March 2011
Diversity between and within farmers’ varieties of tomato from Eritrea
Tomato yields in Eritrea are low (15 Mg/ha) compared with 19 Mg/ha in Africa and 27 Mg/ha worldwide. This is partly caused by poor quality of varieties used. This study analysed the diversity among and heterogeneity within farmers’ varieties of tomato from Eritrea and compared these varieties with other African and Italian varieties. Fifteen simple sequence repeat (SSR) markers were used for the genetic...
March 2011
Cytogenetic, genomic in situ hybridization (GISH) and agronomic characterization of alien addition lines derived from wheat-Psathyrostachys huashanica
Alien chromosome lines were developed and identified from the BC1F2 and BC1F3generations of a wheat-Psathyrostachys huashanica intergeneric cross. Their agronomic traits were evaluated in the field and their meiotic behaviors and chromosome composition were analyzed by cytogenetic and GISH (genomic in situhybridization) techniques. Five lines with 2n = 44 and one line with 2n = 46...
March 2011
Contribution of chloroplast DNA in the biodiversity of some Aegilops species
Four Aegilops species (Aegilops longissima, Aegilops speltoides, Aegilops searsiiand Aegilops caudata) belonging to the family Poaceae were used in this study. Nucleotides of 1651 bp from 5.8 S rRNA gene and the intergenic spacers trnT-trnL and trnL-trnF from the chloroplast DNA were combined together in order to investigate the genetic diversity among the earlier mentioned species....
March 2011
Effect of mowing and grazing on ramet emergence of Leymus racemosus in the inner Mongolia steppe during the spring regreening period
The invasive Leymus racemosus species is mainly established by ramets (or clonal seedling). A field experiment was conducted in the spring of 2004 to investigate the effects on the surface soil temperature caused by mowing, grazing and grazing exclusion, and the influence of these factors on the ramets emergence characteristics. The primary effect of the treatments was significant changes in soil...
March 2011
Screening bacterial species for antagonistic activities against the Sclerotinia sclerotiorum (Lib.) De Bary causal agent of cucumber white mold disease
In this study, 23 bacteria strains that belong to 19 bacterial species were tested against Sclerotinia sclerotiorum (Lib.) De Bary. In vivo and in vitro testing of bacterial strains showed that Serratia plymuthica strains IK-150 and IK-139,Burkholderia cepacia strain IK-16, Pseudomonas flourocens strain IK-3,Pseudomonas putida strain...
March 2011
Soil mineralized nutrients changes and soil conservation benefit evaluation on ‘green project grain’ in ecologically fragile areas in the south of Yulin city, Loess Plateau
The ‘green project grain’ was initiated to reduce water and wind erosion on marginal and highly erodible sloping croplands by removing them from permanent production planting and soil-conserving vegetation such as grassland/forest. We chose 53 plots of 265 sites in the ecologically fragile areas in the south of Yulin city in Loess Plateau, in order to assess the soil net mineralized nutrients...
March 2011
Photosynthetic induction in leaves of two cucumber genotypes differing in sensitivity to low-light stress
Low light is one of the most important stress factors affecting cucumber production in China greenhouse. Two cucumber genotypes (Cucumis sativus L.), Deltastar with low light-tolerance and Jinyan No. 2 with low light-sensitivity were used to study the response of gas exchange, chlorophyll fluorescence, stomatal opening and ribulose-1, 5-bisphosphate carboxylase/oxygenase (Rubisco) activity to low light...
March 2011
Response of sunflower hybrids to management practices under irrigated arid-environment
Two field experiments were established at Research Farm, Bahauddin Zakariya University, (BZU) Multan, Pakistan, during the spring season of 2009 to study the interactive effect of sunflower (Helianthus annuus L.) hybrids in terms of growth, fraction of intercepted radiation (Fi), intercepted photo-synthetically active radiation (PAR), yield components and oil contents to planting geometries and nitrogen...
March 2011
The crop water stress index (CWSI) for drip irrigated cotton in a semi-arid region of Turkey
This study was carried out to determine the crop water stress index (CWSI) for drip irrigated cotton grown on a heavy clay texture soil (Palexerollic Chromoxerert) under semi-arid climatic condition of East Mediterranean region for three years (2005 to 2007) in Adana, Turkey. Four irrigation treatments designated as full (I100) with no water stress and slight (DI70), moderate (DI50) and strong water...
March 2011
Effectiveness of liquid organic-nitrogen fertilizer in enhancing nutrients uptake and use efficiency in corn (Zea mays)
The ever increasing price of nitrogenous (N) fertilizers coupled with the deleteriouseffects of imbalanced N fertilizers on the environment necessitates theenhancement of N use efficiency of...
March 2011
Effect of salinity on cell growth and β-carotene production in Dunaliella sp. isolates from Urmia Lake in northwest of Iran
Urmia Lake, the second largest hyper-saline lake by area in the world, has fluctuated in salinity over time, but recently, it has reached a maximum of 360 g/l.Dunaliella is a type of halophile green-orange microalgae especially found in lake and salty fields and is known for its antioxidant activity; because of its ability to create large amount of carotenoids. In the present...
