2015-11-30) Nath, Susanta; Roy, Barnali
Spathosternum prasiniferum prasiniferum (Walker, 1871), a common short horned grasshopper considered as pest of paddy, mungbean, urd bean, chick bean in India. They were acclimatized in bisexual pairs under laboratory conditions and exposed to various doses of sodium arsenate such as 0.0125mg.l-1 , 0.025 mg.l-1 , 0.050 mg.l-1 , 0.10 mg.l-1 , 0.20 mg.l-1 with the aim to find out survivorship, mortality and life expectancy. Sodium arsenate created the variation in their life cycle as well as life span of the insect compared to the control. A convex shaped survivorship curve of both male and female revealed a high mortality in older adult. A sizeable increment in the number of individual presented in the biplot of both male and female grasshopper advocated its ability to use the arsenic efficiently. After slight depression in 0.025 mg.l-1 , rapid recoveries signify the insect ability to overcome the initial stress situation and successfully maintained the life cycle with the advancement of doses.
Optimization of phytase production by new isolate bacillus sp. EBD 9-1 strain using statistical experimental design
(Uludağ Üniversitesi, 2015-10-08) Murat, Dilek; Demirkan, Elif; Sevgi, Tuba; Baygın, Eren; İktisadi ve İdari Bilimler Fakültesi; Biyoloji Bölümü
In this study, face centered central composite design (FCCCD) of response surface methodology (RSM) was applied to describe the relationship between the tested variables, pH, temperature, rpm, incubation period and phytase production by novel isolate Bacillus sp. EBD 9-1. The design was employed by selecting pH, temperature, rpm and incubation period as the model factors and to achieve maximum yield, interaction of these factors was studied by RSM. A second order quadratic model and response surface method showed that the optimum conditions for phytase production were pH, 8.0; temperature, 38.13°C; rpm, 113.64 and incubation period, 45 h. Under these conditions, phytase activity was found to be about 228 Uml-1.
Evaluation of drought tolerance in some kentucky bluegrass (Poa pratensis) cultivars
(Uludağ Üniversitesi, 2015-10-08) Sadeghi, Leila; Arab, Mostafa; Etemadi, Nematollah; Yazdani, Navid
Drought stress is a major factor limiting the growth of turfgrasses and it has become a problem for turf management, as water availability for irrigation in urban areas is declining. Finding drought-tolerant turfgrasses will facilitate turf management for areas with limited water. This study was conducted to determine the morphological and physiological responses of five Kentucky bluegrass cultivars to drought stress. Treated cultivars were ‘Nutop’, ‘Merion’, ‘Georgetown’, ‘Crusade’ and ‘Barcelona’. A split-split design based on the completely randomized block in three replications was considered. Treatments were irrigated after 30, 50, 70, 90, 110, and 130 millimeter evaporation from class A pan. Drought stresses significantly reduced turf quality, relative water content (RWC), shoot lengths, shoot and root dry weights and number of days to complete leaf wilting, but increased electrolyte leakage (EL) and number of days to recover complete green canopy after re-watering. Under drought stress, ‘Nutop’ had higher RWC, shoot dry and fresh weights and shoot lengths than other cultivars. ‘Merion’ had faster recovery from drought stress and higher root weight. Overall, among five cultivars, ‘Nutop’ and ‘Georgetown’ were least and most affected by drought stress, respectively.
Effects of replacing corn grain by reconstituted or un-reconstituted sorghum grain on blood biochemical parameters in Japanese quails
(Uludağ Üniversitesi, 2015-10-08) Emami, Fayyaz; Sis, Naser Maheri; Vahdatpour, Tohid; Ghorbani, Abolfazl
Current study was carried out to evaluate effects of replacing un-reconstituted or reconstituted sorghum grain with corn grain on blood constituents in Japanese quail (Coturnix coturnix japonica). Seven hundred day-old unsexed quail chicks were fed basal diet and raised in cage system for 20 day. At day 21 quails were sexed and 300 male chicks reared for 21 day experimental period (21-42). Experimental birds were divided into 5 treatment groups (4 replicates contain 15 birds per pen). Experimental treatments were: (A) diet contains corn grain and without sorghum (control), (B) replacing 50% reconstituted sorghum, (C) replacing 50% unreconstituted sorghum, (D) replacing 100% reconstituted sorghum, and (E) replacing 100% un-reconstituted sorghum grain in place of corn grain, respectively. A 6-h prior the end of the study birds were deprived from food. Blood samples were taken and serum cholesterol, high density lipoprotein (HDL), low density lipoprotein (LDL), triglyceride, total protein, urea, uric acid and glucose levels evaluated by colorimetric method using auto analyzer. According to the results, there was a significant difference on serum triglyceride, urea, total protein and glucose between experimental groups compared to control group (P< 0.05). These results suggest that replacing reconstituted sorghum had better effects than un-reconstituted sorghum on blood constituents in Japanese quails.
Influence of glycerol supplementation to dairy and feedlot cattle diets on performance and health: A review
(Uludağ Üniversitesi, 2015-08-10) Meral, Yavuz; Kara, Çağdaş; Biricik, Hakan; Veteriner Fakültesi; Hayvan Besleme ve Beslenme Hastalıkları Ana Bilim Dalı
Increasing population and demand in nearly every sector led humankind to use energy efficiently in every production area. One of the recent “megatrends” worldwide is to supply energy from renewable sources. Rapid emerge of biodiesel industry in the world accompanied with increasing production of industry by-products. As a result of this, some of the industry by-products, such as glycerol, are started to become more available and feasible which is thought to have a promising potential for being a remarkable alternative to high-energy containing feed raw materials. Because of increasing prices of cereals all over the world and search for alternative feed materials by producers has encouraged animal nutrition scientist to determine the effects of this different commercially valued products on performance, metabolism and final product quality for cattle nutrition. Thus the aim of this review is to evaluate the potential of glycerol for feedlot and dairy cattle nutrition.

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