March 2011
Investigation of the ecotoxicologic effect of pesticide industry wastewater on the pancreas and liver of rats
In this study, when the raw wastewater, which resulted from the manufacturing of 2,4-dichlorophenoxyacetic acid (2,4-D) dimethylamine salt and 2,4-D acid isooctylester herbicides in the factory, was discharged to the ecosystem without treatment, its ecotoxic effect on the pancreas and liver of rats was investigated. In this research, 16 Wistar Albino race male rats were grouped into two (Group 1- control, n =...
March 2011
Screening the Egyptian desert actinomycetes as candidates for new antimicrobial compounds and identification of a new desert Streptomyces strain
In a screening program to study the antimicrobial activities of desert actinomycetes as potential producers of active metabolites, 75 actinomycete strains were isolated from the Egyptian desert habitats and tested. Out of the isolated 75 organisms, 32 (42.67%) showed activity against the used test organisms. The antimicrobial activities of the active desert actinomycete strains were classified into four...
March 2011
Infant formula as a substrate for bifidogenesis: An in vitro investigation
Six commercially available infant formulas (IF) without added prebiotic, were investigated as substrates for the growth of bifidobacteria isolated from the feces of 3 day old babies. This investigation tracked, during 48 h, the microbiological and biochemical changes in prepared infant formula meals, caused by the action of bifidobacteria, isolated from babies’ feces. Pancreatin digestion preceded...
March 2011
Studies on the analgesic and anti-inflammatory activities of Sargassum swartzii (Turner) C. Agardh (Phaeophyta) and Ulva reticulata Forsskal (Chlorophyta) in experiment animal models
The analgesic and anti-inflammatory effects of methanolic extracts of the brown seaweed Sargassum swartzii (Turner) C. Agardh (Phaeophyta) and green seaweedUlva reticulata Forsskal (Chlorophyta) were examined. S. swartzii and U. reticulataextracts at the dose of 500 mg/kg body weight showed analgesic effects in both acetic acid-induced writhing and hot plate-induced pain...
March 2011
In vitro evaluation of the interaction between methanol extract of lichen (Ramalina farinacea) and tetracycline against clinical isolates of Staphylococcus aureus
Antimicrobial interaction studies between methanol extract of lichen (Ramalina farinacea (I) ach. (Fam: Ramalinacea) and tetracycline, against clinical isolates ofStaphylococcus aureus was evaluated. Preliminary antimicrobial properties of the extract were evaluated. Antimicrobial interaction studies between the methanol extract of lichen in combination with tetracycline against strains...
March 2011
Vaccination with apoptosis colorectal cancer cell pulsed autologous dendritic cells in advanced colorectal cancer patients: Report from a clinical observation
To investigate vaccination with apoptosis colorectal cancer (CRC) cell pulsed autologous dendritic cells (DCs) in advanced CRC, 14 patients with advanced colorectal cancer (CRC) were enrolled and treated with DCs vaccine to assess toxicity, tolerability, immune and clinical responses to the vaccine. No severe toxicity was observed and the vaccine was well tolerated. The levels of...
March 2011
Studies on the immature stages and burrow excavating behavior of Schizodactylus monstrosus (Drury) (Grylloptera: Gryllodea: Schizodactylidae) from Sindh, Pakistan
The biology of nymphal stages and life habits of the Schizodactylus monstrosus(Drury) were investigated in this study that was carried out between 2004 and 2007 in the left bank of River Indus Sindh province. The study showed that S. monstrosuswhich is a nocturnal and voracious carnivorous insect, passed through 9 nymphal stages, took 1 year to complete its developmental period, though the...
March 2011
Nuclear maturation of immature bovine oocytes after vitrification using open pulled straw and cryotop methods
To date, at least two well known methods have been widely used for vitrification of oocytes and embryos at different stages in a variety of species. However, there is no reported data regarding the comparative effectiveness of these two methods for vitrification of immature bovine oocytes. The objective of this study is to compare the nuclear maturation of immature bovine oocytes vitrified using open pulled...
March 2011
Metabolic flux distribution and mathematical models for dynamic simulation of carbon metabolism in Escherichia coli
A simple model was build for the metabolic flux determination based on published articles. A method for metabolic flux determination by carbon labeling experiments was described and developed here in the first part of this study that allows mathematical description relating the measured quantities and the intracellular fluxes. The described method was used to investigate the central carbon metabolism...
March 2011
Two novel missense mutations in bovine ATGL gene and their association with economic traits in Qinchuan cattle
Adipose triglyceride lipase (ATGL) as a triglyceride-specific lipase, plays a key role in the triglyceride liposis mobilization of fat tissue. In this study, based on the pyrosequencing technology, two novel missense mutations were identified, which were 3289 G>C in exon 6 bringing E277Q and 3514 A>T in exon 7 bringing T320S, respectively. The 3289 G>C mutation had significant effect on backfat...
March 2011
Interspecies embryo reconstruction in Tibetan antelope Pantholops hodgsonii by handmade cloning
Interspecies somatic cell nuclear transfer (iSCNT) offers the possibility of preserving endangered species. Handmade cloning (HMC) has proved to be an efficient alternative to the traditional micromanipulator-based technique in some domestic animal species. This study investigates the possibility of reconstructing the embryos of Tibetan antelope Pantholops hodgsoni by HMC and reports the development...
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